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The crystal structure of the title complex, [Cu(C10H8N2)2{Pt(CN)4}]n, is built up by infinite neutral chains in which [Cu(bpy)2]2+ (bpy = 2,2′-bipyridine) complex cations are bridged by [Pt(CN)4]2− complex anions. Two bridging cyano groups of [Pt(CN)4]2− anions are in trans positions with Pt—C distances of 2.000 (9) Å. Nevertheless, the chains are not linear but zigzag, owing to the cis coordination of the cyano groups to the Cu atom [Cu—N = 2.243 (8) Å]. The remaining four coordination sites of the Cu atom are occupied by N atoms of two chelating bpy molecules at distances of 2.022 (4) and 2.161 (6) Å. Cu atoms lie on twofold rotation axes and Pt atoms on inversion centres.
Supporting information
CCDC reference: 618175
Key indicators
- Single-crystal X-ray study
- T = 220 K
- Mean (C-C) = 0.012 Å
- R factor = 0.052
- wR factor = 0.140
- Data-to-parameter ratio = 12.2
checkCIF/PLATON results
No syntax errors found
Alert level B
PLAT029_ALERT_3_B _diffrn_measured_fraction_theta_full Low ....... 0.96
Alert level C
RINTA01_ALERT_3_C The value of Rint is greater than 0.10
Rint given 0.103
PLAT020_ALERT_3_C The value of Rint is greater than 0.10 ......... 0.10
PLAT152_ALERT_1_C Supplied and Calc Volume s.u. Inconsistent ..... ?
PLAT342_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ... 12
Alert level G
ABSTM02_ALERT_3_G The ratio of expected to reported Tmax/Tmin(RR) is > 1.50
Tmin and Tmax reported: 0.049 0.444
Tmin and Tmax expected: 0.026 0.455
RR = 1.929
Please check that your absorption correction is appropriate.
0 ALERT level A = In general: serious problem
1 ALERT level B = Potentially serious problem
4 ALERT level C = Check and explain
1 ALERT level G = General alerts; check
1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
0 ALERT type 2 Indicator that the structure model may be wrong or deficient
5 ALERT type 3 Indicator that the structure quality may be low
0 ALERT type 4 Improvement, methodology, query or suggestion
0 ALERT type 5 Informative message, check
Data collection: EXPOSE in IPDS Software (Stoe & Cie, 1999); cell refinement: CELL in IPDS Software; data reduction: INTEGRATE in IPDS Software; program(s) used to solve structure: SHELXS86 (Sheldrick, 1985); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: DIAMOND (Brandenburg, 2000); software used to prepare material for publication: SHELXL97.
catena-Poly[[bis(2,2'-bipyridine-
κ2N,
N')copper(II)]-µ-cyano- dicyanoplatinate(II)-µ-cyano]
top
Crystal data top
[CuPt(C10H8N2)2(CN)4] | F(000) = 1292 |
Mr = 675.08 | Dx = 1.983 Mg m−3 |
Orthorhombic, Pbcn | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2n 2ab | Cell parameters from 6635 reflections |
a = 13.167 (2) Å | θ = 1.7–26.1° |
b = 11.055 (2) Å | µ = 7.15 mm−1 |
c = 15.534 (2) Å | T = 220 K |
V = 2261.2 (7) Å3 | Plate, blue |
Z = 4 | 0.60 × 0.57 × 0.11 mm |
Data collection top
Stoe IPDS diffractometer | 1923 independent reflections |
Radiation source: fine-focus sealed tube | 1377 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.103 |
φ scans | θmax = 25.1°, θmin = 2.7° |
Absorption correction: numerical (FACE in IPDS Software; Stoe & Cie, 1999) | h = −14→15 |
Tmin = 0.049, Tmax = 0.444 | k = −13→13 |
11207 measured reflections | l = −17→16 |
Refinement top
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.052 | H-atom parameters constrained |
wR(F2) = 0.140 | w = 1/[σ2(Fo2) + (0.0926P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.00 | (Δ/σ)max < 0.001 |
1923 reflections | Δρmax = 1.16 e Å−3 |
157 parameters | Δρmin = −2.65 e Å−3 |
0 restraints | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0077 (7) |
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 | |
Pt | 0.0000 | 0.0000 | 0.0000 | 0.0456 (3) | |
Cu | 0.0000 | 0.33069 (9) | 0.2500 | 0.0368 (3) | |
N3 | 0.1504 (3) | 0.3427 (4) | 0.2250 (3) | 0.0378 (11) | |
N4 | 0.0460 (4) | 0.4727 (5) | 0.3373 (4) | 0.0442 (12) | |
C35 | 0.1985 (5) | 0.2686 (6) | 0.1710 (5) | 0.0504 (16) | |
H35 | 0.1611 | 0.2091 | 0.1430 | 0.060* | |
C34 | 0.3010 (5) | 0.2761 (8) | 0.1550 (5) | 0.0602 (19) | |
H34 | 0.3327 | 0.2238 | 0.1166 | 0.072* | |
C31 | 0.2016 (5) | 0.4291 (6) | 0.2668 (4) | 0.0401 (14) | |
C41 | 0.1438 (5) | 0.5080 (5) | 0.3240 (4) | 0.0412 (15) | |
N1 | −0.0283 (5) | 0.1863 (6) | 0.1515 (5) | 0.0623 (17) | |
C32 | 0.3059 (6) | 0.4394 (8) | 0.2538 (5) | 0.0576 (19) | |
H32 | 0.3424 | 0.4981 | 0.2835 | 0.069* | |
N2 | 0.2339 (5) | 0.0480 (8) | 0.0203 (5) | 0.0664 (18) | |
C2 | 0.1492 (7) | 0.0283 (7) | 0.0112 (5) | 0.051 (2) | |
C42 | 0.1842 (7) | 0.6112 (7) | 0.3633 (5) | 0.063 (2) | |
H42 | 0.2509 | 0.6352 | 0.3531 | 0.076* | |
C45 | −0.0111 (7) | 0.5406 (10) | 0.3932 (7) | 0.074 (3) | |
H45 | −0.0777 | 0.5171 | 0.4042 | 0.089* | |
C33 | 0.3551 (5) | 0.3639 (8) | 0.1978 (6) | 0.066 (2) | |
H33 | 0.4246 | 0.3719 | 0.1888 | 0.079* | |
C44 | 0.0246 (10) | 0.6374 (10) | 0.4318 (6) | 0.089 (4) | |
H44 | −0.0169 | 0.6805 | 0.4694 | 0.106* | |
C1 | −0.0210 (5) | 0.1180 (7) | 0.0960 (6) | 0.057 (2) | |
C43 | 0.1223 (9) | 0.6760 (8) | 0.4175 (6) | 0.086 (3) | |
H43 | 0.1464 | 0.7455 | 0.4443 | 0.104* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
Pt | 0.0455 (4) | 0.0349 (4) | 0.0563 (4) | 0.00282 (14) | 0.01096 (13) | 0.00817 (12) |
Cu | 0.0319 (5) | 0.0308 (5) | 0.0477 (7) | 0.000 | −0.0017 (4) | 0.000 |
N3 | 0.034 (2) | 0.031 (2) | 0.048 (3) | −0.001 (2) | 0.0001 (18) | 0.000 (2) |
N4 | 0.048 (3) | 0.038 (2) | 0.046 (4) | 0.012 (2) | 0.003 (2) | 0.005 (3) |
C35 | 0.046 (3) | 0.041 (4) | 0.064 (5) | 0.007 (3) | 0.001 (3) | −0.006 (3) |
C34 | 0.053 (4) | 0.070 (5) | 0.058 (5) | 0.015 (3) | 0.010 (3) | −0.008 (4) |
C31 | 0.040 (3) | 0.039 (3) | 0.041 (4) | −0.005 (2) | −0.008 (2) | 0.007 (2) |
C41 | 0.054 (4) | 0.033 (3) | 0.037 (4) | −0.004 (2) | −0.012 (3) | 0.008 (2) |
N1 | 0.069 (4) | 0.049 (4) | 0.068 (5) | 0.004 (3) | 0.029 (3) | 0.003 (3) |
C32 | 0.039 (4) | 0.067 (5) | 0.066 (5) | −0.013 (3) | −0.009 (3) | 0.004 (4) |
N2 | 0.052 (4) | 0.064 (4) | 0.083 (5) | 0.006 (3) | 0.010 (3) | −0.021 (4) |
C2 | 0.058 (5) | 0.027 (3) | 0.068 (5) | 0.015 (4) | 0.012 (3) | −0.001 (3) |
C42 | 0.081 (5) | 0.042 (4) | 0.066 (6) | 0.004 (4) | −0.033 (4) | −0.007 (3) |
C45 | 0.087 (6) | 0.077 (6) | 0.059 (6) | 0.049 (5) | 0.014 (4) | 0.006 (5) |
C33 | 0.037 (3) | 0.085 (6) | 0.075 (6) | 0.000 (3) | 0.005 (3) | 0.006 (4) |
C44 | 0.125 (9) | 0.086 (7) | 0.056 (6) | 0.068 (7) | −0.014 (5) | −0.022 (5) |
C1 | 0.047 (3) | 0.040 (3) | 0.083 (6) | 0.002 (3) | 0.020 (3) | 0.020 (4) |
C43 | 0.133 (9) | 0.050 (5) | 0.075 (6) | 0.044 (6) | −0.046 (6) | −0.026 (4) |
Geometric parameters (Å, º) top
Pt—C2 | 1.997 (10) | C34—H34 | 0.9300 |
Pt—C2i | 1.997 (10) | C31—C32 | 1.391 (9) |
Pt—C1 | 2.000 (9) | C31—C41 | 1.459 (9) |
Pt—C1i | 2.000 (9) | C41—C42 | 1.400 (9) |
Cu—N3 | 2.022 (4) | N1—C1 | 1.150 (11) |
Cu—N3ii | 2.022 (4) | C32—C33 | 1.369 (12) |
Cu—N4 | 2.161 (6) | C32—H32 | 0.9300 |
Cu—N4ii | 2.161 (6) | N2—C2 | 1.145 (11) |
Cu—N1 | 2.243 (8) | C42—C43 | 1.373 (13) |
Cu—N1ii | 2.243 (8) | C42—H42 | 0.9300 |
N3—C35 | 1.332 (8) | C45—C44 | 1.315 (17) |
N3—C31 | 1.338 (8) | C45—H45 | 0.9300 |
N4—C41 | 1.361 (8) | C33—H33 | 0.9300 |
N4—C45 | 1.372 (11) | C44—C43 | 1.374 (16) |
C35—C34 | 1.376 (9) | C44—H44 | 0.9300 |
C35—H35 | 0.9300 | C43—H43 | 0.9300 |
C34—C33 | 1.375 (11) | | |
| | | |
C2—Pt—C2i | 180.0 | C33—C34—C35 | 117.6 (7) |
C2—Pt—C1 | 88.2 (3) | C33—C34—H34 | 121.2 |
C2i—Pt—C1 | 91.8 (3) | C35—C34—H34 | 121.2 |
C2—Pt—C1i | 91.8 (3) | N3—C31—C32 | 119.1 (7) |
C2i—Pt—C1i | 88.2 (3) | N3—C31—C41 | 117.3 (5) |
C1—Pt—C1i | 180.0 | C32—C31—C41 | 123.6 (6) |
N3—Cu—N3ii | 172.5 (3) | N4—C41—C42 | 121.8 (7) |
N3—Cu—N4 | 78.4 (2) | N4—C41—C31 | 114.5 (5) |
N3ii—Cu—N4 | 96.1 (2) | C42—C41—C31 | 123.7 (7) |
N3—Cu—N4ii | 96.1 (2) | C1—N1—Cu | 164.8 (6) |
N3ii—Cu—N4ii | 78.4 (2) | C33—C32—C31 | 120.6 (7) |
N4—Cu—N4ii | 86.8 (3) | C33—C32—H32 | 119.7 |
N3—Cu—N1 | 94.5 (2) | C31—C32—H32 | 119.7 |
N3ii—Cu—N1 | 90.9 (2) | N2—C2—Pt | 177.2 (8) |
N4—Cu—N1 | 172.7 (2) | C43—C42—C41 | 117.8 (9) |
N4ii—Cu—N1 | 92.4 (2) | C43—C42—H42 | 121.1 |
N3—Cu—N1ii | 90.9 (2) | C41—C42—H42 | 121.1 |
N3ii—Cu—N1ii | 94.5 (2) | C44—C45—N4 | 122.6 (10) |
N4—Cu—N1ii | 92.4 (2) | C44—C45—H45 | 118.7 |
N4ii—Cu—N1ii | 172.7 (2) | N4—C45—H45 | 118.7 |
N1—Cu—N1ii | 89.3 (4) | C32—C33—C34 | 119.5 (6) |
C35—N3—C31 | 120.3 (5) | C32—C33—H33 | 120.2 |
C35—N3—Cu | 123.1 (4) | C34—C33—H33 | 120.2 |
C31—N3—Cu | 116.6 (4) | C45—C44—C43 | 120.9 (8) |
C41—N4—C45 | 117.2 (8) | C45—C44—H44 | 119.6 |
C41—N4—Cu | 112.2 (4) | C43—C44—H44 | 119.6 |
C45—N4—Cu | 129.9 (6) | N1—C1—Pt | 176.9 (6) |
N3—C35—C34 | 122.9 (7) | C42—C43—C44 | 119.6 (8) |
N3—C35—H35 | 118.6 | C42—C43—H43 | 120.2 |
C34—C35—H35 | 118.6 | C44—C43—H43 | 120.2 |
Symmetry codes: (i) −x, −y, −z; (ii) −x, y, −z+1/2. |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
C35—H35···N1 | 0.93 | 2.51 | 3.136 (9) | 125 |
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