metal-organic compounds
catena-Poly[[bis(pyridine-κN)cadmium]-di-μ2-thiocyanato-κ2N:S;κ2S:N]
aInstitut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Max-Eyth Strasse 2, D-24098 Kiel, Germany
*Correspondence e-mail: jboeckmann@ac.uni-kiel.de
The 2(C5H5N)2]n, consists of two crystallographically independent CdII cations, four thiocyanato anions and four pyridine ligands. The CdII atoms are each coordinated by four N atoms from two pyridine ligands and two thiocyanato anions, each in a mutually cis orientation, and by two S atoms from two adjacent thiocyanato anions within a slightly distorted octahedral coordination environment. The CdII atoms are μ-1,3-bridged via the thiocyanato anions into polymeric chains parallel to [001]. The CdII⋯CdII intrachain separations range between 5.9688 (6) and 6.0195 (6) Å, whereas the shortest CdII⋯CdII interchain separations are 7.8272 (7) and 8.6312 (6) Å.
of the title compound, [Cd(NCS)Related literature
For related structures see: Boeckmann & Näther (2010); Chen et al. (2005); Foner et al. (1975); Marsh et al. (2002); Porai-Koshits & Tishchenko (1960); Reller & Oswald (1986); Taniguchi et al. (1987); Zhu et al. (2008).
Experimental
Crystal data
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Refinement
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Data collection: X-AREA (Stoe & Cie, 2008); cell X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 2011); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536811009871/bt5493sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811009871/bt5493Isup2.hkl
The title compound was prepared by the reaction of 91.60 mg CdCl2 (0.50 mmol), 97.2 mg KSCN (1.00 mmol) and 20.2 µL pyridine (0.25 mmol) in 1.50 ml water at RT in a closed 3 ml snap cap vial. After one week colourless needles of the title compound were obtained.
All H atoms were located in difference map but were positioned with idealized geometry and were refined with Ueq(H) = 1.2 Ueq(C) using a riding model with C—H = 0.93 Å. The triclinic
of the title compound can be transformed into a monoclinic C-centered cell but the internal R-value of 0.271 clearly indicates that the crystal symmetry is triclinic. We also checked our model for higher symmetry using PLATON but without success. However, the structure can be solved in C2 but leads to very poor reliability factors and severe disorder. Finally ee also have checked if the crystal is pseudo-merohedrically twinned, which is not the case.Data collection: X-AREA (Stoe & Cie, 2008); cell
X-AREA (Stoe & Cie, 2008); data reduction: X-AREA (Stoe & Cie, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 2011); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).[Cd(NCS)2(C5H5N)2] | Z = 4 |
Mr = 386.76 | F(000) = 760 |
Triclinic, P1 | Dx = 1.809 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.8272 (4) Å | Cell parameters from 21468 reflections |
b = 8.6242 (4) Å | θ = 1.7–26.8° |
c = 23.705 (1) Å | µ = 1.82 mm−1 |
α = 84.890 (3)° | T = 293 K |
β = 89.520 (4)° | Needle, colourless |
γ = 63.070 (3)° | 0.15 × 0.11 × 0.07 mm |
V = 1420.06 (11) Å3 |
Stoe IPDS-2 diffractometer | 5998 independent reflections |
Radiation source: fine-focus sealed tube | 4613 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.071 |
ω scans | θmax = 26.8°, θmin = 1.7° |
Absorption correction: numerical (X-SHAPE and X-RED32; Stoe & Cie, 2008) | h = −9→9 |
Tmin = 0.779, Tmax = 0.874 | k = −10→10 |
21468 measured reflections | l = −29→29 |
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)] = 0.052 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.083 | H-atom parameters constrained |
S = 1.17 | w = 1/[σ2(Fo2) + (0.0176P)2 + 0.9412P] where P = (Fo2 + 2Fc2)/3 |
5998 reflections | (Δ/σ)max < 0.001 |
343 parameters | Δρmax = 0.60 e Å−3 |
0 restraints | Δρmin = −0.75 e Å−3 |
[Cd(NCS)2(C5H5N)2] | γ = 63.070 (3)° |
Mr = 386.76 | V = 1420.06 (11) Å3 |
Triclinic, P1 | Z = 4 |
a = 7.8272 (4) Å | Mo Kα radiation |
b = 8.6242 (4) Å | µ = 1.82 mm−1 |
c = 23.705 (1) Å | T = 293 K |
α = 84.890 (3)° | 0.15 × 0.11 × 0.07 mm |
β = 89.520 (4)° |
Stoe IPDS-2 diffractometer | 5998 independent reflections |
Absorption correction: numerical (X-SHAPE and X-RED32; Stoe & Cie, 2008) | 4613 reflections with I > 2σ(I) |
Tmin = 0.779, Tmax = 0.874 | Rint = 0.071 |
21468 measured reflections |
R[F2 > 2σ(F2)] = 0.052 | 0 restraints |
wR(F2) = 0.083 | H-atom parameters constrained |
S = 1.17 | Δρmax = 0.60 e Å−3 |
5998 reflections | Δρmin = −0.75 e Å−3 |
343 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 | ||
Cd1 | 0.55905 (5) | 0.97050 (4) | 0.375033 (15) | 0.03786 (11) | |
Cd2 | 0.44978 (6) | 0.99144 (5) | 0.125075 (15) | 0.03970 (11) | |
S1 | 0.8352 (2) | 0.93622 (19) | 0.45431 (6) | 0.0470 (3) | |
S3 | 0.2004 (2) | 0.9601 (2) | 0.20176 (6) | 0.0542 (4) | |
S2 | 0.8141 (2) | 0.9986 (2) | 0.29930 (6) | 0.0479 (3) | |
S4 | 0.1714 (2) | 1.0203 (2) | 0.04890 (7) | 0.0542 (4) | |
N1 | 0.6266 (7) | 1.0543 (6) | 0.5514 (2) | 0.0483 (11) | |
N3 | 0.3481 (7) | 0.9946 (6) | 0.3040 (2) | 0.0501 (12) | |
N2 | 0.6584 (7) | 0.9716 (6) | 0.1968 (2) | 0.0512 (12) | |
N11 | 0.4113 (6) | 1.2780 (5) | 0.37531 (19) | 0.0424 (10) | |
N21 | 0.7184 (7) | 0.6634 (5) | 0.3729 (2) | 0.0452 (11) | |
N31 | 0.2874 (7) | 1.2985 (6) | 0.1265 (2) | 0.0494 (12) | |
N41 | 0.5944 (7) | 0.6842 (6) | 0.1253 (2) | 0.0511 (12) | |
C1 | 0.7117 (7) | 1.0078 (6) | 0.5111 (2) | 0.0371 (11) | |
C3 | 0.2885 (7) | 0.9809 (6) | 0.2618 (2) | 0.0380 (11) | |
C2 | 0.7225 (7) | 0.9828 (6) | 0.2393 (2) | 0.0382 (11) | |
C4 | 0.2834 (8) | 1.0002 (6) | −0.0110 (2) | 0.0386 (11) | |
C11 | 0.3248 (9) | 1.3573 (7) | 0.4204 (3) | 0.0548 (15) | |
H11 | 0.3199 | 1.2890 | 0.4524 | 0.066* | |
C13 | 0.2505 (10) | 1.6376 (7) | 0.3758 (3) | 0.0653 (18) | |
H13 | 0.1991 | 1.7580 | 0.3764 | 0.078* | |
C14 | 0.3353 (10) | 1.5601 (8) | 0.3289 (3) | 0.0614 (17) | |
H14 | 0.3396 | 1.6272 | 0.2964 | 0.074* | |
C15 | 0.4150 (9) | 1.3809 (7) | 0.3299 (3) | 0.0538 (14) | |
H15 | 0.4738 | 1.3290 | 0.2976 | 0.065* | |
C21 | 0.8169 (9) | 0.5864 (7) | 0.3292 (3) | 0.0543 (15) | |
H21 | 0.8185 | 0.6566 | 0.2972 | 0.065* | |
C22 | 0.9167 (10) | 0.4081 (8) | 0.3286 (3) | 0.0624 (17) | |
H22 | 0.9840 | 0.3597 | 0.2969 | 0.075* | |
C23 | 0.9157 (9) | 0.3043 (8) | 0.3745 (3) | 0.0623 (17) | |
H23 | 0.9842 | 0.1835 | 0.3751 | 0.075* | |
C24 | 0.8136 (11) | 0.3782 (8) | 0.4199 (3) | 0.0664 (18) | |
H24 | 0.8091 | 0.3092 | 0.4518 | 0.080* | |
C25 | 0.7165 (10) | 0.5588 (7) | 0.4175 (3) | 0.0561 (15) | |
H25 | 0.6466 | 0.6094 | 0.4486 | 0.067* | |
C31 | 0.2529 (10) | 1.3725 (8) | 0.1749 (3) | 0.0601 (16) | |
H31 | 0.3017 | 1.3017 | 0.2086 | 0.072* | |
C33 | 0.0767 (10) | 1.6554 (8) | 0.1281 (4) | 0.0691 (19) | |
H33 | 0.0063 | 1.7757 | 0.1287 | 0.083* | |
C34 | 0.1113 (11) | 1.5804 (8) | 0.0782 (3) | 0.075 (2) | |
H34 | 0.0647 | 1.6488 | 0.0439 | 0.090* | |
C35 | 0.2159 (10) | 1.4025 (8) | 0.0794 (3) | 0.0636 (17) | |
H35 | 0.2377 | 1.3525 | 0.0453 | 0.076* | |
C41 | 0.6102 (10) | 0.6087 (8) | 0.0777 (3) | 0.0619 (17) | |
H41 | 0.5715 | 0.6788 | 0.0435 | 0.074* | |
C42 | 0.6816 (11) | 0.4304 (9) | 0.0770 (3) | 0.074 (2) | |
H42 | 0.6885 | 0.3819 | 0.0430 | 0.088* | |
C43 | 0.7418 (10) | 0.3267 (8) | 0.1266 (4) | 0.0678 (19) | |
H43 | 0.7921 | 0.2061 | 0.1270 | 0.081* | |
C44 | 0.7273 (12) | 0.4020 (9) | 0.1756 (4) | 0.075 (2) | |
H44 | 0.7653 | 0.3340 | 0.2102 | 0.090* | |
C45 | 0.6555 (10) | 0.5800 (8) | 0.1730 (3) | 0.0624 (17) | |
H45 | 0.6494 | 0.6303 | 0.2066 | 0.075* | |
C32 | 0.1479 (12) | 1.5493 (8) | 0.1769 (4) | 0.074 (2) | |
H32 | 0.1254 | 1.5965 | 0.2116 | 0.088* | |
C12 | 0.2420 (10) | 1.5359 (8) | 0.4219 (3) | 0.0677 (19) | |
H12 | 0.1810 | 1.5863 | 0.4541 | 0.081* | |
N4 | 0.3589 (8) | 0.9870 (7) | −0.0535 (2) | 0.0531 (12) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cd1 | 0.0446 (2) | 0.03687 (19) | 0.0315 (2) | −0.01765 (16) | 0.00348 (18) | −0.00516 (15) |
Cd2 | 0.0456 (3) | 0.0426 (2) | 0.0309 (2) | −0.01997 (17) | 0.00095 (18) | −0.00324 (16) |
S1 | 0.0417 (8) | 0.0603 (8) | 0.0370 (8) | −0.0204 (6) | 0.0045 (6) | −0.0103 (6) |
S3 | 0.0585 (10) | 0.0841 (10) | 0.0350 (8) | −0.0451 (8) | 0.0040 (7) | −0.0085 (7) |
S2 | 0.0482 (8) | 0.0707 (9) | 0.0340 (8) | −0.0345 (7) | 0.0035 (6) | −0.0085 (6) |
S4 | 0.0474 (9) | 0.0867 (10) | 0.0348 (8) | −0.0355 (8) | 0.0032 (7) | −0.0087 (7) |
N1 | 0.050 (3) | 0.062 (3) | 0.039 (3) | −0.030 (2) | 0.005 (2) | −0.007 (2) |
N3 | 0.053 (3) | 0.068 (3) | 0.036 (3) | −0.033 (2) | 0.001 (2) | −0.007 (2) |
N2 | 0.051 (3) | 0.069 (3) | 0.037 (3) | −0.031 (2) | −0.003 (2) | −0.004 (2) |
N11 | 0.042 (3) | 0.043 (2) | 0.039 (3) | −0.0169 (19) | −0.001 (2) | −0.0019 (18) |
N21 | 0.052 (3) | 0.040 (2) | 0.043 (3) | −0.020 (2) | 0.000 (2) | −0.0059 (19) |
N31 | 0.052 (3) | 0.044 (2) | 0.050 (3) | −0.020 (2) | 0.001 (2) | −0.003 (2) |
N41 | 0.050 (3) | 0.043 (2) | 0.056 (3) | −0.018 (2) | 0.003 (3) | −0.002 (2) |
C1 | 0.038 (3) | 0.033 (2) | 0.040 (3) | −0.018 (2) | −0.003 (2) | 0.003 (2) |
C3 | 0.037 (3) | 0.037 (2) | 0.037 (3) | −0.014 (2) | 0.006 (2) | −0.002 (2) |
C2 | 0.035 (3) | 0.037 (2) | 0.042 (3) | −0.016 (2) | 0.009 (2) | −0.001 (2) |
C4 | 0.040 (3) | 0.039 (2) | 0.039 (3) | −0.019 (2) | −0.008 (2) | −0.001 (2) |
C11 | 0.060 (4) | 0.049 (3) | 0.047 (3) | −0.017 (3) | 0.007 (3) | −0.004 (2) |
C13 | 0.064 (4) | 0.034 (3) | 0.086 (5) | −0.014 (3) | −0.007 (4) | 0.001 (3) |
C14 | 0.069 (4) | 0.048 (3) | 0.066 (4) | −0.028 (3) | −0.006 (3) | 0.014 (3) |
C15 | 0.057 (4) | 0.052 (3) | 0.048 (4) | −0.021 (3) | 0.004 (3) | 0.002 (2) |
C21 | 0.063 (4) | 0.049 (3) | 0.050 (4) | −0.024 (3) | 0.007 (3) | −0.009 (3) |
C22 | 0.067 (4) | 0.051 (3) | 0.069 (5) | −0.023 (3) | 0.011 (3) | −0.023 (3) |
C23 | 0.055 (4) | 0.044 (3) | 0.082 (5) | −0.016 (3) | −0.006 (3) | −0.013 (3) |
C24 | 0.089 (5) | 0.045 (3) | 0.059 (4) | −0.027 (3) | −0.006 (4) | 0.005 (3) |
C25 | 0.072 (4) | 0.050 (3) | 0.043 (3) | −0.024 (3) | 0.002 (3) | −0.005 (2) |
C31 | 0.071 (4) | 0.051 (3) | 0.054 (4) | −0.024 (3) | −0.005 (3) | −0.006 (3) |
C33 | 0.066 (4) | 0.046 (3) | 0.093 (6) | −0.023 (3) | 0.001 (4) | −0.008 (4) |
C34 | 0.081 (5) | 0.052 (4) | 0.073 (5) | −0.018 (3) | −0.009 (4) | 0.015 (3) |
C35 | 0.074 (4) | 0.055 (4) | 0.052 (4) | −0.021 (3) | −0.001 (3) | −0.001 (3) |
C41 | 0.075 (4) | 0.048 (3) | 0.052 (4) | −0.018 (3) | 0.004 (3) | −0.007 (3) |
C42 | 0.080 (5) | 0.063 (4) | 0.072 (5) | −0.025 (4) | 0.010 (4) | −0.025 (4) |
C43 | 0.062 (4) | 0.048 (3) | 0.090 (6) | −0.024 (3) | 0.005 (4) | 0.002 (3) |
C44 | 0.091 (6) | 0.058 (4) | 0.068 (5) | −0.029 (4) | −0.006 (4) | 0.012 (3) |
C45 | 0.074 (5) | 0.052 (3) | 0.057 (4) | −0.026 (3) | −0.008 (3) | 0.001 (3) |
C32 | 0.093 (6) | 0.050 (4) | 0.074 (5) | −0.027 (4) | 0.006 (4) | −0.019 (3) |
C12 | 0.076 (5) | 0.046 (3) | 0.064 (5) | −0.011 (3) | 0.004 (4) | −0.011 (3) |
N4 | 0.054 (3) | 0.076 (3) | 0.035 (3) | −0.035 (2) | 0.007 (2) | −0.008 (2) |
Cd1—N3 | 2.298 (5) | C13—H13 | 0.9300 |
Cd1—N1i | 2.317 (5) | C14—C15 | 1.378 (8) |
Cd1—N11 | 2.365 (4) | C14—H14 | 0.9300 |
Cd1—N21 | 2.367 (4) | C15—H15 | 0.9300 |
Cd1—S2 | 2.7508 (15) | C21—C22 | 1.375 (8) |
Cd1—S1 | 2.7715 (16) | C21—H21 | 0.9300 |
Cd2—N4ii | 2.303 (5) | C22—C23 | 1.349 (10) |
Cd2—N2 | 2.309 (5) | C22—H22 | 0.9300 |
Cd2—N41 | 2.363 (4) | C23—C24 | 1.361 (9) |
Cd2—N31 | 2.366 (4) | C23—H23 | 0.9300 |
Cd2—S3 | 2.7416 (16) | C24—C25 | 1.385 (8) |
Cd2—S4 | 2.7503 (17) | C24—H24 | 0.9300 |
S1—C1 | 1.647 (5) | C25—H25 | 0.9300 |
S3—C3 | 1.646 (6) | C31—C32 | 1.371 (9) |
S2—C2 | 1.642 (6) | C31—H31 | 0.9300 |
S4—C4 | 1.643 (6) | C33—C32 | 1.360 (11) |
N1—C1 | 1.156 (6) | C33—C34 | 1.365 (11) |
N1—Cd1i | 2.317 (5) | C33—H33 | 0.9300 |
N3—C3 | 1.144 (7) | C34—C35 | 1.371 (9) |
N2—C2 | 1.159 (7) | C34—H34 | 0.9300 |
N11—C11 | 1.329 (7) | C35—H35 | 0.9300 |
N11—C15 | 1.342 (7) | C41—C42 | 1.379 (8) |
N21—C21 | 1.326 (7) | C41—H41 | 0.9300 |
N21—C25 | 1.332 (7) | C42—C43 | 1.358 (11) |
N31—C35 | 1.318 (8) | C42—H42 | 0.9300 |
N31—C31 | 1.329 (8) | C43—C44 | 1.360 (11) |
N41—C45 | 1.324 (8) | C43—H43 | 0.9300 |
N41—C41 | 1.331 (8) | C44—C45 | 1.370 (9) |
C4—N4 | 1.153 (7) | C44—H44 | 0.9300 |
C11—C12 | 1.378 (8) | C45—H45 | 0.9300 |
C11—H11 | 0.9300 | C32—H32 | 0.9300 |
C13—C14 | 1.357 (10) | C12—H12 | 0.9300 |
C13—C12 | 1.360 (10) | N4—Cd2ii | 2.303 (5) |
N3—Cd1—N1i | 95.37 (17) | C14—C13—H13 | 120.6 |
N3—Cd1—N11 | 90.26 (17) | C12—C13—H13 | 120.6 |
N1i—Cd1—N11 | 91.19 (16) | C13—C14—C15 | 119.2 (6) |
N3—Cd1—N21 | 90.51 (17) | C13—C14—H14 | 120.4 |
N1i—Cd1—N21 | 91.07 (16) | C15—C14—H14 | 120.4 |
N11—Cd1—N21 | 177.54 (15) | N11—C15—C14 | 122.9 (6) |
N3—Cd1—S2 | 92.60 (12) | N11—C15—H15 | 118.6 |
N1i—Cd1—S2 | 172.02 (13) | C14—C15—H15 | 118.6 |
N11—Cd1—S2 | 88.36 (11) | N21—C21—C22 | 123.3 (6) |
N21—Cd1—S2 | 89.27 (12) | N21—C21—H21 | 118.3 |
N3—Cd1—S1 | 175.47 (12) | C22—C21—H21 | 118.3 |
N1i—Cd1—S1 | 89.01 (13) | C23—C22—C21 | 119.1 (6) |
N11—Cd1—S1 | 90.83 (12) | C23—C22—H22 | 120.4 |
N21—Cd1—S1 | 88.23 (12) | C21—C22—H22 | 120.4 |
S2—Cd1—S1 | 83.03 (4) | C22—C23—C24 | 119.3 (6) |
N4ii—Cd2—N2 | 94.30 (17) | C22—C23—H23 | 120.3 |
N4ii—Cd2—N41 | 91.31 (18) | C24—C23—H23 | 120.3 |
N2—Cd2—N41 | 91.26 (18) | C23—C24—C25 | 118.4 (6) |
N4ii—Cd2—N31 | 91.68 (17) | C23—C24—H24 | 120.8 |
N2—Cd2—N31 | 90.34 (17) | C25—C24—H24 | 120.8 |
N41—Cd2—N31 | 176.50 (16) | N21—C25—C24 | 123.2 (6) |
N4ii—Cd2—S3 | 174.04 (13) | N21—C25—H25 | 118.4 |
N2—Cd2—S3 | 91.52 (13) | C24—C25—H25 | 118.4 |
N41—Cd2—S3 | 87.27 (13) | N31—C31—C32 | 122.4 (7) |
N31—Cd2—S3 | 89.57 (12) | N31—C31—H31 | 118.8 |
N4ii—Cd2—S4 | 92.06 (14) | C32—C31—H31 | 118.8 |
N2—Cd2—S4 | 173.51 (13) | C32—C33—C34 | 118.1 (6) |
N41—Cd2—S4 | 89.88 (14) | C32—C33—H33 | 120.9 |
N31—Cd2—S4 | 88.19 (13) | C34—C33—H33 | 120.9 |
S3—Cd2—S4 | 82.16 (5) | C33—C34—C35 | 118.8 (7) |
C1—S1—Cd1 | 103.53 (19) | C33—C34—H34 | 120.6 |
C3—S3—Cd2 | 101.98 (18) | C35—C34—H34 | 120.6 |
C2—S2—Cd1 | 101.04 (17) | N31—C35—C34 | 123.6 (6) |
C4—S4—Cd2 | 101.36 (19) | N31—C35—H35 | 118.2 |
C1—N1—Cd1i | 152.4 (4) | C34—C35—H35 | 118.2 |
C3—N3—Cd1 | 161.5 (4) | N41—C41—C42 | 122.6 (6) |
C2—N2—Cd2 | 163.6 (4) | N41—C41—H41 | 118.7 |
C11—N11—C15 | 116.7 (5) | C42—C41—H41 | 118.7 |
C11—N11—Cd1 | 122.2 (4) | C43—C42—C41 | 119.1 (7) |
C15—N11—Cd1 | 121.1 (4) | C43—C42—H42 | 120.5 |
C21—N21—C25 | 116.7 (5) | C41—C42—H42 | 120.5 |
C21—N21—Cd1 | 123.0 (4) | C42—C43—C44 | 119.0 (6) |
C25—N21—Cd1 | 120.3 (4) | C42—C43—H43 | 120.5 |
C35—N31—C31 | 117.2 (5) | C44—C43—H43 | 120.5 |
C35—N31—Cd2 | 121.2 (4) | C43—C44—C45 | 118.7 (7) |
C31—N31—Cd2 | 121.4 (4) | C43—C44—H44 | 120.7 |
C45—N41—C41 | 117.1 (5) | C45—C44—H44 | 120.7 |
C45—N41—Cd2 | 121.6 (4) | N41—C45—C44 | 123.6 (7) |
C41—N41—Cd2 | 121.3 (4) | N41—C45—H45 | 118.2 |
N1—C1—S1 | 178.5 (4) | C44—C45—H45 | 118.2 |
N3—C3—S3 | 179.1 (5) | C33—C32—C31 | 119.8 (7) |
N2—C2—S2 | 179.7 (5) | C33—C32—H32 | 120.1 |
N4—C4—S4 | 178.8 (5) | C31—C32—H32 | 120.1 |
N11—C11—C12 | 123.2 (6) | C13—C12—C11 | 119.2 (6) |
N11—C11—H11 | 118.4 | C13—C12—H12 | 120.4 |
C12—C11—H11 | 118.4 | C11—C12—H12 | 120.4 |
C14—C13—C12 | 118.8 (5) | C4—N4—Cd2ii | 162.1 (4) |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, −y+2, −z. |
Experimental details
Crystal data | |
Chemical formula | [Cd(NCS)2(C5H5N)2] |
Mr | 386.76 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 7.8272 (4), 8.6242 (4), 23.705 (1) |
α, β, γ (°) | 84.890 (3), 89.520 (4), 63.070 (3) |
V (Å3) | 1420.06 (11) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.82 |
Crystal size (mm) | 0.15 × 0.11 × 0.07 |
Data collection | |
Diffractometer | Stoe IPDS2 diffractometer |
Absorption correction | Numerical (X-SHAPE and X-RED32; Stoe & Cie, 2008) |
Tmin, Tmax | 0.779, 0.874 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 21468, 5998, 4613 |
Rint | 0.071 |
(sin θ/λ)max (Å−1) | 0.634 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.052, 0.083, 1.17 |
No. of reflections | 5998 |
No. of parameters | 343 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.60, −0.75 |
Computer programs: X-AREA (Stoe & Cie, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 2011).
Acknowledgements
We gratefully acknowledge financial support by the DFG (project number NA 720/3–1) and the State of Schleswig–Holstein. We thank Professor Dr Wolfgang Bensch for the opportunity to use of his experimental facility.
References
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The structure determination of the title compound was performed as a part of a project on the synthesis of new one-dimensional coordination compounds (Boeckmann & Näther, 2010). Within this project we have reacted cadmium(II)chloride with potassium(I)thiocyanate and pyridine in water, which leads to the phase pure formation of catena-poly[bis(µ2-thiocyanato-N, S)-bis(pyridine-N)cadmium(II)].
The title compound crystallizes in the centrosymmetric triclinic space group P1 with four formula units in the unit cell. In the crystal structure each of the two crystallographically independent cadmium atoms is surrounded by four N-atoms of two pyridine ligands and two thiocyanato anions, each in mutually cis orientation, and by two S-atoms of two adjacent thiocyanato anions in a slightly distorted octahedral geometry (Fig. 1 and Tab. 1). The thiocyanato anions bridge the metal cations forming one-dimensional chains (Fig. 2), which elongate along the crystallographic c axis. These chains are arranged in a staggered form and further linked by weak S···S interactions into layers which are located in the ac plane (Fig. 3). A compound of similar composition [Cd(NCS)2(pyridine)2]n has already been described (Taniguchi et al., 1987) and reported to crystallize in the centrosymmetric triclinic space group P1 with six formula units in the unit cell. However, Marsh et al. (2002) found that the triclinic cell can be transformed to a C-centered monoclinic cell with Z = 12. It must be noted that in both cases only unit-cell parameters but no atomic coordinates are reported. Similiar one-dimensional coordination polymers with different transition metals have also been reported (Chen et al. (2005); Foner et al. (1975); Porai-Koshits & Tishchenko (1960); Reller & Oswald (1986); Zhu et al. (2008).