Bis(2,6-dimethyl-pyridine-κN)gold(I) tetra-chloridoaurate(III).

In the cation of the title compound, [Au(C(7)H(9)N)(2)][AuCl(4)], the Au(I) atom is two-coordinated in a linear arrangement by two N atoms from two 2,6-dimethyl-pyridine ligands. In the anion, the Au(III) atom has a virtually square-planar coordination geometry. The Au atoms both are located on centers of inversion. The crystal structure involves inter-molecular C-H⋯Cl hydrogen bonds.

Related literature

For related literature, see: Abbate et al. (2000 ▶); Adams & Strähle (1982 ▶); Ahmadi et al. (2008 ▶); Amani et al. (2008 ▶); Bjerne­mose et al. (2004 ▶); Hayoun et al. (2006 ▶); Hojjat Kashani et al. (2008 ▶); Hollis & Lippard (1983 ▶); McInnes et al. (1995 ▶); Yildirim et al. (2008 ▶).

Experimental

Crystal data

[Au(C7H9N)2][AuCl4]

M = 750.04

Monoclinic,

a = 17.773 (3) Å

b = 6.8395 (8) Å

c = 8.3728 (14) Å

β = 110.929 (12)°

V = 950.6 (3) Å3

Z = 2

Mo Kα radiation

μ = 15.97 mm−1

T = 298 (2) K

0.20 × 0.12 × 0.08 mm

Data collection

Bruker SMART APEX CCD area-detector diffractometer

Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.112, T max = 0.275

5473 measured reflections

1384 independent reflections

1123 reflections with I > 2σ(I)

R int = 0.092

Refinement

R[F 2 > 2σ(F 2)] = 0.044

wR(F 2) = 0.115

S = 1.20

1384 reflections

69 parameters

H-atom parameters constrained

Δρmax = 1.76 e Å−3

Δρmin = −2.1 e Å−3

Data collection: SMART (Bruker, 2007 ▶); cell refinement: SAINT (Bruker, 2007 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: WinGX (Farrugia, 1999 ▶).

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536808027876/hy2150sup1.cif

Structure factors: contains datablocks I. DOI: 10.1107/S1600536808027876/hy2150Isup2.hkl

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

[Au(C7H9N)2][AuCl4]	F(000) = 684
Mr = 750.04	Dx = 2.62 Mg m−3
Monoclinic, C2/m	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2y	Cell parameters from 971 reflections
a = 17.773 (3) Å	θ = 2.6–29.2°
b = 6.8395 (8) Å	µ = 15.97 mm−1
c = 8.3728 (14) Å	T = 298 K
β = 110.929 (12)°	Block, yellow
V = 950.6 (3) Å3	0.20 × 0.12 × 0.08 mm
Z = 2

Bruker SMART APEX CCD area-detector diffractometer	1123 reflections with I > 2σ(I)
φ and ω scans	Rint = 0.092
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	θmax = 29.2°, θmin = 2.6°
Tmin = 0.112, Tmax = 0.275	h = −23→24
5473 measured reflections	k = −9→8
1384 independent reflections	l = −11→11

Refinement on F2	0 restraints
Least-squares matrix: full	H-atom parameters constrained
R[F2 > 2σ(F2)] = 0.044	w = 1/[σ2(Fo2) + (0.0468P)2 + 5.4887P] where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.115	(Δ/σ)max = 0.004
S = 1.20	Δρmax = 1.76 e Å−3
1384 reflections	Δρmin = −2.1 e Å−3
69 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.

	x	y	z	Uiso*/Ueq
Au1	0	0.5	0.5	0.04157 (18)
Au2	0	0	0.5	0.0484 (2)
Cl1	0.13598 (17)	0	0.6416 (5)	0.0656 (9)
Cl2	0.0196 (2)	0	0.2445 (5)	0.0726 (10)
N1	0.1180 (5)	0.5	0.6531 (12)	0.044 (2)
C1	0.0754 (8)	0.5	0.8993 (16)	0.068 (4)
H1A	0.0803	0.6146	0.9684	0.081*
H1B	0.0238	0.5	0.8084	0.081*
C2	0.1398 (7)	0.5	0.8262 (15)	0.054 (3)
C3	0.2206 (8)	0.5	0.9317 (17)	0.071 (4)
H3	0.2353	0.5	1.05	0.085*
C4	0.2774 (8)	0.5	0.859 (2)	0.079 (5)
H4	0.3315	0.5	0.9288	0.095*
C5	0.2568 (8)	0.5	0.684 (2)	0.065 (3)
H5	0.2965	0.5	0.6361	0.078*
C6	0.1763 (6)	0.5	0.5816 (15)	0.047 (2)
C7	0.1497 (8)	0.5	0.3949 (19)	0.069 (4)
H7A	0.1702	0.386	0.3574	0.083*
H7B	0.0919	0.5	0.3473	0.083*

	U11	U22	U33	U12	U13	U23
Au1	0.0319 (3)	0.0531 (4)	0.0374 (3)	0	0.00961 (19)	0
Au2	0.0327 (3)	0.0502 (4)	0.0538 (3)	0	0.0053 (2)	0
Cl1	0.0327 (12)	0.071 (2)	0.077 (2)	0	−0.0006 (12)	0
Cl2	0.0641 (19)	0.090 (3)	0.0611 (18)	0	0.0195 (15)	0
N1	0.024 (3)	0.050 (5)	0.050 (5)	0	0.002 (3)	0
C1	0.060 (7)	0.097 (12)	0.045 (6)	0	0.017 (5)	0
C2	0.038 (5)	0.065 (8)	0.042 (5)	0	−0.006 (4)	0
C3	0.047 (6)	0.098 (12)	0.047 (6)	0	−0.008 (5)	0
C4	0.036 (6)	0.098 (13)	0.086 (10)	0	0.002 (6)	0
C5	0.045 (6)	0.075 (10)	0.078 (9)	0	0.026 (6)	0
C6	0.040 (5)	0.050 (6)	0.053 (6)	0	0.020 (4)	0
C7	0.057 (7)	0.088 (11)	0.074 (9)	0	0.037 (7)	0

Au1—N1	2.030 (8)	C2—C3	1.392 (15)
Au1—N1i	2.030 (8)	C3—C4	1.35 (2)
Au2—Cl1i	2.280 (3)	C3—H3	0.93
Au2—Cl1	2.280 (3)	C4—C5	1.38 (2)
Au2—Cl2	2.286 (4)	C4—H4	0.93
Au2—Cl2i	2.286 (4)	C5—C6	1.381 (17)
N1—C2	1.360 (15)	C5—H5	0.93
N1—C6	1.370 (14)	C6—C7	1.463 (18)
C1—C2	1.479 (18)	C7—H7A	0.96
C1—H1A	0.96	C7—H7B	0.96
C1—H1B	0.96
N1—Au1—N1i	180.0 (3)	C4—C3—C2	118.8 (12)
Cl1i—Au2—Cl1	180.00 (8)	C4—C3—H3	120.6
Cl1i—Au2—Cl2	90.05 (14)	C2—C3—H3	120.6
Cl1—Au2—Cl2	89.95 (14)	C3—C4—C5	121.4 (12)
Cl1i—Au2—Cl2i	89.95 (14)	C3—C4—H4	119.3
Cl1—Au2—Cl2i	90.05 (14)	C5—C4—H4	119.3
Cl2—Au2—Cl2i	180.00 (17)	C4—C5—C6	119.0 (12)
C2—N1—C6	119.6 (9)	C4—C5—H5	120.5
C2—N1—Au1	120.7 (8)	C6—C5—H5	120.5
C6—N1—Au1	119.7 (7)	N1—C6—C5	120.3 (11)
C2—C1—H1A	109.5	N1—C6—C7	117.4 (10)
C2—C1—H1B	109.5	C5—C6—C7	122.3 (11)
H1A—C1—H1B	109.5	C6—C7—H7A	109.5
N1—C2—C3	120.9 (12)	C6—C7—H7B	109.5
N1—C2—C1	118.2 (10)	H7A—C7—H7B	109.5
C3—C2—C1	120.9 (11)
C6—N1—C2—C3	0.000 (4)	C3—C4—C5—C6	0.000 (5)
Au1—N1—C2—C3	180.000 (4)	C2—N1—C6—C5	0.000 (4)
C6—N1—C2—C1	180.000 (4)	Au1—N1—C6—C5	180.000 (3)
Au1—N1—C2—C1	0.000 (3)	C2—N1—C6—C7	180.000 (3)
N1—C2—C3—C4	0.000 (6)	Au1—N1—C6—C7	0.000 (3)
C1—C2—C3—C4	180.000 (5)	C4—C5—C6—N1	0.000 (4)
C2—C3—C4—C5	0.000 (6)	C4—C5—C6—C7	180.000 (4)

D—H···A	D—H	H···A	D···A	D—H···A
C3—H3···Cl1ii	0.93	2.77	3.572 (14)	145

Au1—N1	2.030 (8)
Au2—Cl1	2.280 (3)
Au2—Cl2	2.286 (4)

Cl1i—Au2—Cl2	90.05 (14)
Cl1—Au2—Cl2	89.95 (14)

Symmetry code: (i) .

Table 2

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C3—H3⋯Cl1ii	0.93	2.77	3.572 (14)	145

Symmetry code: (ii) .