The title complex,
catena-poly[[[(2,2'-bipyridine-1
2N,
N')tris(methanol-2
O)(nitrato-2
2O,
O')-
-cyanido-1:2
C:
N-cyanido-1
C-iron(II)neodymium(III)]-di-
-cyanido-1:2'
C:
N;2:1'
N:
C] methanol solvate], {[Fe
IINd
III(CN)
4(NO
3)(C
10H
8N
2)(CH
3OH)
3]·CH
3OH}
n, is made up of ladder-like one-dimensional chains oriented along the
c axis. Each ladder consists of two strands based on alternating Fe
II and Nd
III centers connected by cyanide bridges. Furthermore, two such parallel chains are connected by additional cyanide cross-pieces (the `rungs' of the ladder), which likewise connect Fe
II and Nd
III centers, such that each [Fe(CN)
4(bipy)]
2- unit (bipy is 2,2'-bipyridine) coordinates with three Nd
III centers and each Nd
III center connects with three different [Fe(CN)
4(bipy)]
2- units. In the complex, the iron(II) cation is six-coordinated with a distorted octahedral geometry and the neodymium(III) cation is eight-coordinated with a distorted dodecahedral environment.
Supporting information
CCDC reference: 735101
Red–brown prismatic crystals of (I) were obtained by slow diffusion of a
methanol solution of K2[Fe(bipy)(CN)4].3H2O (0.1 mmol) and an aqueous
solution of Nd(NO3)3.6H2O (0.1 mmol) through an H-tube at room
temperature. The resulting crystals were suitable for single-crystal X-ray
diffraction analysis. The product is insoluble in water and methanol.
H atoms attached to C atoms of the bipy ligand were placed in calculated
positions (C—H = 0.96 Å) and refined using a
riding model, with Uiso(H) = 1.2Ueq(C). The methyl H atoms of
the methanol molecules were placed geometrically (C—H = 0.93 Å) and refined
as riding, with Uiso(H) = 1.5Ueq(C). The hydroxy H atoms of
the
methanol molecules were located in a difference Fourier map and refined as
riding, with O—H restraints (0.97 Å for O1—H, 0.93 Å for O2—H
and
O3—H and 0.96 Å for O7—H), and with Uiso(H) =
1.2Ueq(O) for O1, O2 and O3, and 1.5Ueq(O)
for O7.
Data collection: SMART (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
catena-poly[[[(2,2'-bipyridine-1
κ2N,
N')tris(methanol-
2
κO)(nitrato-2
κ2O,
O')-µ-cyanido-
1:2
C:
N-cyanido-1
κC-iron(II)neodymium(III)]-di-µ-cyanido-
1:2'
C:
N;2:1'
N:
C] methanol solvate]
top
Crystal data top
[FeNd(CN)4(NO3)(C10H8N2)(CH4O)3]·CH4O | F(000) = 1292 |
Mr = 650.53 | Dx = 1.708 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3618 reflections |
a = 12.9908 (17) Å | θ = 2.1–25.1° |
b = 18.311 (3) Å | µ = 2.65 mm−1 |
c = 10.9171 (14) Å | T = 291 K |
β = 103.099 (2)° | Block, red |
V = 2529.3 (6) Å3 | 0.26 × 0.22 × 0.20 mm |
Z = 4 | |
Data collection top
Bruker SMART APEX CCD diffractometer | 4955 independent reflections |
Radiation source: sealed tube | 3841 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.044 |
phi and ω scans | θmax = 26.0°, θmin = 1.6° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −16→15 |
Tmin = 0.545, Tmax = 0.619 | k = −22→22 |
19739 measured reflections | l = −13→13 |
Refinement top
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.087 | H-atom parameters constrained |
S = 1.09 | w = 1/[σ2(Fo2) + (0.0424P)2] where P = (Fo2 + 2Fc2)/3 |
4955 reflections | (Δ/σ)max < 0.001 |
311 parameters | Δρmax = 0.56 e Å−3 |
0 restraints | Δρmin = −1.11 e Å−3 |
Crystal data top
[FeNd(CN)4(NO3)(C10H8N2)(CH4O)3]·CH4O | V = 2529.3 (6) Å3 |
Mr = 650.53 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.9908 (17) Å | µ = 2.65 mm−1 |
b = 18.311 (3) Å | T = 291 K |
c = 10.9171 (14) Å | 0.26 × 0.22 × 0.20 mm |
β = 103.099 (2)° | |
Data collection top
Bruker SMART APEX CCD diffractometer | 4955 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 3841 reflections with I > 2σ(I) |
Tmin = 0.545, Tmax = 0.619 | Rint = 0.044 |
19739 measured reflections | |
Refinement top
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.087 | H-atom parameters constrained |
S = 1.09 | Δρmax = 0.56 e Å−3 |
4955 reflections | Δρmin = −1.11 e Å−3 |
311 parameters | |
Special details top
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes)
are estimated using the full covariance matrix. The cell e.s.d.'s are taken
into account individually in the estimation of e.s.d.'s in distances, angles
and torsion angles; correlations between e.s.d.'s in cell parameters are only
used when they are defined by crystal symmetry. An approximate (isotropic)
treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s.
planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor
wR and goodness of fit S are based on F2, conventional
R-factors R are based on F, with F set to zero for
negative F2. The threshold expression of F2 >
σ(F2) is used only for calculating R-factors(gt) etc.
and is not relevant to the choice of reflections for refinement.
R-factors based on F2 are statistically about twice as large
as those based on F, and R- factors based on ALL data will be
even larger. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
C1 | 0.1104 (4) | 0.1472 (3) | 0.6439 (5) | 0.0417 (11) | |
H1 | 0.1599 | 0.1832 | 0.6396 | 0.050* | |
C2 | 0.0048 (4) | 0.1676 (3) | 0.6356 (5) | 0.0443 (11) | |
H2 | −0.0163 | 0.2160 | 0.6223 | 0.053* | |
C3 | −0.0678 (4) | 0.1131 (3) | 0.6478 (5) | 0.0456 (12) | |
H3 | −0.1379 | 0.1250 | 0.6453 | 0.055* | |
C4 | −0.0336 (4) | 0.0401 (3) | 0.6639 (5) | 0.0429 (11) | |
H4 | −0.0801 | 0.0030 | 0.6733 | 0.052* | |
C5 | 0.0696 (4) | 0.0250 (3) | 0.6653 (5) | 0.0422 (11) | |
C6 | 0.1125 (4) | −0.0503 (3) | 0.6783 (5) | 0.0427 (11) | |
C7 | 0.0477 (4) | −0.1114 (3) | 0.6780 (4) | 0.0419 (11) | |
H7 | −0.0245 | −0.1074 | 0.6731 | 0.050* | |
C8 | 0.0989 (4) | −0.1783 (3) | 0.6856 (5) | 0.0429 (11) | |
H8 | 0.0591 | −0.2206 | 0.6840 | 0.051* | |
C9 | 0.2058 (4) | −0.1846 (2) | 0.6952 (4) | 0.0405 (10) | |
H9 | 0.2386 | −0.2300 | 0.7051 | 0.049* | |
C10 | 0.2641 (4) | −0.1210 (2) | 0.6898 (5) | 0.0421 (11) | |
H10 | 0.3360 | −0.1246 | 0.6925 | 0.050* | |
C11 | 0.4279 (4) | 0.0018 (2) | 0.7109 (5) | 0.0386 (10) | |
C12 | 0.3533 (3) | 0.1364 (2) | 0.6900 (4) | 0.0339 (9) | |
C13 | 0.2814 (3) | 0.0409 (2) | 0.5050 (5) | 0.0350 (10) | |
C14 | 0.3024 (4) | 0.0474 (2) | −0.1376 (5) | 0.0380 (10) | |
C15 | 0.1969 (4) | −0.0899 (3) | 0.0669 (5) | 0.0512 (13) | |
H15A | 0.1299 | −0.0653 | 0.0496 | 0.077* | |
H15B | 0.1879 | −0.1391 | 0.0927 | 0.077* | |
H15C | 0.2246 | −0.0903 | −0.0075 | 0.077* | |
C16 | 0.2492 (4) | 0.2207 (3) | 0.3813 (5) | 0.0441 (11) | |
H16A | 0.1895 | 0.2372 | 0.3186 | 0.066* | |
H16B | 0.2779 | 0.2609 | 0.4349 | 0.066* | |
H16C | 0.2274 | 0.1829 | 0.4308 | 0.066* | |
C17 | 0.5136 (4) | 0.1553 (3) | 0.0464 (5) | 0.0442 (12) | |
H17A | 0.5348 | 0.1050 | 0.0510 | 0.066* | |
H17B | 0.5748 | 0.1858 | 0.0720 | 0.066* | |
H17C | 0.4783 | 0.1671 | −0.0384 | 0.066* | |
C18 | 0.5989 (4) | 0.1361 (3) | 0.5553 (5) | 0.0447 (12) | |
H18A | 0.5399 | 0.1034 | 0.5334 | 0.067* | |
H18B | 0.6613 | 0.1124 | 0.5418 | 0.067* | |
H18C | 0.5850 | 0.1791 | 0.5039 | 0.067* | |
Fe1 | 0.29139 (5) | 0.04225 (3) | 0.68333 (6) | 0.03462 (16) | |
N1 | 0.1420 (3) | 0.0773 (2) | 0.6579 (4) | 0.0388 (9) | |
N2 | 0.2172 (3) | −0.0533 (2) | 0.6805 (4) | 0.0377 (9) | |
N3 | 0.5104 (3) | −0.0228 (2) | 0.7293 (4) | 0.0423 (9) | |
N4 | 0.3950 (3) | 0.1909 (2) | 0.6947 (4) | 0.0422 (9) | |
N5 | 0.2782 (3) | 0.0451 (2) | 0.3990 (4) | 0.0434 (9) | |
N6 | 0.3086 (3) | 0.0511 (2) | −0.0318 (4) | 0.0443 (9) | |
N7 | 0.1067 (3) | 0.1383 (2) | 0.0705 (4) | 0.0462 (10) | |
Nd1 | 0.315496 (19) | 0.079138 (13) | 0.19074 (3) | 0.03793 (9) | |
O1 | 0.2706 (3) | −0.05154 (17) | 0.1676 (3) | 0.0421 (8) | |
H1A | 0.3377 | −0.0761 | 0.1736 | 0.051* | |
O2 | 0.3303 (3) | 0.19201 (18) | 0.3197 (3) | 0.0448 (8) | |
H2A | 0.3927 | 0.2185 | 0.3298 | 0.054* | |
O3 | 0.4415 (2) | 0.16775 (16) | 0.1299 (3) | 0.0398 (7) | |
H3A | 0.4428 | 0.2143 | 0.1644 | 0.048* | |
O4 | 0.1896 (3) | 0.17472 (18) | 0.0718 (3) | 0.0467 (8) | |
O5 | 0.1186 (2) | 0.07882 (18) | 0.1272 (3) | 0.0458 (8) | |
O6 | 0.0222 (3) | 0.16498 (18) | 0.0162 (3) | 0.0488 (9) | |
O7 | 0.6147 (3) | 0.15657 (17) | 0.6873 (3) | 0.0422 (8) | |
H7C | 0.5527 | 0.1810 | 0.7005 | 0.063* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
C1 | 0.035 (2) | 0.042 (2) | 0.050 (3) | −0.010 (2) | 0.013 (2) | −0.002 (2) |
C2 | 0.046 (3) | 0.043 (2) | 0.048 (3) | 0.008 (2) | 0.018 (2) | −0.009 (2) |
C3 | 0.035 (3) | 0.053 (3) | 0.052 (3) | 0.000 (2) | 0.017 (2) | −0.011 (2) |
C4 | 0.038 (2) | 0.045 (2) | 0.047 (3) | −0.007 (2) | 0.013 (2) | −0.003 (2) |
C5 | 0.035 (2) | 0.047 (3) | 0.045 (3) | 0.001 (2) | 0.011 (2) | 0.004 (2) |
C6 | 0.040 (3) | 0.042 (2) | 0.045 (3) | −0.007 (2) | 0.006 (2) | −0.006 (2) |
C7 | 0.039 (3) | 0.047 (3) | 0.040 (3) | −0.004 (2) | 0.010 (2) | 0.004 (2) |
C8 | 0.044 (3) | 0.040 (2) | 0.046 (3) | −0.009 (2) | 0.013 (2) | −0.006 (2) |
C9 | 0.044 (3) | 0.038 (2) | 0.042 (3) | −0.006 (2) | 0.014 (2) | −0.004 (2) |
C10 | 0.049 (3) | 0.036 (2) | 0.047 (3) | −0.006 (2) | 0.024 (2) | −0.011 (2) |
C11 | 0.036 (3) | 0.035 (2) | 0.045 (3) | −0.0022 (18) | 0.010 (2) | −0.0100 (19) |
C12 | 0.033 (2) | 0.037 (2) | 0.035 (2) | −0.0032 (18) | 0.0133 (19) | 0.0023 (19) |
C13 | 0.035 (2) | 0.032 (2) | 0.042 (3) | −0.0031 (17) | 0.016 (2) | −0.0012 (19) |
C14 | 0.038 (2) | 0.034 (2) | 0.043 (3) | −0.0078 (18) | 0.010 (2) | −0.009 (2) |
C15 | 0.046 (3) | 0.050 (3) | 0.051 (3) | −0.008 (2) | −0.004 (2) | −0.014 (2) |
C16 | 0.047 (3) | 0.044 (3) | 0.043 (3) | 0.004 (2) | 0.015 (2) | −0.001 (2) |
C17 | 0.047 (3) | 0.050 (3) | 0.041 (3) | 0.007 (2) | 0.019 (2) | 0.020 (2) |
C18 | 0.050 (3) | 0.042 (2) | 0.045 (3) | 0.017 (2) | 0.017 (2) | 0.004 (2) |
Fe1 | 0.0329 (3) | 0.0333 (3) | 0.0377 (4) | −0.0018 (2) | 0.0081 (3) | −0.0008 (3) |
N1 | 0.036 (2) | 0.043 (2) | 0.040 (2) | 0.0004 (17) | 0.0133 (17) | −0.0039 (18) |
N2 | 0.042 (2) | 0.0375 (19) | 0.033 (2) | −0.0084 (16) | 0.0076 (17) | −0.0052 (16) |
N3 | 0.043 (2) | 0.047 (2) | 0.038 (2) | 0.0098 (19) | 0.0093 (18) | 0.0068 (18) |
N4 | 0.046 (2) | 0.040 (2) | 0.045 (2) | −0.0003 (18) | 0.0170 (19) | 0.0002 (18) |
N5 | 0.035 (2) | 0.053 (2) | 0.046 (3) | −0.0093 (18) | 0.0183 (18) | −0.003 (2) |
N6 | 0.047 (2) | 0.041 (2) | 0.044 (3) | −0.0116 (18) | 0.0100 (19) | −0.0070 (19) |
N7 | 0.045 (2) | 0.048 (2) | 0.039 (2) | 0.007 (2) | −0.0043 (19) | 0.003 (2) |
Nd1 | 0.03385 (14) | 0.03406 (13) | 0.04546 (17) | −0.00020 (10) | 0.00808 (10) | 0.00075 (11) |
O1 | 0.0457 (18) | 0.0358 (16) | 0.0399 (18) | −0.0055 (14) | −0.0007 (14) | −0.0039 (14) |
O2 | 0.0458 (19) | 0.0461 (18) | 0.046 (2) | −0.0101 (15) | 0.0166 (15) | −0.0165 (16) |
O3 | 0.0452 (18) | 0.0357 (16) | 0.0399 (19) | −0.0041 (13) | 0.0126 (15) | 0.0059 (14) |
O4 | 0.052 (2) | 0.0418 (17) | 0.041 (2) | 0.0062 (15) | 0.0002 (16) | 0.0144 (15) |
O5 | 0.0346 (17) | 0.0510 (19) | 0.050 (2) | 0.0002 (15) | 0.0054 (15) | 0.0102 (17) |
O6 | 0.0479 (19) | 0.0461 (18) | 0.041 (2) | 0.0163 (15) | −0.0140 (16) | 0.0033 (15) |
O7 | 0.0434 (18) | 0.0420 (17) | 0.042 (2) | 0.0010 (14) | 0.0117 (15) | 0.0115 (14) |
Geometric parameters (Å, º) top
C1—N1 | 1.341 (6) | C16—O2 | 1.470 (6) |
C1—C2 | 1.405 (6) | C16—H16A | 0.9600 |
C1—H1 | 0.9300 | C16—H16B | 0.9600 |
C2—C3 | 1.400 (7) | C16—H16C | 0.9600 |
C2—H2 | 0.9300 | C17—O3 | 1.465 (6) |
C3—C4 | 1.407 (7) | C17—H17A | 0.9600 |
C3—H3 | 0.9300 | C17—H17B | 0.9600 |
C4—C5 | 1.366 (6) | C17—H17C | 0.9600 |
C4—H4 | 0.9300 | C18—O7 | 1.457 (6) |
C5—N1 | 1.357 (6) | C18—H18A | 0.9600 |
C5—C6 | 1.482 (6) | C18—H18B | 0.9600 |
C6—N2 | 1.357 (6) | C18—H18C | 0.9600 |
C6—C7 | 1.399 (6) | Fe1—C14ii | 1.930 (5) |
C7—C8 | 1.387 (7) | Fe1—N2 | 1.995 (4) |
C7—H7 | 0.9300 | Fe1—N1 | 2.003 (4) |
C8—C9 | 1.374 (6) | N3—Nd1iii | 2.459 (4) |
C8—H8 | 0.9300 | N5—Nd1 | 2.509 (4) |
C9—C10 | 1.397 (6) | N6—Nd1 | 2.465 (4) |
C9—H9 | 0.9300 | N7—O6 | 1.225 (5) |
C10—N2 | 1.374 (6) | N7—O5 | 1.245 (5) |
C10—H10 | 0.9300 | N7—O4 | 1.265 (5) |
C11—N3 | 1.138 (6) | N7—Nd1 | 2.940 (4) |
C11—Fe1 | 1.881 (5) | Nd1—N3iii | 2.459 (4) |
C12—N4 | 1.131 (6) | Nd1—O1 | 2.462 (3) |
C12—Fe1 | 1.896 (4) | Nd1—O2 | 2.483 (3) |
C13—N5 | 1.150 (6) | Nd1—O5 | 2.494 (3) |
C13—Fe1 | 1.922 (5) | Nd1—O3 | 2.499 (3) |
C14—N6 | 1.142 (6) | Nd1—O4 | 2.542 (3) |
C14—Fe1i | 1.930 (5) | O1—H1A | 0.9700 |
C15—O1 | 1.463 (5) | O2—H2A | 0.9300 |
C15—H15A | 0.9600 | O3—H3A | 0.9300 |
C15—H15B | 0.9600 | O7—H7C | 0.9605 |
C15—H15C | 0.9600 | | |
| | | |
N1—C1—C2 | 122.0 (4) | C11—Fe1—N1 | 175.29 (18) |
N1—C1—H1 | 119.0 | C12—Fe1—N1 | 95.93 (18) |
C2—C1—H1 | 119.0 | C13—Fe1—N1 | 91.30 (17) |
C3—C2—C1 | 118.3 (4) | C14ii—Fe1—N1 | 88.40 (18) |
C3—C2—H2 | 120.9 | N2—Fe1—N1 | 80.19 (16) |
C1—C2—H2 | 120.9 | C1—N1—C5 | 118.8 (4) |
C2—C3—C4 | 119.2 (4) | C1—N1—Fe1 | 125.7 (3) |
C2—C3—H3 | 120.4 | C5—N1—Fe1 | 115.4 (3) |
C4—C3—H3 | 120.4 | C6—N2—C10 | 117.7 (4) |
C5—C4—C3 | 118.4 (4) | C6—N2—Fe1 | 116.3 (3) |
C5—C4—H4 | 120.8 | C10—N2—Fe1 | 125.9 (3) |
C3—C4—H4 | 120.8 | C11—N3—Nd1iii | 169.3 (4) |
N1—C5—C4 | 123.3 (4) | C13—N5—Nd1 | 163.2 (4) |
N1—C5—C6 | 114.3 (4) | C14—N6—Nd1 | 171.1 (4) |
C4—C5—C6 | 122.4 (4) | O6—N7—O5 | 126.0 (4) |
N2—C6—C7 | 124.5 (4) | O6—N7—O4 | 117.5 (4) |
N2—C6—C5 | 113.1 (4) | O5—N7—O4 | 116.5 (4) |
C7—C6—C5 | 122.1 (4) | O6—N7—Nd1 | 176.6 (4) |
C8—C7—C6 | 115.3 (4) | O5—N7—Nd1 | 57.1 (2) |
C8—C7—H7 | 122.4 | O4—N7—Nd1 | 59.4 (2) |
C6—C7—H7 | 122.4 | N3iii—Nd1—O1 | 78.82 (12) |
C9—C8—C7 | 122.7 (4) | N3iii—Nd1—N6 | 95.03 (14) |
C9—C8—H8 | 118.6 | O1—Nd1—N6 | 75.01 (12) |
C7—C8—H8 | 118.6 | N3iii—Nd1—O2 | 101.60 (12) |
C8—C9—C10 | 118.4 (4) | O1—Nd1—O2 | 148.55 (11) |
C8—C9—H9 | 120.8 | N6—Nd1—O2 | 135.47 (12) |
C10—C9—H9 | 120.8 | N3iii—Nd1—O5 | 154.24 (12) |
N2—C10—C9 | 121.3 (4) | O1—Nd1—O5 | 76.42 (11) |
N2—C10—H10 | 119.4 | N6—Nd1—O5 | 85.38 (13) |
C9—C10—H10 | 119.4 | O2—Nd1—O5 | 95.87 (11) |
N3—C11—Fe1 | 179.0 (5) | N3iii—Nd1—O3 | 76.21 (12) |
N4—C12—Fe1 | 176.6 (4) | O1—Nd1—O3 | 139.26 (11) |
N5—C13—Fe1 | 175.2 (4) | N6—Nd1—O3 | 75.70 (12) |
N6—C14—Fe1i | 179.4 (5) | O2—Nd1—O3 | 68.85 (11) |
O1—C15—H15A | 109.5 | O5—Nd1—O3 | 128.30 (10) |
O1—C15—H15B | 109.5 | N3iii—Nd1—N5 | 85.71 (13) |
H15A—C15—H15B | 109.5 | O1—Nd1—N5 | 76.21 (12) |
O1—C15—H15C | 109.5 | N6—Nd1—N5 | 150.48 (13) |
H15A—C15—H15C | 109.5 | O2—Nd1—N5 | 72.49 (12) |
H15B—C15—H15C | 109.5 | O5—Nd1—N5 | 81.64 (12) |
O2—C16—H16A | 109.5 | O3—Nd1—N5 | 132.46 (12) |
O2—C16—H16B | 109.5 | N3iii—Nd1—O4 | 154.64 (12) |
H16A—C16—H16B | 109.5 | O1—Nd1—O4 | 120.45 (11) |
O2—C16—H16C | 109.5 | N6—Nd1—O4 | 76.36 (13) |
H16A—C16—H16C | 109.5 | O2—Nd1—O4 | 71.02 (11) |
H16B—C16—H16C | 109.5 | O5—Nd1—O4 | 50.14 (11) |
O3—C17—H17A | 109.5 | O3—Nd1—O4 | 78.54 (11) |
O3—C17—H17B | 109.5 | N5—Nd1—O4 | 113.59 (13) |
H17A—C17—H17B | 109.5 | N3iii—Nd1—N7 | 174.01 (12) |
O3—C17—H17C | 109.5 | O1—Nd1—N7 | 98.00 (11) |
H17A—C17—H17C | 109.5 | N6—Nd1—N7 | 79.19 (13) |
H17B—C17—H17C | 109.5 | O2—Nd1—N7 | 83.78 (11) |
O7—C18—H18A | 109.5 | O5—Nd1—N7 | 24.79 (11) |
O7—C18—H18B | 109.5 | O3—Nd1—N7 | 103.64 (11) |
H18A—C18—H18B | 109.5 | N5—Nd1—N7 | 98.51 (13) |
O7—C18—H18C | 109.5 | O4—Nd1—N7 | 25.38 (11) |
H18A—C18—H18C | 109.5 | C15—O1—Nd1 | 130.0 (3) |
H18B—C18—H18C | 109.5 | C15—O1—H1A | 104.7 |
C11—Fe1—C12 | 88.59 (19) | Nd1—O1—H1A | 104.8 |
C11—Fe1—C13 | 90.1 (2) | C16—O2—Nd1 | 125.9 (3) |
C12—Fe1—C13 | 88.90 (18) | C16—O2—H2A | 117.1 |
C11—Fe1—C14ii | 90.4 (2) | Nd1—O2—H2A | 117.1 |
C12—Fe1—C14ii | 89.03 (19) | C17—O3—Nd1 | 127.9 (3) |
C13—Fe1—C14ii | 177.86 (19) | C17—O3—H3A | 116.1 |
C11—Fe1—N2 | 95.24 (18) | Nd1—O3—H3A | 116.1 |
C12—Fe1—N2 | 175.72 (18) | N7—O4—Nd1 | 95.2 (2) |
C13—Fe1—N2 | 92.98 (17) | N7—O5—Nd1 | 98.1 (3) |
C14ii—Fe1—N2 | 89.05 (17) | C18—O7—H7C | 109.4 |
Symmetry codes: (i) x, y, z−1; (ii) x, y, z+1; (iii) −x+1, −y, −z+1. |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O7iii | 0.97 | 2.11 | 2.713 (4) | 119 |
O2—H2A···N4iv | 0.93 | 2.23 | 2.773 (5) | 117 |
O3—H3A···N4iv | 0.93 | 1.90 | 2.786 (5) | 159 |
Symmetry codes: (iii) −x+1, −y, −z+1; (iv) x, −y+1/2, z−1/2. |
Experimental details
Crystal data |
Chemical formula | [FeNd(CN)4(NO3)(C10H8N2)(CH4O)3]·CH4O |
Mr | 650.53 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 291 |
a, b, c (Å) | 12.9908 (17), 18.311 (3), 10.9171 (14) |
β (°) | 103.099 (2) |
V (Å3) | 2529.3 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 2.65 |
Crystal size (mm) | 0.26 × 0.22 × 0.20 |
|
Data collection |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.545, 0.619 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 19739, 4955, 3841 |
Rint | 0.044 |
(sin θ/λ)max (Å−1) | 0.617 |
|
Refinement |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.087, 1.09 |
No. of reflections | 4955 |
No. of parameters | 311 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.56, −1.11 |
Selected geometric parameters (Å, º) topC11—Fe1 | 1.881 (5) | N6—Nd1 | 2.465 (4) |
C12—Fe1 | 1.896 (4) | Nd1—N3ii | 2.459 (4) |
C13—Fe1 | 1.922 (5) | Nd1—O1 | 2.462 (3) |
C14—Fe1i | 1.930 (5) | Nd1—O2 | 2.483 (3) |
Fe1—N2 | 1.995 (4) | Nd1—O5 | 2.494 (3) |
Fe1—N1 | 2.003 (4) | Nd1—O3 | 2.499 (3) |
N5—Nd1 | 2.509 (4) | Nd1—O4 | 2.542 (3) |
| | | |
C11—Fe1—C12 | 88.59 (19) | C11—N3—Nd1ii | 169.3 (4) |
C11—Fe1—C13 | 90.1 (2) | C13—N5—Nd1 | 163.2 (4) |
C12—Fe1—C13 | 88.90 (18) | C14—N6—Nd1 | 171.1 (4) |
C11—Fe1—C14iii | 90.4 (2) | N3ii—Nd1—O1 | 78.82 (12) |
C12—Fe1—C14iii | 89.03 (19) | N3ii—Nd1—N6 | 95.03 (14) |
C13—Fe1—C14iii | 177.86 (19) | O1—Nd1—N6 | 75.01 (12) |
C11—Fe1—N2 | 95.24 (18) | N3ii—Nd1—O2 | 101.60 (12) |
C12—Fe1—N2 | 175.72 (18) | O1—Nd1—O2 | 148.55 (11) |
C13—Fe1—N2 | 92.98 (17) | N6—Nd1—O2 | 135.47 (12) |
C14iii—Fe1—N2 | 89.05 (17) | N3ii—Nd1—O4 | 154.64 (12) |
C11—Fe1—N1 | 175.29 (18) | N6—Nd1—O4 | 76.36 (13) |
C12—Fe1—N1 | 95.93 (18) | O5—Nd1—O4 | 50.14 (11) |
C13—Fe1—N1 | 91.30 (17) | C15—O1—Nd1 | 130.0 (3) |
C14iii—Fe1—N1 | 88.40 (18) | C16—O2—Nd1 | 125.9 (3) |
N2—Fe1—N1 | 80.19 (16) | C17—O3—Nd1 | 127.9 (3) |
Symmetry codes: (i) x, y, z−1; (ii) −x+1, −y, −z+1; (iii) x, y, z+1. |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O7ii | 0.97 | 2.11 | 2.713 (4) | 119.0 |
O2—H2A···N4iv | 0.93 | 2.23 | 2.773 (5) | 116.9 |
O3—H3A···N4iv | 0.93 | 1.90 | 2.786 (5) | 158.8 |
Symmetry codes: (ii) −x+1, −y, −z+1; (iv) x, −y+1/2, z−1/2. |
There has been a growing interest in the preparation and study of mixed lanthanide–transition metal compounds because lanthanide ions have a rich coordination chemistry with high coordination numbers and significant coordination flexibility, which often leads to unanticipated but remarkable structures (Huang et al., 2008; Zhao et al., 2007; Yeung et al., 2006). A few supramolecular materials have been reported combining the hexacyanometalate ions, [M(CN)6]3- (M = Fe and Cr) or octacyanometalate ions [M(CN)8]3-/4- (M = Mo, W and Nb) as building blocks with lanthanide ions (Li et al., 2008; Sun et al., 2007; Przychodzen et al., 2007). However, as far as we know, examples of 3d–4f cyano-bridged coordination polymers that incorporate diamagnetic [FeII(L)(CN)4]2- [L is 2,2'-bipyridine (bipy) or 1,10-phenanthroline] building blocks (Zhao, Wang & Fang, 2004; Zhao, Wang, Fang & Chen, 2004) are rare. In this contribution, we report an interesting one-dimensional ladder-like 3d–4f cyano-bridged coordination polymer, (I), based on the [FeII(bipy)(CN)4]2- building block.
The asymmetric unit in the structure of (I) comprises one [FeII(bipy)(CN)4]2- anion, one [NdIII(NO3)(CH3OH)3]2+ cation and one solvent methanol molecule (Fig. 1). Selected geometric parameters are given in Table 1. The crystal structure of (I) consists of one-dimensioanl ladder-like bimetallic neutral chains, {[FeII(bipy)(CN)4][NdIII(NO3)(CH3OH)3]}n, built up from alternating FeII and NdIII metal centers linked through the cyano bridges (Fig. 2). The ladder-like bimetallic chains contain Fe2Nd2 centrosymmetric quadrangle motifs. The [Fe(bipy)(CN)4]2- fragment exhibits a distorted octahedral structure consisting of two N atoms from a planar bipy ligand and four C atoms from four CN- groups. The small bite angle subtended by the chelating bipy group [80.19 (16)° for N1—Fe1—N2] is one of the main factors accounting for this distortion. The values of the Fe—N(bipy) bond distances [2.003 (4) and 1.995 (4) Å] are practically the same as those observed in the low-spin iron(II) compound K2[FeII(bipy)(CN)4].2.5H2O [1.987 (4)–2.003 (4) Å; Nieuwenhuyzen et al., 1998] and in the mononuclear PPh4[Fe(bipy)(CN)4] and the trinuclear species [{FeIII(bipy)(CN)4}2MII(H2O)4].4H2O (M = Mn or Zn; Lescouezec et al., 2002). Three of the four cyano groups of the [Fe(bipy)(CN)4]2- unit in (I) are bridging, while the fourth is terminal. The Fe—C—N angles for both terminal [176.6 (4)°] and bridging [175.2 (4), 179.0 (5) and 179.4 (5)°] CN- groups deviate slightly from strict linearity. Each NdIII cation is eight-coordinated, connecting with two O atoms from the NO3 group, three O atoms from three CH3OH units and three N atoms from three CN- ligands, building distorted NdN3O5 dodecahedral surroundings (Fig. 1). The Nd—O bond lengths fall in a very narrow range [2.494 (3)–2.542 (3) Å for Nd—O(NO3) and 2.462 (3)–2.499 (3) Å for Nd—O(CH3OH)]. The Nd—N(cyanide) bond distances [2.459 (4)–2.509 (4) Å] are somewhat smaller than those from {[Ru(phen)(CN)4]3[Ln(terpy)(H2O)3]2.nH2O}∞ [2.530 (9)–2.548 (11) Å; Baca et al., 2007]. The NO3- ion acts as a bidentate ligand toward NdIII through two of its three O atoms, which is different from previously reported cases (Yuan et al., 2004; Liu et al., 2008), in which an NO3- ion coordinated to a lanthanide ion acts as a monodenate ligand in lanthanide–transition metal complexes.
The angles of the cyanide–NdIII interactions are far from linear [Nd1ii—N3—C11 = 169.3 (4)°, Nd1—N6—C14 = 171.1 (4)°, Nd1—N5—C13 = 163.2 (4)°; symmetry code: (ii) -x + 1, -y, -z +1; Fig. 2]. The Fe···Nd separations across cyanide bridges are 5.499 (4), 5.518 (5) and 5.452 (4) Å, in good agreement with those of {[Ru(phen)(CN)4]3[Ln(terpy)(H2O)3]2.nH2O}∞ (Baca et al., 2007). The uncoordinated solvent methanol molecules are involved in hydrogen-bonding interactions with the one terminal cyano group and a coordinated methanol molecule from another [NdIII(NO3)(CH3OH)3]2- unit (Table 2).
Adjacent ladder-like chains are also held together by weak hydrogen-bonds between the terminal cyanide ligands of the [Fe(bipy)(CN)4]2- units in one chain and the OH donors of CH3OH ligands from [NdIII(NO3)(CH3OH)3] units in neighboring chains (Table 2). The two-dimensional structure is formed by the chains stacking along the b direction, mainly via hydrogen-bonding interactions (Fig. 3).