catena-Poly[{μ-cyanido-bis-[(4,4'-dimethyl-2,2'-bipyridine-κN,N')copper(I)]}-μ-cyanido-copper(I)-μ-cyanido].

In the title compound, [Cu(3)(CN)(3)(C(12)H(12)N(2))(2)], two 2,2'-bipyridine N,N'-chelated Cu(I) atoms are linked by a cyanide bridge that lies about a center of inversion; the Cu(I) atom exists in a tetra-hedral coordination geometry. This dinuclear entity is linked to another Cu(I) atom that lies on a twofold rotation axis by another cyanide bridge, these bridges giving rise to the formation of a linear chain motif.

Related literature

Some copper(I) cyanide adducts with 2,2′-bipyridine-like ligands that adopt chain structures in which the n class="Chemical">cyanide group functions as a bridge are tris­cyano-bis­(2,2′-biquinoline)tri­cop­per (Chesnut et al., 2001 ▶; Dessy et al., 1985 ▶), tetra­kiscyano­(2,2′-biquinoline)tetra­copper (Chesnut & Zubieta, 1998 ▶) and bis­cyano-(4,4′-diphenyl-2,2′-bipyridine)dicopper (Chesnut et al., 2001 ▶).

Experimental

Crystal data

[Cu3(CN)3(C12H12N2)2]

M = 637.15

Monoclinic,

a = 10.7196 (7) Å

b = 12.3700 (9) Å

c = 20.9182 (14) Å

β = 100.146 (1)°

V = 2730.4 (3) Å3

Z = 4

Mo Kα radiation

μ = 2.34 mm−1

T = 295 (2) K

0.30 × 0.20 × 0.16 mm

Data collection

Bruker SMART APEX diffractometer

Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.540, T max = 0.705

8685 measured reflections

3125 independent reflections

2491 reflections with I > 2σ(I)

R int = 0.024

Refinement

R[F 2 > 2σ(F 2)] = 0.038

wR(F 2) = 0.110

S = 1.03

3125 reflections

170 parameters

H-atom parameters constrained

Δρmax = 0.53 e Å−3

Δρmin = −0.21 e Å−3

Data collection: SMART (Bruker, 2002 ▶); cell refinement: SAINT (Bruker, 2002 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: X-SEED (Barbour, 2001 ▶); software used to prepare material for publication: publCIF (Westrip, 2008 ▶).

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536808022964/rk2103sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536808022964/rk2103Isup2.hkl

Additional supplementary materials: crystallographic information; 3D view; checkCIF report

[Cu3(CN)3(C12H12N2)2]	F000 = 1288
Mr = 637.15	Dx = 1.550 Mg m−3
Monoclinic, C2/c	Mo Kα radiation λ = 0.71073 Å
Hall symbol: -C 2yc	Cell parameters from 2750 reflections
a = 10.7196 (7) Å	θ = 2.5–27.0º
b = 12.3700 (9) Å	µ = 2.34 mm−1
c = 20.9182 (14) Å	T = 295 (2) K
β = 100.146 (1)º	Block, red
V = 2730.4 (3) Å3	0.30 × 0.20 × 0.16 mm
Z = 4

Bruker SMART APEX diffractometer	3125 independent reflections
Radiation source: fine-focus sealed tube	2491 reflections with I > 2σ(I)
Monochromator: graphite	Rint = 0.024
T = 295(2) K	θmax = 27.5º
φ and ω scans	θmin = 2.5º
Absorption correction: multi-scan(SADABS; Sheldrick, 1996)	h = −13→13
Tmin = 0.540, Tmax = 0.705	k = −16→15
8685 measured reflections	l = −16→27

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)] = 0.038	H-atom parameters constrained
wR(F2) = 0.110	w = 1/[σ2(Fo2) + (0.065P)2 + 0.8323P] where P = (Fo2 + 2Fc2)/3
S = 1.03	(Δ/σ)max = 0.001
3125 reflections	Δρmax = 0.53 e Å−3
170 parameters	Δρmin = −0.21 e Å−3
Primary atom site location: structure-invariant direct methods	Extinction correction: none

	x	y	z	Uiso*/Ueq	Occ. (<1)
Cu1	0.74268 (3)	0.41078 (2)	0.072850 (16)	0.04716 (14)
Cu2	0.5000	0.41827 (4)	0.2500	0.05469 (16)
N1	0.75592 (19)	0.54384 (16)	0.01065 (10)	0.0420 (5)
N2	0.92273 (18)	0.47469 (15)	0.11124 (9)	0.0406 (4)
N3	0.6442 (3)	0.41773 (18)	0.14085 (14)	0.0519 (6)	0.50
N4	0.5915 (2)	0.4184 (2)	0.18400 (12)	0.0502 (6)	0.50
N5	0.7489 (2)	0.28632 (17)	0.01721 (11)	0.0487 (6)	0.50
C3'	0.6442 (3)	0.41773 (18)	0.14085 (14)	0.0519 (6)	0.50
C4'	0.5915 (2)	0.4184 (2)	0.18400 (12)	0.0502 (6)	0.50
C5'	0.7489 (2)	0.28632 (17)	0.01721 (11)	0.0487 (6)	0.50
C1	0.6717 (3)	0.5725 (2)	−0.04135 (14)	0.0531 (6)
H1	0.5932	0.5384	−0.0485	0.064*
C2	0.6951 (3)	0.6501 (2)	−0.08494 (13)	0.0562 (7)
H2	0.6325	0.6680	−0.1200	0.067*
C3	0.8105 (3)	0.7011 (2)	−0.07670 (12)	0.0493 (6)
C4	0.8992 (2)	0.67121 (18)	−0.02273 (12)	0.0450 (6)
H4	0.9791	0.7030	−0.0154	0.054*
C5	0.8687 (2)	0.59363 (16)	0.02044 (12)	0.0385 (5)
C6	0.8409 (4)	0.7858 (2)	−0.12307 (15)	0.0699 (9)
H6A	0.8117	0.7623	−0.1669	0.105*
H6B	0.9309	0.7970	−0.1164	0.105*
H6C	0.7997	0.8523	−0.1156	0.105*
C7	0.9594 (2)	0.56084 (18)	0.07973 (11)	0.0391 (5)
C8	1.0699 (2)	0.61388 (19)	0.10154 (13)	0.0461 (6)
H8	1.0910	0.6739	0.0789	0.055*
C9	1.1516 (3)	0.5801 (2)	0.15691 (14)	0.0523 (6)
C10	1.1131 (3)	0.4918 (2)	0.18924 (14)	0.0559 (7)
H10	1.1634	0.4661	0.2270	0.067*
C11	1.0006 (3)	0.4430 (2)	0.16498 (13)	0.0516 (6)
H11	0.9766	0.3837	0.1873	0.062*
C12	1.2752 (3)	0.6366 (3)	0.18039 (18)	0.0781 (10)
H12A	1.3038	0.6203	0.2255	0.117*
H12B	1.2635	0.7133	0.1751	0.117*
H12C	1.3372	0.6125	0.1556	0.117*

	U11	U22	U33	U12	U13	U23
Cu1	0.0535 (2)	0.0446 (2)	0.0483 (2)	−0.01261 (12)	0.02281 (16)	−0.00397 (12)
Cu2	0.0494 (3)	0.0793 (4)	0.0406 (3)	0.000	0.0223 (2)	0.000
N1	0.0483 (11)	0.0401 (10)	0.0402 (12)	−0.0070 (8)	0.0149 (9)	−0.0055 (8)
N2	0.0469 (10)	0.0416 (10)	0.0376 (11)	−0.0031 (8)	0.0193 (9)	0.0007 (8)
N3	0.0530 (13)	0.0527 (14)	0.0522 (15)	−0.0098 (10)	0.0152 (12)	−0.0068 (10)
N4	0.0469 (13)	0.0700 (16)	0.0387 (13)	−0.0049 (10)	0.0214 (11)	−0.0049 (10)
N5	0.0560 (13)	0.0453 (12)	0.0514 (15)	−0.0154 (10)	0.0281 (11)	−0.0066 (9)
C3'	0.0530 (13)	0.0527 (14)	0.0522 (15)	−0.0098 (10)	0.0152 (12)	−0.0068 (10)
C4'	0.0469 (13)	0.0700 (16)	0.0387 (13)	−0.0049 (10)	0.0214 (11)	−0.0049 (10)
C5'	0.0560 (13)	0.0453 (12)	0.0514 (15)	−0.0154 (10)	0.0281 (11)	−0.0066 (9)
C1	0.0539 (15)	0.0559 (15)	0.0491 (16)	−0.0090 (12)	0.0082 (13)	−0.0071 (12)
C2	0.0655 (16)	0.0599 (16)	0.0415 (15)	0.0020 (13)	0.0047 (13)	0.0003 (12)
C3	0.0678 (16)	0.0432 (12)	0.0409 (14)	0.0022 (12)	0.0206 (13)	0.0002 (10)
C4	0.0525 (14)	0.0423 (13)	0.0451 (14)	−0.0055 (10)	0.0221 (11)	−0.0005 (10)
C5	0.0457 (12)	0.0370 (11)	0.0365 (13)	−0.0020 (9)	0.0175 (10)	−0.0035 (9)
C6	0.098 (2)	0.0630 (18)	0.0550 (19)	0.0058 (16)	0.0312 (17)	0.0142 (14)
C7	0.0456 (13)	0.0367 (11)	0.0400 (13)	−0.0031 (9)	0.0216 (11)	−0.0021 (9)
C8	0.0501 (14)	0.0424 (12)	0.0482 (15)	−0.0047 (10)	0.0153 (12)	0.0046 (10)
C9	0.0506 (14)	0.0537 (15)	0.0530 (17)	−0.0049 (11)	0.0103 (12)	−0.0013 (11)
C10	0.0554 (15)	0.0640 (17)	0.0473 (16)	0.0013 (13)	0.0066 (12)	0.0101 (13)
C11	0.0628 (16)	0.0484 (13)	0.0474 (15)	−0.0050 (12)	0.0201 (13)	0.0069 (12)
C12	0.0605 (18)	0.080 (2)	0.086 (2)	−0.0172 (16)	−0.0074 (17)	0.0093 (19)

Cu1—N1	2.118 (2)	C4—C5	1.395 (3)
Cu1—N2	2.109 (2)	C4—H4	0.9300
Cu1—N3	1.917 (3)	C5—C7	1.491 (3)
Cu1—N5	1.938 (2)	C6—H6A	0.9600
Cu2—N4	1.829 (2)	C6—H6B	0.9600
Cu2—N4i	1.829 (2)	C6—H6C	0.9600
N1—C1	1.333 (3)	C7—C8	1.361 (4)
N1—C5	1.340 (3)	C8—C9	1.388 (4)
N2—C11	1.336 (3)	C8—H8	0.9300
N2—C7	1.347 (3)	C9—C10	1.385 (4)
N3—N4	1.146 (4)	C9—C12	1.502 (4)
N5—C5'ii	1.154 (4)	C10—C11	1.364 (4)
C1—C2	1.377 (4)	C10—H10	0.9300
C1—H1	0.9300	C11—H11	0.9300
C2—C3	1.372 (4)	C12—H12A	0.9600
C2—H2	0.9300	C12—H12B	0.9600
C3—C4	1.392 (4)	C12—H12C	0.9600
C3—C6	1.503 (4)
N3—Cu1—N5	124.25 (9)	N1—C5—C4	121.7 (2)
N3—Cu1—N2	106.70 (9)	N1—C5—C7	116.1 (2)
N5—Cu1—N2	113.61 (9)	C4—C5—C7	122.2 (2)
N3—Cu1—N1	121.75 (9)	C3—C6—H6A	109.5
N5—Cu1—N1	103.61 (9)	C3—C6—H6B	109.5
N2—Cu1—N1	77.69 (7)	H6A—C6—H6B	109.5
N4—Cu2—C4'i	179.88 (15)	C3—C6—H6C	109.5
C4'i—Cu2—N4i	0.00 (12)	H6A—C6—H6C	109.5
C1—N1—C5	117.7 (2)	H6B—C6—H6C	109.5
C1—N1—Cu1	126.79 (17)	N2—C7—C8	121.9 (2)
C5—N1—Cu1	114.80 (16)	N2—C7—C5	114.8 (2)
C11—N2—C7	116.8 (2)	C8—C7—C5	123.3 (2)
C11—N2—Cu1	127.21 (16)	C7—C8—C9	121.3 (2)
C7—N2—Cu1	115.86 (16)	C7—C8—H8	119.4
N4—N3—Cu1	175.6 (3)	C9—C8—H8	119.4
N3—N4—Cu2	177.1 (3)	C10—C9—C8	116.5 (2)
C5'ii—N5—Cu1	178.3 (3)	C10—C9—C12	121.9 (3)
N5ii—N5—Cu1	178.3 (3)	C8—C9—C12	121.6 (3)
N1—C1—C2	123.4 (2)	C11—C10—C9	119.2 (3)
N1—C1—H1	118.3	C11—C10—H10	120.4
C2—C1—H1	118.3	C9—C10—H10	120.4
C3—C2—C1	120.2 (3)	N2—C11—C10	124.3 (2)
C3—C2—H2	119.9	N2—C11—H11	117.8
C1—C2—H2	119.9	C10—C11—H11	117.8
C2—C3—C4	116.8 (2)	C9—C12—H12A	109.5
C2—C3—C6	122.2 (3)	C9—C12—H12B	109.5
C4—C3—C6	120.9 (2)	H12A—C12—H12B	109.5
C3—C4—C5	120.2 (2)	C9—C12—H12C	109.5
C3—C4—H4	119.9	H12A—C12—H12C	109.5
C5—C4—H4	119.9	H12B—C12—H12C	109.5
N3—Cu1—N1—C1	−81.2 (2)	C1—N1—C5—C7	178.9 (2)
N5—Cu1—N1—C1	64.9 (2)	Cu1—N1—C5—C7	−9.9 (2)
N2—Cu1—N1—C1	176.6 (2)	C3—C4—C5—N1	1.8 (3)
N3—Cu1—N1—C5	108.54 (18)	C3—C4—C5—C7	−178.5 (2)
N5—Cu1—N1—C5	−105.30 (17)	C11—N2—C7—C8	−0.4 (3)
N2—Cu1—N1—C5	6.36 (15)	Cu1—N2—C7—C8	176.04 (18)
N3—Cu1—N2—C11	54.7 (2)	C11—N2—C7—C5	−179.5 (2)
N5—Cu1—N2—C11	−85.9 (2)	Cu1—N2—C7—C5	−3.0 (2)
N1—Cu1—N2—C11	174.5 (2)	N1—C5—C7—N2	8.7 (3)
N3—Cu1—N2—C7	−121.34 (17)	C4—C5—C7—N2	−171.0 (2)
N5—Cu1—N2—C7	98.09 (17)	N1—C5—C7—C8	−170.4 (2)
N1—Cu1—N2—C7	−1.55 (15)	C4—C5—C7—C8	10.0 (4)
C5—N1—C1—C2	0.0 (4)	N2—C7—C8—C9	1.3 (4)
Cu1—N1—C1—C2	−170.0 (2)	C5—C7—C8—C9	−179.7 (2)
N1—C1—C2—C3	1.1 (4)	C7—C8—C9—C10	−1.5 (4)
C1—C2—C3—C4	−0.7 (4)	C7—C8—C9—C12	178.5 (3)
C1—C2—C3—C6	179.7 (3)	C8—C9—C10—C11	1.0 (4)
C2—C3—C4—C5	−0.7 (4)	C12—C9—C10—C11	−179.1 (3)
C6—C3—C4—C5	179.0 (2)	C7—N2—C11—C10	−0.2 (4)
C1—N1—C5—C4	−1.4 (3)	Cu1—N2—C11—C10	−176.2 (2)
Cu1—N1—C5—C4	169.76 (17)	C9—C10—C11—N2	−0.1 (5)