Bis{[2-(dimethyl­amino)­phen­yl](trimethyl­sil­yl)meth­yl}cadmium

Li, M.

doi:10.1107/S1600536812001079

metal-organic compounds

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ISSN: 2056-9890

Volume 68| Part 2| February 2012| Page m166

doi:10.1107/S1600536812001079

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Bis{[2-(dimethylamino)phenyl](trimethylsilyl)methyl}cadmium

Min Li ^a ^*

^aDepartment of Biochemistry, Changzhi University, Shanxi, People's Republic of China
^*Correspondence e-mail: limin0081.student@sina.com

(Received 24 December 2011; accepted 10 January 2012; online 18 January 2012)

In the crystal structure of the title compound, [Cd(C₁₂H₂₀NSi)₂], the Cd^II cation is coordinated by two N and two C atoms within an irregular polyhedron. The four Cd—X (X = C, N) bond lengths are in the range 2.166 (4)–2.513 (4) Å.

Related literature

For structures of related Cd–alkyl and Cd–aryl complexes, see: Schmidbaur et al. (1981 ). For the synthesis of related compounds, see: Tong et al. (2011 ).

Experimental

Crystal data

[Cd(C₁₂H₂₀NSi)₂]
M_r = 525.16
Triclinic, $[P \overline 1]$
a = 9.341 (6) Å
b = 11.011 (5) Å
c = 13.605 (8) Å
α = 87.80 (4)°
β = 88.31 (3)°
γ = 77.30 (5)°
V = 1363.7 (13) Å³
Z = 2
Mo Kα radiation
μ = 0.90 mm⁻¹
T = 230 K
0.40 × 0.30 × 0.30 mm

Data collection

Bruker SMART APEX CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ) T_min = 0.715, T_max = 0.774
5641 measured reflections
4701 independent reflections
4067 reflections with I > 2σ(I)
R_int = 0.015

Refinement

R[F² > 2σ(F²)] = 0.041
wR(F²) = 0.086
S = 1.09
4701 reflections
280 parameters
H atoms treated by a mixture of independent and constrained refinement
Δρ_max = 0.60 e Å⁻³
Δρ_min = −0.24 e Å⁻³

Data collection: SMART (Siemens, 1996 ); cell refinement: SAINT (Siemens, 1996); data reduction: SAINT; 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: SHELXL97.

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536812001079/nc2262sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536812001079/nc2262Isup2.hkl

checkCIF report

Comment top

Although several Cd complexes were reported Cd-alkyl or Cd-aryl complexes are still rare (Schmidbaur, et al., 1981). For the synthesis of such complexes the corresponding lithium compounds are useful reactands (Tong, et al., 2011). In the course of synthesizing new Cd complexes we obtained crystals of the title compound which were characterized by single crystal X-ray diffraction.

In the crystal structure of the title compound the Cd(II) cation are 4-fold coordinated by two nitrogen and two carbon atoms. The Cd–C bond lengths amount to 2.166 (4)(Cd—C1) and 2.169 (3)(Cd—C13)Å, and the Cd–N bond lengths are 2.503 (3) Å (Cd—N2) and 2.513 (4) Å(Cd—N1). The C1- Cd1—C13 bond angle is 167.3 (1)°) and the coordination environment around the Cd cations can be described as a irregular polyhedron.fragment.

Related literature top

For structures of related Cd–alkyl and Cd–aryl complexes see: Schmidbaur et al. (1981). For the synthesis of related compounds, see: Tong et al. (2011).

Experimental top

All manipulations were carried out under argon using standard Schlenk techniques. A solution of 2-dimethylamino-R-trimethylsilylbenzyl-Li (0.43 g, 0.2 mmol in 20 ml hexane) was slowly added to a stirred suspension of CdCl₂ (0.13 g, 0.1 mmol) in hexane (ca 10 ml) at ca 273 K. The resulting mixture was slowly warmed to room temperature and stirred for an additional 5 h to give a white precipitate of LiCl. The mixture was filtered and the filtrate was carefully concentrated in vacuum to give colorless crystal of the title compound.

Computing details top

Data collection: SMART (Siemens, 1996); cell refinement: SAINT (Siemens, 1996); data reduction: SAINT (Siemens, 1996); 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: SHELXL97 (Sheldrick, 2008).

Figures top

Fig. 1. Crystal structure of the title compound with labelling and displacement ellipsoids drawn at the 50% probability level.

Bis{[2-(dimethylamino)phenyl](trimethylsilyl)methyl}cadmium top

Crystal data top

[Cd(C₁₂H₂₀NSi)₂]	Z = 2
M_r = 525.16	F(000) = 548
Triclinic, P1	D_x = 1.279 Mg m⁻³
a = 9.341 (6) Å	Mo Kα radiation, λ = 0.71073 Å
b = 11.011 (5) Å	Cell parameters from 3359 reflections
c = 13.605 (8) Å	θ = 2.3–27.7°
α = 87.80 (4)°	µ = 0.90 mm⁻¹
β = 88.31 (3)°	T = 230 K
γ = 77.30 (5)°	Stick, colorless
V = 1363.7 (13) Å³	0.40 × 0.30 × 0.30 mm

Data collection top

Bruker SMART APEX CCD diffractometer	4701 independent reflections
Radiation source: fine-focus sealed tube	4067 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.015
phi and ω scans	θ_max = 25.0°, θ_min = 1.5°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −10→11
T_min = 0.715, T_max = 0.774	k = −12→13
5641 measured reflections	l = −16→12

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)] = 0.041	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.086	H atoms treated by a mixture of independent and constrained refinement
S = 1.09	w = 1/[σ²(F_o²) + (0.0331P)² + 0.7748P] where P = (F_o² + 2F_c²)/3
4701 reflections	(Δ/σ)_max = 0.001
280 parameters	Δρ_max = 0.60 e Å⁻³
0 restraints	Δρ_min = −0.24 e Å⁻³

Crystal data top

[Cd(C₁₂H₂₀NSi)₂]	γ = 77.30 (5)°
M_r = 525.16	V = 1363.7 (13) Å³
Triclinic, P1	Z = 2
a = 9.341 (6) Å	Mo Kα radiation
b = 11.011 (5) Å	µ = 0.90 mm⁻¹
c = 13.605 (8) Å	T = 230 K
α = 87.80 (4)°	0.40 × 0.30 × 0.30 mm
β = 88.31 (3)°

Data collection top

Bruker SMART APEX CCD diffractometer	4701 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	4067 reflections with I > 2σ(I)
T_min = 0.715, T_max = 0.774	R_int = 0.015
5641 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.041	0 restraints
wR(F²) = 0.086	H atoms treated by a mixture of independent and constrained refinement
S = 1.09	Δρ_max = 0.60 e Å⁻³
4701 reflections	Δρ_min = −0.24 e Å⁻³
280 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	U_iso*/U_eq
Cd	0.25382 (3)	0.99621 (2)	0.753955 (19)	0.04535 (11)
Si2	0.52432 (12)	0.76494 (10)	0.83055 (8)	0.0538 (3)
Si1	0.39659 (12)	1.23578 (11)	0.67425 (9)	0.0577 (3)
C13	0.3230 (4)	0.8293 (3)	0.8458 (3)	0.0447 (9)
N1	0.0380 (3)	1.1417 (3)	0.8311 (2)	0.0513 (8)
C14	0.2231 (4)	0.7414 (3)	0.8309 (3)	0.0455 (8)
C2	0.0830 (4)	1.2435 (3)	0.6727 (3)	0.0498 (9)
C3	0.0275 (5)	1.3305 (4)	0.5981 (3)	0.0672 (12)
H3	0.0867	1.3392	0.5433	0.081*
N2	0.1275 (3)	0.8475 (3)	0.6757 (2)	0.0566 (8)
C7	−0.0104 (4)	1.2342 (3)	0.7535 (3)	0.0506 (9)
C1	0.2359 (4)	1.1633 (4)	0.6616 (3)	0.0504 (9)
C16	0.1279 (5)	0.5640 (4)	0.8942 (4)	0.0749 (13)
H16	0.1255	0.5036	0.9436	0.090*
C15	0.2164 (4)	0.6483 (4)	0.9027 (3)	0.0589 (10)
H15	0.2735	0.6429	0.9581	0.071*
C19	0.1321 (4)	0.7478 (3)	0.7502 (3)	0.0523 (9)
C24	0.5904 (5)	0.6124 (4)	0.8995 (4)	0.0893 (16)
H24A	0.5656	0.6225	0.9681	0.134*
H24B	0.6950	0.5864	0.8913	0.134*
H24C	0.5445	0.5506	0.8742	0.134*
C6	−0.1501 (4)	1.3103 (4)	0.7582 (4)	0.0709 (13)
H6	−0.2100	1.3035	0.8130	0.085*
C21	−0.0221 (5)	0.9041 (5)	0.6421 (4)	0.0861 (15)
H21A	−0.0531	0.8494	0.5980	0.129*
H21B	−0.0220	0.9825	0.6087	0.129*
H21C	−0.0884	0.9173	0.6979	0.129*
C4	−0.1137 (6)	1.4044 (4)	0.6036 (4)	0.0870 (17)
H4	−0.1484	1.4603	0.5522	0.104*
C17	0.0436 (6)	0.5697 (4)	0.8127 (4)	0.0874 (16)
H17	−0.0150	0.5124	0.8057	0.105*
C18	0.0464 (5)	0.6608 (4)	0.7413 (4)	0.0758 (13)
H18	−0.0103	0.6643	0.6858	0.091*
C20	0.2220 (6)	0.8062 (5)	0.5898 (3)	0.0886 (15)
H20A	0.3199	0.7706	0.6109	0.133*
H20B	0.2234	0.8761	0.5457	0.133*
H20C	0.1846	0.7447	0.5566	0.133*
C8	0.1033 (5)	1.1934 (4)	0.9126 (3)	0.0740 (13)
H8A	0.1778	1.2344	0.8870	0.111*
H8B	0.1462	1.1272	0.9578	0.111*
H8C	0.0285	1.2522	0.9462	0.111*
C12	0.4331 (5)	1.2721 (5)	0.8026 (3)	0.0826 (14)
H12A	0.3529	1.3348	0.8268	0.124*
H12B	0.5221	1.3020	0.8034	0.124*
H12C	0.4430	1.1981	0.8438	0.124*
C22	0.5889 (5)	0.7379 (4)	0.6999 (3)	0.0772 (13)
H22A	0.5444	0.6760	0.6733	0.116*
H22B	0.6937	0.7096	0.6978	0.116*
H22C	0.5616	0.8143	0.6618	0.116*
C10	0.3806 (6)	1.3851 (5)	0.5994 (4)	0.104 (2)
H10A	0.3671	1.3700	0.5316	0.157*
H10B	0.4686	1.4156	0.6053	0.157*
H10C	0.2981	1.4458	0.6231	0.157*
C9	−0.0774 (5)	1.0803 (5)	0.8704 (3)	0.0813 (14)
H9A	−0.1421	1.1354	0.9135	0.122*
H9B	−0.0333	1.0054	0.9063	0.122*
H9C	−0.1321	1.0602	0.8170	0.122*
C23	0.6216 (5)	0.8796 (5)	0.8807 (4)	0.0860 (15)
H23A	0.5968	0.9567	0.8432	0.129*
H23B	0.7256	0.8472	0.8764	0.129*
H23C	0.5922	0.8937	0.9483	0.129*
C5	−0.2017 (6)	1.3948 (4)	0.6845 (5)	0.0915 (18)
H5	−0.2954	1.4452	0.6892	0.110*
C11	0.5620 (5)	1.1225 (5)	0.6282 (4)	0.0858 (15)
H11A	0.5848	1.0524	0.6736	0.129*
H11B	0.6437	1.1623	0.6224	0.129*
H11C	0.5424	1.0946	0.5650	0.129*
H13	0.321 (4)	0.850 (3)	0.912 (3)	0.054 (11)*
H1	0.248 (4)	1.144 (4)	0.599 (3)	0.064 (13)*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cd	0.04401 (16)	0.04002 (16)	0.05193 (18)	−0.01013 (11)	−0.00366 (11)	0.00682 (11)
Si2	0.0471 (6)	0.0523 (6)	0.0617 (7)	−0.0106 (5)	−0.0102 (5)	0.0088 (5)
Si1	0.0515 (7)	0.0571 (7)	0.0658 (7)	−0.0177 (5)	0.0040 (5)	0.0123 (5)
C13	0.053 (2)	0.0370 (19)	0.044 (2)	−0.0096 (16)	−0.0077 (17)	0.0026 (16)
N1	0.0472 (18)	0.057 (2)	0.0527 (19)	−0.0189 (15)	0.0022 (14)	0.0037 (15)
C14	0.049 (2)	0.0351 (19)	0.053 (2)	−0.0110 (16)	0.0063 (16)	−0.0040 (16)
C2	0.060 (2)	0.040 (2)	0.053 (2)	−0.0172 (18)	−0.0162 (18)	0.0036 (16)
C3	0.079 (3)	0.052 (2)	0.075 (3)	−0.026 (2)	−0.027 (2)	0.017 (2)
N2	0.053 (2)	0.065 (2)	0.054 (2)	−0.0168 (16)	−0.0082 (15)	−0.0029 (16)
C7	0.039 (2)	0.041 (2)	0.074 (3)	−0.0146 (16)	−0.0096 (18)	−0.0035 (18)
C1	0.058 (2)	0.051 (2)	0.043 (2)	−0.0147 (18)	0.0015 (18)	0.0098 (18)
C16	0.074 (3)	0.048 (3)	0.104 (4)	−0.021 (2)	0.015 (3)	0.011 (2)
C15	0.058 (3)	0.049 (2)	0.068 (3)	−0.0087 (19)	0.0056 (19)	0.0021 (19)
C19	0.045 (2)	0.046 (2)	0.068 (3)	−0.0129 (17)	−0.0020 (18)	−0.0080 (18)
C24	0.070 (3)	0.081 (3)	0.104 (4)	0.006 (3)	−0.008 (3)	0.034 (3)
C6	0.045 (2)	0.050 (3)	0.118 (4)	−0.008 (2)	−0.006 (2)	−0.010 (2)
C21	0.071 (3)	0.091 (4)	0.096 (4)	−0.016 (3)	−0.031 (3)	0.011 (3)
C4	0.092 (4)	0.051 (3)	0.119 (4)	−0.014 (3)	−0.063 (3)	0.022 (3)
C17	0.072 (3)	0.057 (3)	0.142 (5)	−0.035 (3)	0.004 (3)	−0.003 (3)
C18	0.065 (3)	0.066 (3)	0.105 (4)	−0.028 (2)	−0.015 (3)	−0.016 (3)
C20	0.088 (4)	0.122 (4)	0.062 (3)	−0.035 (3)	0.004 (3)	−0.018 (3)
C8	0.070 (3)	0.094 (3)	0.061 (3)	−0.024 (3)	0.000 (2)	−0.012 (2)
C12	0.067 (3)	0.096 (4)	0.093 (4)	−0.035 (3)	0.002 (3)	−0.009 (3)
C22	0.068 (3)	0.078 (3)	0.080 (3)	−0.004 (2)	0.001 (2)	0.006 (2)
C10	0.093 (4)	0.087 (4)	0.142 (5)	−0.045 (3)	−0.022 (3)	0.051 (4)
C9	0.073 (3)	0.090 (4)	0.087 (3)	−0.036 (3)	0.012 (2)	0.017 (3)
C23	0.065 (3)	0.099 (4)	0.102 (4)	−0.032 (3)	−0.024 (3)	0.003 (3)
C5	0.056 (3)	0.050 (3)	0.165 (6)	−0.001 (2)	−0.036 (3)	0.000 (3)
C11	0.062 (3)	0.098 (4)	0.096 (4)	−0.019 (3)	0.028 (2)	−0.001 (3)

Geometric parameters (Å, º) top

Cd—C1	2.166 (4)	C24—H24C	0.9600
Cd—C13	2.169 (3)	C6—C5	1.365 (7)
Cd—N2	2.503 (3)	C6—H6	0.9300
Cd—N1	2.513 (4)	C21—H21A	0.9600
Si2—C13	1.866 (4)	C21—H21B	0.9600
Si2—C23	1.868 (5)	C21—H21C	0.9600
Si2—C22	1.873 (5)	C4—C5	1.369 (8)
Si2—C24	1.881 (4)	C4—H4	0.9300
Si1—C1	1.864 (4)	C17—C18	1.373 (6)
Si1—C12	1.864 (5)	C17—H17	0.9300
Si1—C11	1.868 (5)	C18—H18	0.9300
Si1—C10	1.880 (5)	C20—H20A	0.9600
C13—C14	1.508 (5)	C20—H20B	0.9600
C13—H13	0.94 (4)	C20—H20C	0.9600
N1—C7	1.449 (5)	C8—H8A	0.9600
N1—C9	1.471 (5)	C8—H8B	0.9600
N1—C8	1.472 (5)	C8—H8C	0.9600
C14—C15	1.399 (5)	C12—H12A	0.9600
C14—C19	1.399 (5)	C12—H12B	0.9600
C2—C7	1.397 (5)	C12—H12C	0.9600
C2—C3	1.398 (5)	C22—H22A	0.9600
C2—C1	1.511 (6)	C22—H22B	0.9600
C3—C4	1.391 (7)	C22—H22C	0.9600
C3—H3	0.9300	C10—H10A	0.9600
N2—C19	1.460 (5)	C10—H10B	0.9600
N2—C20	1.468 (5)	C10—H10C	0.9600
N2—C21	1.477 (5)	C9—H9A	0.9600
C7—C6	1.388 (5)	C9—H9B	0.9600
C1—H1	0.89 (4)	C9—H9C	0.9600
C16—C17	1.371 (7)	C23—H23A	0.9600
C16—C15	1.382 (6)	C23—H23B	0.9600
C16—H16	0.9300	C23—H23C	0.9600
C15—H15	0.9300	C5—H5	0.9300
C19—C18	1.387 (5)	C11—H11A	0.9600
C24—H24A	0.9600	C11—H11B	0.9600
C24—H24B	0.9600	C11—H11C	0.9600

C1—Cd—C13	167.32 (14)	C5—C6—C7	121.7 (5)
C1—Cd—N2	109.85 (14)	C5—C6—H6	119.2
C13—Cd—N2	78.38 (13)	C7—C6—H6	119.2
C1—Cd—N1	77.71 (14)	N2—C21—H21A	109.5
C13—Cd—N1	110.90 (13)	N2—C21—H21B	109.5
N2—Cd—N1	100.60 (11)	H21A—C21—H21B	109.5
C13—Si2—C23	107.6 (2)	N2—C21—H21C	109.5
C13—Si2—C22	114.40 (19)	H21A—C21—H21C	109.5
C23—Si2—C22	107.7 (2)	H21B—C21—H21C	109.5
C13—Si2—C24	113.6 (2)	C5—C4—C3	120.0 (4)
C23—Si2—C24	107.3 (2)	C5—C4—H4	120.0
C22—Si2—C24	106.0 (2)	C3—C4—H4	120.0
C1—Si1—C12	114.8 (2)	C16—C17—C18	119.4 (4)
C1—Si1—C11	107.2 (2)	C16—C17—H17	120.3
C12—Si1—C11	107.4 (2)	C18—C17—H17	120.3
C1—Si1—C10	112.9 (2)	C17—C18—C19	121.4 (4)
C12—Si1—C10	106.3 (3)	C17—C18—H18	119.3
C11—Si1—C10	107.9 (3)	C19—C18—H18	119.3
C14—C13—Si2	116.9 (3)	N2—C20—H20A	109.5
C14—C13—Cd	109.5 (2)	N2—C20—H20B	109.5
Si2—C13—Cd	110.90 (18)	H20A—C20—H20B	109.5
C14—C13—H13	110 (2)	N2—C20—H20C	109.5
Si2—C13—H13	99 (2)	H20A—C20—H20C	109.5
Cd—C13—H13	110 (2)	H20B—C20—H20C	109.5
C7—N1—C9	113.9 (3)	N1—C8—H8A	109.5
C7—N1—C8	112.1 (3)	N1—C8—H8B	109.5
C9—N1—C8	109.4 (3)	H8A—C8—H8B	109.5
C7—N1—Cd	103.5 (2)	N1—C8—H8C	109.5
C9—N1—Cd	114.1 (3)	H8A—C8—H8C	109.5
C8—N1—Cd	103.3 (2)	H8B—C8—H8C	109.5
C15—C14—C19	116.6 (3)	Si1—C12—H12A	109.5
C15—C14—C13	119.0 (3)	Si1—C12—H12B	109.5
C19—C14—C13	124.3 (3)	H12A—C12—H12B	109.5
C7—C2—C3	116.7 (4)	Si1—C12—H12C	109.5
C7—C2—C1	123.7 (3)	H12A—C12—H12C	109.5
C3—C2—C1	119.6 (4)	H12B—C12—H12C	109.5
C4—C3—C2	121.9 (5)	Si2—C22—H22A	109.5
C4—C3—H3	119.1	Si2—C22—H22B	109.5
C2—C3—H3	119.1	H22A—C22—H22B	109.5
C19—N2—C20	112.1 (4)	Si2—C22—H22C	109.5
C19—N2—C21	113.6 (3)	H22A—C22—H22C	109.5
C20—N2—C21	109.0 (3)	H22B—C22—H22C	109.5
C19—N2—Cd	104.0 (2)	Si1—C10—H10A	109.5
C20—N2—Cd	103.4 (3)	Si1—C10—H10B	109.5
C21—N2—Cd	114.2 (3)	H10A—C10—H10B	109.5
C6—C7—C2	120.5 (4)	Si1—C10—H10C	109.5
C6—C7—N1	120.1 (4)	H10A—C10—H10C	109.5
C2—C7—N1	119.5 (3)	H10B—C10—H10C	109.5
C2—C1—Si1	118.9 (3)	N1—C9—H9A	109.5
C2—C1—Cd	109.3 (2)	N1—C9—H9B	109.5
Si1—C1—Cd	111.72 (19)	H9A—C9—H9B	109.5
C2—C1—H1	107 (3)	N1—C9—H9C	109.5
Si1—C1—H1	99 (3)	H9A—C9—H9C	109.5
Cd—C1—H1	110 (3)	H9B—C9—H9C	109.5
C17—C16—C15	119.7 (4)	Si2—C23—H23A	109.5
C17—C16—H16	120.2	Si2—C23—H23B	109.5
C15—C16—H16	120.2	H23A—C23—H23B	109.5
C16—C15—C14	122.4 (4)	Si2—C23—H23C	109.5
C16—C15—H15	118.8	H23A—C23—H23C	109.5
C14—C15—H15	118.8	H23B—C23—H23C	109.5
C18—C19—C14	120.4 (4)	C6—C5—C4	119.2 (5)
C18—C19—N2	120.3 (4)	C6—C5—H5	120.4
C14—C19—N2	119.3 (3)	C4—C5—H5	120.4
Si2—C24—H24A	109.5	Si1—C11—H11A	109.5
Si2—C24—H24B	109.5	Si1—C11—H11B	109.5
H24A—C24—H24B	109.5	H11A—C11—H11B	109.5
Si2—C24—H24C	109.5	Si1—C11—H11C	109.5
H24A—C24—H24C	109.5	H11A—C11—H11C	109.5
H24B—C24—H24C	109.5	H11B—C11—H11C	109.5

Experimental details

Crystal data
Chemical formula	[Cd(C₁₂H₂₀NSi)₂]
M_r	525.16
Crystal system, space group	Triclinic, P1
Temperature (K)	230
a, b, c (Å)	9.341 (6), 11.011 (5), 13.605 (8)
α, β, γ (°)	87.80 (4), 88.31 (3), 77.30 (5)
V (Å³)	1363.7 (13)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	0.90
Crystal size (mm)	0.40 × 0.30 × 0.30

Data collection
Diffractometer	Bruker SMART APEX CCD diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 1996)
T_min, T_max	0.715, 0.774
No. of measured, independent and observed [I > 2σ(I)] reflections	5641, 4701, 4067
R_int	0.015
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.041, 0.086, 1.09
No. of reflections	4701
No. of parameters	280
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.60, −0.24

Computer programs: SMART (Siemens, 1996), SAINT (Siemens, 1996), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

References

Schmidbaur, H., Costa, T. & Milewski-Mahrla, B. (1981). Chem. Ber. 114, 1428-1441. CrossRef CAS Web of Science Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Siemens (1996). SMART and SAINT. Siemens Analytical X-ray Instruments Inc., Madison, Wisconsin, USA. Google Scholar
Tong, H.-B., Li, M., Bai, S.-D., Yuan, S.-F., Chao, J.-B., Huang, S.-P. & Liu, D.-S. (2011). Dalton Trans. 40, 4236–4241. Web of Science CSD CrossRef CAS PubMed Google Scholar