Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536805041310/ci6702sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536805041310/ci6702Isup2.hkl |
CCDC reference: 296531
(2-Pyridyl)methanol (2 mmol) was added to copper(II) acetate (1 mmol) in aqueous solution (Volume?). 3,5-Dinitrobenzoic acid (2 mmol) was then added. The powdery blue product was filtered off and dried at room temperature. Blue prismatic crystals of (I) suitable for X-ray analysis were obtained from the mother liquor after slow room-temperature crystallization for a few weeks.
Atoms H31 and H41 were located in a difference Fourier map and their positions were not refined. The remaining H atoms were placed in geometrically calculated positions and allowed to ride on their parent atoms, with C—H distances of 0.93 (aromatic) or 0.97 Å (methylene). The Uiso value for all H atoms was fixed at 0.05 Å2. Atom O11 of an NO2 group is disordered over two positions, O11A and O11B. The occupancy factors were initially refined to 0.502 (2) and 0.498 (2), but later fixed at 0.5 each.
Data collection: XSCANS (Siemens, 1994); cell refinement: XSCANS; data reduction: XSCANS; program(s) used to solve structure: SHELXS86 (Sheldrick, 1985); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: WinGX (Farrugia, 1999).
Fig. 1. The asymmetric unit of (I). Displacement ellipsoids are drawn at the 40% probability level. Dotted lines represent O—H···O hydrogen bonds. |
[Cu(C7H3N2O6)(C6H7NO)2](C7H3N2O6) | Z = 2 |
Mr = 704.02 | F(000) = 718 |
Triclinic, P1 | Dx = 1.623 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.870 (1) Å | Cell parameters from 25 reflections |
b = 12.181 (1) Å | θ = 4.2–12.0° |
c = 12.732 (1) Å | µ = 0.84 mm−1 |
α = 95.29 (1)° | T = 293 K |
β = 108.68 (1)° | Prism, blue |
γ = 91.80 (1)° | 0.55 × 0.45 × 0.30 mm |
V = 1440.9 (2) Å3 |
Siemens P4 diffractometer | 5266 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.029 |
Graphite monochromator | θmax = 27.5°, θmin = 1.7° |
ϕ scans | h = −1→12 |
Absorption correction: ψ scan (XEMP; Siemens, 1990) | k = −15→15 |
Tmin = 0.641, Tmax = 0.777 | l = −16→16 |
7697 measured reflections | 2 standard reflections every 100 reflections |
6556 independent reflections | intensity decay: none |
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) = 0.111 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0601P)2 + 0.292P] where P = (Fo2 + 2Fc2)/3 |
6556 reflections | (Δ/σ)max = 0.001 |
433 parameters | Δρmax = 0.52 e Å−3 |
0 restraints | Δρmin = −0.63 e Å−3 |
[Cu(C7H3N2O6)(C6H7NO)2](C7H3N2O6) | γ = 91.80 (1)° |
Mr = 704.02 | V = 1440.9 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.870 (1) Å | Mo Kα radiation |
b = 12.181 (1) Å | µ = 0.84 mm−1 |
c = 12.732 (1) Å | T = 293 K |
α = 95.29 (1)° | 0.55 × 0.45 × 0.30 mm |
β = 108.68 (1)° |
Siemens P4 diffractometer | 5266 reflections with I > 2σ(I) |
Absorption correction: ψ scan (XEMP; Siemens, 1990) | Rint = 0.029 |
Tmin = 0.641, Tmax = 0.777 | 2 standard reflections every 100 reflections |
7697 measured reflections | intensity decay: none |
6556 independent reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.111 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.52 e Å−3 |
6556 reflections | Δρmin = −0.63 e Å−3 |
433 parameters |
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. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Cu1 | 0.24345 (3) | 0.20701 (2) | 0.07794 (2) | 0.03324 (9) | |
O1 | 0.35754 (18) | 0.19589 (14) | 0.23424 (12) | 0.0414 (4) | |
O2 | 0.1409 (2) | 0.1750 (2) | 0.24923 (16) | 0.0662 (6) | |
O3 | 0.2916 (3) | 0.0366 (3) | 0.7348 (2) | 0.0919 (9) | |
O4 | 0.1022 (2) | 0.0602 (2) | 0.60108 (18) | 0.0700 (6) | |
O5 | 0.7777 (2) | 0.1572 (2) | 0.5571 (2) | 0.0748 (7) | |
O6 | 0.7535 (2) | 0.1458 (2) | 0.71725 (17) | 0.0717 (6) | |
O7 | 0.3371 (3) | 0.3479 (2) | −0.17568 (17) | 0.0740 (7) | |
O8 | 0.1061 (2) | 0.28979 (18) | −0.22585 (15) | 0.0577 (5) | |
O9 | 0.3235 (3) | 0.5979 (2) | −0.5875 (2) | 0.0910 (9) | |
O10 | 0.4646 (3) | 0.59000 (19) | −0.4202 (2) | 0.0742 (7) | |
O11A | −0.1383 (10) | 0.2283 (8) | −0.6324 (9) | 0.079 (3) | 0.5 |
O11B | −0.1840 (10) | 0.2716 (8) | −0.6236 (9) | 0.079 (3) | 0.5 |
O12 | −0.1152 (2) | 0.3650 (2) | −0.7290 (2) | 0.0682 (6) | |
O31 | 0.08534 (17) | 0.18756 (13) | −0.06853 (12) | 0.0380 (3) | |
O41 | 0.42129 (19) | 0.29544 (14) | 0.03027 (13) | 0.0438 (4) | |
N1 | 0.2311 (2) | 0.0616 (2) | 0.64227 (18) | 0.0496 (5) | |
N2 | 0.7052 (2) | 0.14946 (18) | 0.61728 (17) | 0.0457 (5) | |
N3 | 0.3560 (3) | 0.5606 (2) | −0.4977 (2) | 0.0599 (6) | |
N4 | −0.0882 (3) | 0.3228 (2) | −0.6427 (2) | 0.0580 (6) | |
N5 | 0.2700 (2) | 0.05234 (15) | 0.03196 (14) | 0.0331 (4) | |
N6 | 0.2107 (2) | 0.36586 (16) | 0.10705 (15) | 0.0399 (4) | |
C11 | 0.2717 (3) | 0.17695 (19) | 0.28778 (17) | 0.0385 (5) | |
C12 | 0.3406 (2) | 0.15251 (17) | 0.40698 (17) | 0.0332 (4) | |
C13 | 0.2550 (2) | 0.11972 (18) | 0.46765 (18) | 0.0352 (5) | |
H13 | 0.1558 | 0.1119 | 0.4355 | 0.05* | |
C14 | 0.3197 (2) | 0.09860 (19) | 0.57692 (18) | 0.0362 (5) | |
C15 | 0.4665 (3) | 0.10997 (18) | 0.62806 (18) | 0.0372 (5) | |
H15 | 0.5083 | 0.0972 | 0.7021 | 0.05* | |
C16 | 0.5475 (2) | 0.14104 (18) | 0.56520 (18) | 0.0348 (5) | |
C17 | 0.4891 (2) | 0.16214 (17) | 0.45530 (17) | 0.0337 (4) | |
H17 | 0.5475 | 0.1825 | 0.4148 | 0.05* | |
C21 | 0.2137 (3) | 0.3307 (2) | −0.2428 (2) | 0.0435 (6) | |
C22 | 0.1871 (3) | 0.36606 (19) | −0.3591 (2) | 0.0403 (5) | |
C23 | 0.2849 (3) | 0.4393 (2) | −0.3773 (2) | 0.0437 (5) | |
H23 | 0.3689 | 0.464 | −0.3200 | 0.05* | |
C24 | 0.2565 (3) | 0.4758 (2) | −0.4816 (2) | 0.0445 (6) | |
C25 | 0.1353 (3) | 0.4388 (2) | −0.5702 (2) | 0.0450 (6) | |
H25 | 0.1173 | 0.4638 | −0.6399 | 0.05* | |
C26 | 0.0430 (3) | 0.3635 (2) | −0.5497 (2) | 0.0418 (5) | |
C27 | 0.0637 (3) | 0.3273 (2) | −0.4458 (2) | 0.0416 (5) | |
H27 | −0.0031 | 0.2782 | −0.4344 | 0.05* | |
C31 | 0.0528 (2) | 0.07582 (19) | −0.11763 (18) | 0.0383 (5) | |
H311 | 0.0412 | 0.072 | −0.1965 | 0.05* | |
H312 | −0.0367 | 0.0487 | −0.1101 | 0.05* | |
C32 | 0.1708 (2) | 0.00433 (19) | −0.06115 (17) | 0.0336 (4) | |
C33 | 0.1782 (3) | −0.1036 (2) | −0.1014 (2) | 0.0469 (6) | |
H33 | 0.1076 | −0.1365 | −0.1652 | 0.05* | |
C34 | 0.2923 (3) | −0.1623 (2) | −0.0454 (2) | 0.0522 (6) | |
H34 | 0.2999 | −0.2349 | −0.0717 | 0.05* | |
C35 | 0.3950 (3) | −0.1123 (2) | 0.0503 (2) | 0.0485 (6) | |
H35 | 0.4722 | −0.1504 | 0.0892 | 0.05* | |
C36 | 0.3804 (3) | −0.0050 (2) | 0.08645 (19) | 0.0413 (5) | |
H36 | 0.4487 | 0.029 | 0.1509 | 0.05* | |
C41 | 0.4531 (3) | 0.3936 (2) | 0.1051 (2) | 0.0520 (6) | |
H411 | 0.5045 | 0.448 | 0.0785 | 0.05* | |
H412 | 0.5145 | 0.3776 | 0.1777 | 0.05* | |
C42 | 0.0882 (3) | 0.4004 (2) | 0.1186 (2) | 0.0511 (6) | |
H42 | 0.0139 | 0.3484 | 0.1117 | 0.05* | |
C43 | 0.0686 (4) | 0.5103 (3) | 0.1400 (2) | 0.0648 (9) | |
H43 | −0.017 | 0.5322 | 0.1485 | 0.05* | |
C44 | 0.1769 (4) | 0.5870 (3) | 0.1492 (3) | 0.0708 (10) | |
H44 | 0.165 | 0.6618 | 0.1628 | 0.05* | |
C45 | 0.3034 (4) | 0.5526 (2) | 0.1374 (2) | 0.0639 (8) | |
H45 | 0.3782 | 0.6039 | 0.1439 | 0.05* | |
C46 | 0.3182 (3) | 0.4400 (2) | 0.11589 (19) | 0.0471 (6) | |
H31 | 0.0951 | 0.2276 | −0.119 | 0.05* | |
H41 | 0.388 | 0.3175 | −0.0407 | 0.05* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cu1 | 0.03677 (16) | 0.03858 (15) | 0.02142 (13) | 0.00363 (11) | 0.00477 (10) | 0.00492 (9) |
O1 | 0.0457 (9) | 0.0521 (9) | 0.0224 (7) | 0.0046 (8) | 0.0050 (7) | 0.0053 (6) |
O2 | 0.0363 (10) | 0.1082 (17) | 0.0447 (10) | −0.0038 (10) | −0.0063 (8) | 0.0349 (11) |
O3 | 0.0616 (14) | 0.167 (3) | 0.0590 (14) | 0.0121 (16) | 0.0228 (12) | 0.0614 (17) |
O4 | 0.0438 (12) | 0.1122 (19) | 0.0593 (13) | 0.0013 (12) | 0.0224 (10) | 0.0164 (12) |
O5 | 0.0358 (11) | 0.118 (2) | 0.0686 (14) | −0.0087 (12) | 0.0116 (10) | 0.0214 (13) |
O6 | 0.0440 (11) | 0.1083 (18) | 0.0452 (11) | −0.0042 (11) | −0.0118 (9) | 0.0186 (11) |
O7 | 0.0654 (14) | 0.1102 (18) | 0.0374 (10) | −0.0176 (13) | 0.0025 (10) | 0.0223 (11) |
O8 | 0.0624 (12) | 0.0718 (13) | 0.0392 (10) | −0.0053 (10) | 0.0141 (9) | 0.0194 (9) |
O9 | 0.122 (2) | 0.0874 (17) | 0.0582 (14) | −0.0327 (16) | 0.0198 (14) | 0.0310 (13) |
O10 | 0.0823 (17) | 0.0710 (14) | 0.0611 (13) | −0.0314 (13) | 0.0167 (12) | 0.0014 (11) |
O11A | 0.077 (6) | 0.099 (6) | 0.049 (3) | −0.040 (4) | 0.011 (4) | −0.004 (4) |
O11B | 0.060 (5) | 0.111 (7) | 0.054 (4) | −0.031 (4) | 0.003 (3) | 0.019 (5) |
O12 | 0.0659 (14) | 0.0899 (16) | 0.0382 (10) | 0.0011 (12) | 0.0019 (9) | 0.0087 (10) |
O31 | 0.0407 (9) | 0.0445 (8) | 0.0254 (7) | 0.0046 (7) | 0.0047 (6) | 0.0088 (6) |
O41 | 0.0440 (9) | 0.0506 (9) | 0.0355 (8) | 0.0027 (8) | 0.0116 (7) | 0.0037 (7) |
N1 | 0.0436 (12) | 0.0684 (14) | 0.0402 (11) | 0.0042 (11) | 0.0168 (10) | 0.0119 (10) |
N2 | 0.0340 (11) | 0.0528 (12) | 0.0402 (11) | −0.0020 (9) | −0.0024 (9) | 0.0094 (9) |
N3 | 0.0792 (18) | 0.0527 (13) | 0.0473 (13) | −0.0154 (13) | 0.0216 (13) | 0.0066 (10) |
N4 | 0.0556 (15) | 0.0805 (17) | 0.0319 (11) | −0.0078 (13) | 0.0093 (10) | −0.0018 (11) |
N5 | 0.0334 (9) | 0.0399 (9) | 0.0236 (8) | 0.0003 (8) | 0.0057 (7) | 0.0051 (7) |
N6 | 0.0509 (12) | 0.0428 (10) | 0.0254 (8) | 0.0063 (9) | 0.0107 (8) | 0.0065 (7) |
C11 | 0.0412 (13) | 0.0422 (12) | 0.0249 (10) | −0.0018 (10) | 0.0001 (9) | 0.0075 (8) |
C12 | 0.0342 (11) | 0.0335 (10) | 0.0257 (10) | 0.0019 (9) | 0.0013 (8) | 0.0033 (8) |
C13 | 0.0317 (11) | 0.0403 (11) | 0.0296 (10) | 0.0033 (9) | 0.0042 (8) | 0.0040 (8) |
C14 | 0.0371 (12) | 0.0411 (11) | 0.0301 (10) | 0.0024 (9) | 0.0103 (9) | 0.0054 (8) |
C15 | 0.0403 (12) | 0.0416 (11) | 0.0255 (10) | 0.0030 (10) | 0.0035 (9) | 0.0083 (8) |
C16 | 0.0306 (11) | 0.0365 (11) | 0.0302 (10) | −0.0013 (9) | 0.0001 (8) | 0.0046 (8) |
C17 | 0.0342 (11) | 0.0357 (10) | 0.0277 (10) | −0.0025 (9) | 0.0056 (8) | 0.0040 (8) |
C21 | 0.0578 (16) | 0.0431 (12) | 0.0283 (11) | 0.0002 (11) | 0.0126 (11) | 0.0036 (9) |
C22 | 0.0513 (14) | 0.0396 (11) | 0.0300 (11) | 0.0023 (10) | 0.0136 (10) | 0.0032 (9) |
C23 | 0.0538 (15) | 0.0410 (12) | 0.0332 (11) | −0.0040 (11) | 0.0113 (10) | 0.0016 (9) |
C24 | 0.0583 (15) | 0.0395 (12) | 0.0364 (12) | −0.0035 (11) | 0.0173 (11) | 0.0039 (9) |
C25 | 0.0609 (16) | 0.0467 (13) | 0.0288 (11) | 0.0041 (12) | 0.0162 (11) | 0.0054 (9) |
C26 | 0.0497 (14) | 0.0458 (12) | 0.0282 (10) | 0.0030 (11) | 0.0116 (10) | −0.0008 (9) |
C27 | 0.0500 (14) | 0.0430 (12) | 0.0334 (11) | −0.0016 (10) | 0.0166 (10) | 0.0028 (9) |
C31 | 0.0305 (11) | 0.0492 (13) | 0.0298 (10) | −0.0012 (9) | 0.0020 (9) | 0.0062 (9) |
C32 | 0.0292 (10) | 0.0453 (12) | 0.0262 (9) | −0.0023 (9) | 0.0086 (8) | 0.0067 (8) |
C33 | 0.0427 (14) | 0.0485 (13) | 0.0392 (12) | −0.0046 (11) | 0.0027 (11) | −0.0061 (10) |
C34 | 0.0524 (16) | 0.0436 (13) | 0.0526 (15) | 0.0058 (12) | 0.0088 (12) | −0.0058 (11) |
C35 | 0.0459 (14) | 0.0496 (14) | 0.0449 (13) | 0.0136 (11) | 0.0063 (11) | 0.0067 (11) |
C36 | 0.0410 (13) | 0.0479 (13) | 0.0288 (10) | 0.0051 (10) | 0.0025 (9) | 0.0034 (9) |
C41 | 0.0496 (15) | 0.0513 (14) | 0.0487 (14) | −0.0074 (12) | 0.0087 (12) | 0.0023 (11) |
C42 | 0.0604 (17) | 0.0596 (16) | 0.0373 (12) | 0.0175 (13) | 0.0190 (12) | 0.0092 (11) |
C43 | 0.086 (2) | 0.072 (2) | 0.0392 (14) | 0.0367 (19) | 0.0212 (15) | 0.0074 (13) |
C44 | 0.105 (3) | 0.0486 (16) | 0.0480 (16) | 0.0265 (18) | 0.0093 (17) | −0.0024 (12) |
C45 | 0.087 (2) | 0.0410 (14) | 0.0490 (15) | −0.0006 (15) | 0.0051 (15) | −0.0037 (12) |
C46 | 0.0602 (16) | 0.0447 (13) | 0.0285 (11) | 0.0026 (12) | 0.0046 (11) | 0.0009 (9) |
Cu1—O1 | 1.967 (2) | C15—H15 | 0.93 |
Cu1—N5 | 1.972 (2) | C16—C17 | 1.384 (3) |
Cu1—N6 | 1.993 (2) | C17—H17 | 0.93 |
Cu1—O31 | 2.000 (2) | C21—C22 | 1.524 (3) |
Cu1—O41 | 2.301 (2) | C22—C23 | 1.381 (4) |
O1—C11 | 1.274 (3) | C22—C27 | 1.390 (3) |
O2—C11 | 1.224 (3) | C23—C24 | 1.386 (3) |
O3—N1 | 1.210 (3) | C23—H23 | 0.93 |
O4—N1 | 1.210 (3) | C24—C25 | 1.383 (4) |
O5—N2 | 1.212 (3) | C25—C26 | 1.372 (4) |
O6—N2 | 1.214 (3) | C25—H25 | 0.93 |
O9—N3 | 1.219 (3) | C26—C27 | 1.387 (3) |
O10—N3 | 1.219 (3) | C27—H27 | 0.93 |
O11A—N4 | 1.273 (1) | C31—C32 | 1.508 (3) |
O11B—N4 | 1.217 (1) | C31—H311 | 0.97 |
O12—N4 | 1.212 (3) | C31—H312 | 0.97 |
O31—C31 | 1.426 (3) | C32—C33 | 1.380 (3) |
O31—H31 | 0.87 | C33—C34 | 1.384 (4) |
O41—C41 | 1.418 (3) | C33—H33 | 0.93 |
O41—H41 | 0.92 | C34—C35 | 1.385 (4) |
N1—C14 | 1.474 (3) | C34—H34 | 0.93 |
N2—C16 | 1.479 (3) | C35—C36 | 1.373 (4) |
N3—C24 | 1.475 (3) | C35—H35 | 0.93 |
N4—C26 | 1.482 (3) | C36—H36 | 0.93 |
N5—C32 | 1.341 (3) | C41—C46 | 1.504 (4) |
N5—C36 | 1.345 (3) | C41—H411 | 0.97 |
N6—C42 | 1.339 (3) | C41—H412 | 0.97 |
N6—C46 | 1.341 (3) | C42—C43 | 1.373 (4) |
C11—C12 | 1.513 (3) | C42—H42 | 0.93 |
C12—C13 | 1.387 (3) | C43—C44 | 1.367 (5) |
C12—C17 | 1.392 (3) | C43—H43 | 0.93 |
C13—C14 | 1.384 (3) | C44—C45 | 1.377 (5) |
C13—H13 | 0.93 | C44—H44 | 0.93 |
C14—C15 | 1.381 (3) | C45—C46 | 1.395 (4) |
C15—C16 | 1.368 (3) | C45—H45 | 0.93 |
O1—Cu1—N5 | 92.43 (7) | C23—C22—C27 | 120.1 (2) |
O1—Cu1—N6 | 93.46 (7) | C23—C22—C21 | 119.5 (2) |
N5—Cu1—N6 | 173.81 (7) | C27—C22—C21 | 120.4 (2) |
O1—Cu1—O31 | 162.24 (7) | C22—C23—C24 | 119.3 (2) |
N5—Cu1—O31 | 81.75 (7) | C22—C23—H23 | 120.4 |
N6—Cu1—O31 | 93.16 (7) | C24—C23—H23 | 120.3 |
O1—Cu1—O41 | 96.50 (7) | C25—C24—C23 | 122.4 (2) |
N5—Cu1—O41 | 99.99 (7) | C25—C24—N3 | 118.7 (2) |
N6—Cu1—O41 | 77.45 (8) | C23—C24—N3 | 118.8 (2) |
O31—Cu1—O41 | 101.02 (6) | C26—C25—C24 | 116.5 (2) |
C11—O1—Cu1 | 108.2 (1) | C26—C25—H25 | 121.8 |
O11B—O11A—N4 | 68.8 (2) | C24—C25—H25 | 121.7 |
O11A—O11B—N4 | 77.3 (2) | C25—C26—C27 | 123.4 (2) |
C31—O31—Cu1 | 114.2 (2) | C25—C26—N4 | 117.8 (2) |
C31—O31—H31 | 108 | C27—C26—N4 | 118.7 (2) |
Cu1—O31—H31 | 116.1 | C26—C27—C22 | 118.3 (2) |
C41—O41—Cu1 | 102.1 (2) | C26—C27—H27 | 121 |
C41—O41—H41 | 106.2 | C22—C27—H27 | 120.8 |
Cu1—O41—H41 | 112.2 | O31—C31—C32 | 110.4 (2) |
O3—N1—O4 | 123.9 (2) | O31—C31—H311 | 109.8 |
O3—N1—C14 | 118.0 (2) | C32—C31—H311 | 109.7 |
O4—N1—C14 | 118.0 (2) | O31—C31—H312 | 109.4 |
O5—N2—O6 | 124.2 (2) | C32—C31—H312 | 109.5 |
O5—N2—C16 | 118.0 (2) | H311—C31—H312 | 108.1 |
O6—N2—C16 | 117.8 (2) | N5—C32—C33 | 121.3 (2) |
O9—N3—O10 | 124.0 (3) | N5—C32—C31 | 115.7 (2) |
O9—N3—C24 | 117.9 (3) | C33—C32—C31 | 123.0 (2) |
O10—N3—C24 | 118.1 (2) | C32—C33—C34 | 119.0 (2) |
O12—N4—O11B | 118.9 (5) | C32—C33—H33 | 120.5 |
O12—N4—O11A | 125.3 (5) | C34—C33—H33 | 120.5 |
O12—N4—C26 | 118.5 (2) | C33—C34—C35 | 119.5 (2) |
O11B—N4—C26 | 119.6 (5) | C33—C34—H34 | 120.3 |
O11A—N4—C26 | 113.4 (5) | C35—C34—H34 | 120.1 |
C32—N5—C36 | 119.6 (2) | C36—C35—C34 | 118.4 (2) |
C32—N5—Cu1 | 116.1 (2) | C36—C35—H35 | 120.7 |
C36—N5—Cu1 | 124.3 (2) | C34—C35—H35 | 120.8 |
C42—N6—C46 | 119.7 (2) | N5—C36—C35 | 122.1 (2) |
C42—N6—Cu1 | 123.0 (2) | N5—C36—H36 | 119 |
C46—N6—Cu1 | 117.3 (2) | C35—C36—H36 | 118.9 |
O2—C11—O1 | 125.0 (2) | O41—C41—C46 | 110.9 (2) |
O2—C11—C12 | 119.2 (2) | O41—C41—H411 | 109.6 |
O1—C11—C12 | 115.8 (2) | C46—C41—H411 | 109.5 |
C13—C12—C17 | 120.2 (2) | O41—C41—H412 | 109.3 |
C13—C12—C11 | 119.6 (2) | C46—C41—H412 | 109.5 |
C17—C12—C11 | 120.2 (2) | H411—C41—H412 | 108 |
C14—C13—C12 | 118.8 (2) | N6—C42—C43 | 122.1 (3) |
C14—C13—H13 | 120.5 | N6—C42—H42 | 119.1 |
C12—C13—H13 | 120.6 | C43—C42—H42 | 118.9 |
C15—C14—C13 | 122.4 (2) | C44—C43—C42 | 119.1 (3) |
C15—C14—N1 | 117.8 (2) | C44—C43—H43 | 120.4 |
C13—C14—N1 | 119.8 (2) | C42—C43—H43 | 120.5 |
C16—C15—C14 | 117.1 (2) | C43—C44—C45 | 119.4 (3) |
C16—C15—H15 | 121.4 | C43—C44—H44 | 120.2 |
C14—C15—H15 | 121.4 | C45—C44—H44 | 120.3 |
C15—C16—C17 | 123.1 (2) | C44—C45—C46 | 119.3 (3) |
C15—C16—N2 | 117.8 (2) | C44—C45—H45 | 120.4 |
C17—C16—N2 | 119.0 (2) | C46—C45—H45 | 120.3 |
C16—C17—C12 | 118.3 (2) | N6—C46—C45 | 120.4 (3) |
C16—C17—H17 | 120.8 | N6—C46—C41 | 116.0 (2) |
C12—C17—H17 | 120.8 | C45—C46—C41 | 123.5 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O31—H31···O8 | 0.87 | 1.65 | 2.512 (2) | 173 |
O41—H41···O7 | 0.93 | 1.71 | 2.631 (3) | 174 |
Experimental details
Crystal data | |
Chemical formula | [Cu(C7H3N2O6)(C6H7NO)2](C7H3N2O6) |
Mr | 704.02 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 9.870 (1), 12.181 (1), 12.732 (1) |
α, β, γ (°) | 95.29 (1), 108.68 (1), 91.80 (1) |
V (Å3) | 1440.9 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.84 |
Crystal size (mm) | 0.55 × 0.45 × 0.30 |
Data collection | |
Diffractometer | Siemens P4 diffractometer |
Absorption correction | ψ scan (XEMP; Siemens, 1990) |
Tmin, Tmax | 0.641, 0.777 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7697, 6556, 5266 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.111, 1.04 |
No. of reflections | 6556 |
No. of parameters | 433 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.52, −0.63 |
Computer programs: XSCANS (Siemens, 1994), XSCANS, SHELXS86 (Sheldrick, 1985), SHELXL97 (Sheldrick, 1997), ORTEP-3 (Farrugia, 1997), WinGX (Farrugia, 1999).
Cu1—O1 | 1.967 (2) | Cu1—O41 | 2.301 (2) |
Cu1—N5 | 1.972 (2) | O1—C11 | 1.274 (3) |
Cu1—N6 | 1.993 (2) | O2—C11 | 1.224 (3) |
Cu1—O31 | 2.000 (2) | ||
O1—Cu1—N5 | 92.43 (7) | N6—Cu1—O31 | 93.16 (7) |
O1—Cu1—N6 | 93.46 (7) | O1—Cu1—O41 | 96.50 (7) |
N5—Cu1—N6 | 173.81 (7) | N5—Cu1—O41 | 99.99 (7) |
O1—Cu1—O31 | 162.24 (7) | N6—Cu1—O41 | 77.45 (8) |
N5—Cu1—O31 | 81.75 (7) | O31—Cu1—O41 | 101.02 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
O31—H31···O8 | 0.87 | 1.65 | 2.512 (2) | 173 |
O41—H41···O7 | 0.93 | 1.71 | 2.631 (3) | 174 |
As a part of our systematic study of copper(II) carboxylate complexes with biologically interesting molecular ligands, we report here the crystal structure of the title compound, (I).
The asymmetric unit of (I) is made up of a [Cu(C6H7NO)2(C7H3N2O6)]+ cation and a C7H3N2O6− anion. The (2-pyridyl)methanol (also known as 2-pyridylcarbinol and abbreviated as 2-pycarb) ligand prefers a chelating bonding mode, in contrast with the bridging bonding mode found for (3-pyridyl)methanol (known as ronicol) in copper(II) complexes (Stachová et al., 2005). The 3,5-dinitrobenzoate ligand is monodentate, coordinating through a carboxylate O atom to give a complex cation with distorted square-pyramidal geometry and a CuO2N2O' coordination polyhedron. The basal plane is formed by carboxylate atom O1 from the coordinating 3,5-dinitrobenzoate ligand, atom O31 from one 2-pycarb ligand and two mutually trans pyridine atoms, N5 and N6, from two 2-pycarb ligands. The axial position of the coordination polyhedron is occupied by atom O41 of a 2-pycarb ligand, with a Cu—O distance longer than those in the basal plane (Table 1). The Cu1—O2 distance of 2.735 (2) Å is longer than the Cu1—O1 distance. Also, the C11—O2 distance is significantly shorter than the C11—O1 distance. These confirm that atom O2 is not involved in coordination and the ligand is monodentate. Atom Cu1 is displaced out of the basal plane by 0.120 (1) Å in the direction of the apical O41 atom. The 3,5-dinitrobenzoate anion is uncoordinated. With the exception of the C—O distances in the carboxylate groups, there are no significant differences in bond lengths or angles between the coordinated and uncoordinated anions and the values are comparable with those observed for bis(1,3-diaminopropane)-3,5-dinitrobenzoatocopper(II) 3,5-dinitrobenzoate (Sundberg et al., 1994).
Two very strong hydrogen bonds link atoms O7 and O8 of the uncoordinated 3,5-dinitrobenzoate anion to hydroxyl atoms H41 and H31 of the coordinated 2-pycarb ligands (Table 2), giving rise to ion-pair formation. Similar hydrogen bonding is reported for bis(triethanolamine)copper(II) diacetate (Krabbes et al., 1999). In the closely related benzoatobis(dimethylaminoetanol)copper(II) benzoate (Turpeinen et al., 1985), the carboxylate anions form hydrogen bonds with hydroxyl H atoms of the coordinated ligands. Similar but weaker hydrogen bonds are found in copper(II) complexes containing coordinated NH groups (Sen et al., 2000, Sundberg & Klinga, 1994).