catena-Poly[copper(I)-bis(μ-trifluoro­methane­sulfonato-κ2O:O′)-copper(I)-bis(μ-trimethyl trithio­phosphite)-κ2P:S;κ2S:P]

Strasser, C.E.; Cronje, S.; Raubenheimer, H.G.

doi:10.1107/S1600536808041809

metal-organic compounds

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ISSN: 2056-9890

Volume 65| Part 1| January 2009| Page m86

doi:10.1107/S1600536808041809

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catena-Poly[copper(I)-bis(μ-trifluoromethanesulfonato-κ²O:O′)-copper(I)-bis(μ-trimethyl trithiophosphite)-κ²P:S;κ²S:P]

Christoph E. Strasser,^a Stephanie Cronje ^a and Helgard G. Raubenheimer ^a ^*

^aDepartment of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
^*Correspondence e-mail: hgr@sun.ac.za

(Received 5 December 2008; accepted 9 December 2008; online 17 December 2008)

The title compound, [Cu₂(CF₃SO₃)₂(C₃H₉PS₃)₂]_n, crystallizes as infinite chains in which two trimethyl trithiophosphite ligands and two trifluoromethanesulfonate anions bridge the essentially tetrahedrally coordinated Cu^I ions in an alternating fashion. The P and one S atom of each trimethyl trithiophosphite ligand are employed for coordination. The molecular structure exhibits the rare motif of copper(I) bridged by two trifluoromethanesulfonate anions generating eight-membered rings.

Related literature

For related structures, see: Blue et al. (2006 ); Kataeva et al. (1995 , 2000 ); Knight & Keller (2006 ); Kursheva et al. (2003 ); Stibrany & Potenza (2007 ); Stibrany et al. (2006 ).

Experimental

Crystal data

[Cu₂(CF₃SO₃)₂(C₃H₉PS₃)₂]
M_r = 769.78
Monoclinic, P 2₁ /c
a = 8.8347 (15) Å
b = 18.306 (3) Å
c = 8.1731 (14) Å
β = 102.674 (3)°
V = 1289.6 (4) Å³
Z = 2
Mo Kα radiation
μ = 2.49 mm⁻¹
T = 100 (2) K
0.10 × 0.08 × 0.04 mm

Data collection

Bruker APEX CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2002 ) T_min = 0.789, T_max = 0.907
7349 measured reflections
2612 independent reflections
2425 reflections with I > 2σ(I)
R_int = 0.021

Refinement

R[F² > 2σ(F²)] = 0.030
wR(F²) = 0.075
S = 1.04
2612 reflections
148 parameters
H-atom parameters constrained
Δρ_max = 0.87 e Å⁻³
Δρ_min = −0.42 e Å⁻³

Table 1
Selected geometric parameters (Å, °)

Cu1—S1ⁱ	2.2943 (8)
Cu1—P1	2.1895 (7)
Cu1—O1	2.1466 (18)
Cu1—O2ⁱⁱ	2.065 (2)

P1—Cu1—S1ⁱ	121.88 (3)
O1—Cu1—S1ⁱ	105.35 (5)
O1—Cu1—P1	104.59 (6)
O2ⁱⁱ—Cu1—S1ⁱ	102.03 (7)
O2ⁱⁱ—Cu1—P1	123.32 (7)
O2ⁱⁱ—Cu1—O1	95.18 (8)
Symmetry codes: (i) -x, -y+1, -z+1; (ii) -x+1, -y+1, -z+1.

Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2003 ); 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: X-SEED.

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536808041809/lh2742sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536808041809/lh2742Isup2.hkl

checkCIF report

Comment top

The structure of the title compound (I), consists of chains of tetrahedrally coordinated Cu^I centres that are bridged by two P(SMe)₃ ligands in a κ²P:S-fashion, forming 6-membered rings in the chair conformation. Two trifluoromethanesulfonate anions each employ two oxygen atoms to bridge two copper atoms, yielding 8-membered rings. The copper atoms thus form spiro-junctions between the alternating 6- and 8-membered rings generated by the trithiophosphite and trifluoromethanesulfonate ligands; a point of symmetry is located in the centre of each ring.

The crystal structure of (I) therefore is related to compounds of the [CuX{P(SR)₃}]_n (R = alkyl, phenyl; X = Cl, Br, I, SCN) type which also show the same arrangement of 6-membered rings formed by two trithiophosphite ligands where the copper centres also form spiro-junctions to the 4-membered (8-membered) rings generated by two bridging (pseudo)halide (thiocyanate) anions (Kataeva et al., 1995; Kataeva et al., 2000). Cu—P and Cu—S bond lengths in (I) are shorter than in most halide analogues. This difference might be caused by the harder and more electron-withdrawing nature of the trifluoromethanesulfonate counter-anion. The average Cu—P bond length in the halide complexes is 2.22 Å and the average Cu—S distance 2.39 Å. An exception is the cluster formed by triisopropyltrithiophosphite with 4 CuCl units [Cu—P 2.207 (7) Å, Cu—S 2.185 (8) Å] that also might exert a similar electron-withdrawing effect on the ligand (Kursheva et al., 2003).

Tetrahydrofuran (thf), from which (I) was crystallized, does not act as a ligand towards Cu^I in the present structure. This behaviour of (I) is in contrast to the complex [Cu(CH₃CN)₂(PPh₃)₂]CF₃SO₃ which spontaneously yields crystals of [Cu(CF₃SO₃)(PPh₃)₂(thf)] when dissolved in thf (Knight & Keller, 2006). In the latter complex, the Cu—O(thf) bond is shorter [2.125 (2) Å] than the Cu—O(CF₃SO₃) bond [2.168 (2) Å] in (I).

Two copper centres bridged by two trifluoromethanesulfonate anions, each employing two oxygen atoms for coordination, is a very rare motif. Only two other structures of Cu^I (Stibrany et al., 2006; Stibrany & Potenza, 2007) and one of Cu^II (Blue et al., 2006) are known that exhibit such an arrangement. The former examples comprise tetrahedral Cu^I centres with the remaining sites occupied by phosphine or imine donors where the Cu—O distances of the former structure [2.111 (4) and 2.189 (4) Å] are comparable to those in (I) whereas such bonds are longer [2.336 (6) and 2.350 (7) Å] in the latter structure.

Related literature top

For related structures, see: Blue et al. (2006); Kataeva et al. (1995, 2000); Knight & Keller (2006); Kursheva et al. (2003); Stibrany & Potenza (2007); Stibrany et al. (2006).

Experimental top

trimethyl trithiophosphite (202 mg, 1.2 mmol) was dissolved in thf (20 ml) and [Cu(CH₃CN)₄]CF₃SO₃ (440 mg, 1.2 mmol) added. After 15 min. a slight turbidity in the colourless solution was observed and after 1.5 h all volatiles were removed in vacuo affording a yellowish oil. Trituration with diethyl ether (ca 20 ml) and twice with ca 20 ml toluene caused the oil to solidify furnishing the colourless microcrystalline product in quantitative yield. A suitable crystal for X-ray diffraction was grown from thf layered with pentane.

NMR (CD₃CN): ¹H (300 MHz): δ 2.31 p.p.m. (d, ³J_PH 12.1 Hz, ¹J_CH 155 Hz); ¹³C{¹H} (75 MHz): δ 14.2 p.p.m. (d, ²J_PC 10.1 Hz); ³¹P{¹H} (121 MHz): δ 142.1 p.p.m. (s).

IR (cm^-1): 2999 (CH₃), 2924 (CH₃), 1605, 1421 (CH₃), 1284 (CF₃SO₃), 1120 (CF₃SO₃), 1169 (CF₃SO₃), 1049, 1019, 962, 764, 734, 668, 626 and 577.

FAB-MS in nitrobenzyl alcohol matrix (m/z): 385 (10%, M+H), 401 (15).

Computing details top

Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2003); data reduction: SAINT (Bruker, 2003); 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: X-SEED (Barbour, 2001).

Figures top

Fig. 1. Part of an infinite chain formed by (I), unlabeled atoms are related by one unit cell translation along the a axis; ellipsoids are drawn at the 50% probability level. Symmetry operators: (i) = -x, -y + 1, -z + 1; (ii) = -x + 1, -y + 1, -z + 1.

catena-Poly[copper(I)-bis(µ-trifluoromethanesulfonato- κ²O:O')-copper(I)-bis(µ-trimethyl trithiophosphite)-κ²P:S;κ²S:P] top

Crystal data top

[Cu₂(CF₃SO₃)₂(C₃H₉PS₃)₂]	F(000) = 768
M_r = 769.78	D_x = 1.982 Mg m⁻³
Monoclinic, P2₁/c	Melting point: 413 K
Hall symbol: -P 2ybc	Mo Kα radiation, λ = 0.71073 Å
a = 8.8347 (15) Å	Cell parameters from 4358 reflections
b = 18.306 (3) Å	θ = 2.4–26.3°
c = 8.1731 (14) Å	µ = 2.49 mm⁻¹
β = 102.674 (3)°	T = 100 K
V = 1289.6 (4) Å³	Block, colourless
Z = 2	0.10 × 0.08 × 0.04 mm

Data collection top

Bruker APEX CCD area-detector diffractometer	2612 independent reflections
Radiation source: fine-focus sealed tube	2425 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.021
ω scans	θ_max = 26.4°, θ_min = 2.2°
Absorption correction: multi-scan (SADABS; Bruker, 2002)	h = −11→11
T_min = 0.789, T_max = 0.907	k = −14→22
7349 measured reflections	l = −9→10

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)] = 0.030	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.075	H-atom parameters constrained
S = 1.04	w = 1/[σ²(F_o²) + (0.0393P)² + 1.5175P] where P = (F_o² + 2F_c²)/3
2612 reflections	(Δ/σ)_max < 0.001
148 parameters	Δρ_max = 0.87 e Å⁻³
0 restraints	Δρ_min = −0.42 e Å⁻³

Crystal data top

[Cu₂(CF₃SO₃)₂(C₃H₉PS₃)₂]	V = 1289.6 (4) Å³
M_r = 769.78	Z = 2
Monoclinic, P2₁/c	Mo Kα radiation
a = 8.8347 (15) Å	µ = 2.49 mm⁻¹
b = 18.306 (3) Å	T = 100 K
c = 8.1731 (14) Å	0.10 × 0.08 × 0.04 mm
β = 102.674 (3)°

Data collection top

Bruker APEX CCD area-detector diffractometer	2612 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2002)	2425 reflections with I > 2σ(I)
T_min = 0.789, T_max = 0.907	R_int = 0.021
7349 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.030	0 restraints
wR(F²) = 0.075	H-atom parameters constrained
S = 1.04	Δρ_max = 0.87 e Å⁻³
2612 reflections	Δρ_min = −0.42 e Å⁻³
148 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 > 2σ(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
Cu1	0.20918 (3)	0.512402 (17)	0.47201 (4)	0.01851 (11)
P1	0.02869 (7)	0.58055 (3)	0.31859 (8)	0.01703 (15)
S1	−0.19119 (7)	0.52875 (3)	0.26779 (8)	0.01850 (14)
S2	0.03767 (8)	0.61564 (4)	0.07703 (8)	0.02558 (16)
S3	0.00504 (8)	0.68172 (3)	0.42847 (8)	0.02322 (16)
S4	0.54023 (7)	0.58664 (3)	0.66022 (8)	0.01807 (15)
F1	0.66632 (19)	0.70162 (9)	0.8235 (2)	0.0303 (4)
F2	0.5529 (3)	0.72252 (11)	0.5687 (2)	0.0546 (6)
F3	0.4170 (2)	0.70427 (11)	0.7523 (3)	0.0495 (5)
O1	0.4142 (2)	0.57889 (10)	0.5143 (2)	0.0236 (4)
O2	0.6913 (2)	0.57583 (11)	0.6216 (3)	0.0357 (5)
O3	0.5166 (2)	0.55310 (12)	0.8091 (2)	0.0346 (5)
C1	−0.3285 (3)	0.60237 (15)	0.2002 (4)	0.0255 (6)
H1A	−0.3181	0.6390	0.2895	0.038*
H1B	−0.4343	0.5827	0.1756	0.038*
H1C	−0.3073	0.6252	0.0991	0.038*
C2	0.2468 (3)	0.6205 (2)	0.1033 (4)	0.0350 (7)
H2A	0.2907	0.6501	0.2024	0.052*
H2B	0.2720	0.6430	0.0038	0.052*
H2C	0.2906	0.5712	0.1180	0.052*
C3	0.0397 (3)	0.65795 (15)	0.6490 (3)	0.0260 (6)
H3A	−0.0436	0.6259	0.6681	0.039*
H3B	0.0420	0.7025	0.7159	0.039*
H3C	0.1394	0.6326	0.6821	0.039*
C4	0.5454 (3)	0.68447 (15)	0.7022 (4)	0.0253 (6)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cu1	0.01952 (17)	0.01793 (18)	0.01786 (18)	0.00236 (11)	0.00363 (12)	0.00126 (12)
S1	0.0200 (3)	0.0165 (3)	0.0185 (3)	0.0003 (2)	0.0033 (2)	0.0018 (2)
S2	0.0240 (3)	0.0364 (4)	0.0163 (3)	−0.0004 (3)	0.0043 (3)	0.0077 (3)
S3	0.0312 (3)	0.0145 (3)	0.0231 (3)	0.0005 (3)	0.0041 (3)	0.0012 (2)
S4	0.0199 (3)	0.0153 (3)	0.0187 (3)	−0.0015 (2)	0.0036 (2)	−0.0016 (2)
P1	0.0196 (3)	0.0170 (3)	0.0146 (3)	0.0008 (2)	0.0039 (2)	0.0022 (2)
F1	0.0341 (9)	0.0235 (8)	0.0320 (9)	−0.0079 (7)	0.0045 (7)	−0.0098 (7)
F2	0.0967 (17)	0.0278 (10)	0.0348 (11)	−0.0160 (10)	0.0046 (11)	0.0099 (8)
F3	0.0342 (10)	0.0369 (11)	0.0778 (15)	0.0048 (8)	0.0130 (10)	−0.0267 (11)
O1	0.0255 (10)	0.0248 (10)	0.0189 (9)	−0.0059 (8)	0.0015 (7)	−0.0002 (7)
O2	0.0234 (10)	0.0304 (11)	0.0537 (14)	−0.0018 (8)	0.0095 (9)	−0.0214 (10)
O3	0.0457 (13)	0.0321 (11)	0.0218 (10)	−0.0161 (10)	−0.0014 (9)	0.0064 (9)
C1	0.0225 (13)	0.0222 (14)	0.0294 (15)	0.0042 (10)	0.0002 (11)	0.0080 (11)
C2	0.0248 (14)	0.056 (2)	0.0254 (15)	−0.0064 (14)	0.0072 (11)	0.0069 (14)
C3	0.0373 (15)	0.0226 (14)	0.0176 (13)	0.0004 (11)	0.0053 (11)	−0.0044 (11)
C4	0.0316 (14)	0.0176 (13)	0.0256 (14)	0.0007 (11)	0.0039 (11)	−0.0006 (11)

Geometric parameters (Å, º) top

Cu1—S1ⁱ	2.2943 (8)	S4—O3	1.419 (2)
Cu1—P1	2.1895 (7)	F1—C4	1.326 (3)
Cu1—O1	2.1466 (18)	F2—C4	1.308 (3)
Cu1—O2ⁱⁱ	2.065 (2)	F3—C4	1.338 (3)
P1—S1	2.1192 (9)	C1—H1A	0.9800
P1—S2	2.0941 (9)	C1—H1B	0.9800
P1—S3	2.0886 (10)	C1—H1C	0.9800
S1—C1	1.816 (3)	C2—H2A	0.9800
S2—C2	1.815 (3)	C2—H2B	0.9800
S3—C3	1.814 (3)	C2—H2C	0.9800
S4—C4	1.822 (3)	C3—H3A	0.9800
S4—O1	1.4490 (19)	C3—H3B	0.9800
S4—O2	1.451 (2)	C3—H3C	0.9800

P1—Cu1—S1ⁱ	121.88 (3)	F1—C4—S4	110.88 (19)
P1—S1—Cu1ⁱ	102.25 (3)	F2—C4—S4	111.7 (2)
S4—O1—Cu1	131.05 (11)	F3—C4—S4	109.64 (19)
S4—O2—Cu1ⁱⁱ	132.38 (13)	F1—C4—F3	107.7 (2)
O1—Cu1—S1ⁱ	105.35 (5)	F2—C4—F1	108.5 (2)
O1—Cu1—P1	104.59 (6)	F2—C4—F3	108.2 (2)
O2ⁱⁱ—Cu1—S1ⁱ	102.03 (7)	S1—C1—H1A	109.5
O2ⁱⁱ—Cu1—P1	123.32 (7)	S1—C1—H1B	109.5
O2ⁱⁱ—Cu1—O1	95.18 (8)	S1—C1—H1C	109.5
C1—S1—Cu1ⁱ	110.36 (10)	H1A—C1—H1B	109.5
S1—P1—Cu1	112.23 (4)	H1A—C1—H1C	109.5
S2—P1—Cu1	122.77 (4)	H1B—C1—H1C	109.5
S3—P1—Cu1	112.83 (4)	S2—C2—H2A	109.5
S2—P1—S1	100.09 (4)	S2—C2—H2B	109.5
S3—P1—S1	107.89 (4)	S2—C2—H2C	109.5
S3—P1—S2	99.29 (4)	H2A—C2—H2B	109.5
C1—S1—P1	104.48 (9)	H2A—C2—H2C	109.5
C2—S2—P1	98.73 (10)	H2B—C2—H2C	109.5
C3—S3—P1	101.75 (9)	S3—C3—H3A	109.5
O1—S4—O2	112.64 (13)	S3—C3—H3B	109.5
O3—S4—O1	115.63 (12)	S3—C3—H3C	109.5
O3—S4—O2	116.31 (14)	H3A—C3—H3B	109.5
O1—S4—C4	103.54 (12)	H3A—C3—H3C	109.5
O2—S4—C4	100.87 (13)	H3B—C3—H3C	109.5
O3—S4—C4	105.44 (13)

Cu1—P1—S1—Cu1ⁱ	47.73 (4)	O3—S4—O1—Cu1	−10.1 (2)
Cu1—P1—S1—C1	162.81 (10)	O3—S4—O2—Cu1ⁱⁱ	75.6 (2)
Cu1—P1—S2—C2	−30.47 (13)	C4—S4—O1—Cu1	−124.88 (16)
Cu1—P1—S3—C3	−36.26 (11)	C4—S4—O2—Cu1ⁱⁱ	−170.98 (18)
S1ⁱ—Cu1—P1—S1	−58.38 (5)	S1—P1—S2—C2	−155.34 (12)
S1ⁱ—Cu1—P1—S2	−177.61 (4)	S1—P1—S3—C3	88.30 (10)
S1ⁱ—Cu1—P1—S3	63.76 (5)	S2—P1—S1—C1	−65.38 (11)
S1ⁱ—Cu1—O1—S4	13.26 (16)	S2—P1—S3—C3	−167.85 (10)
P1—Cu1—O1—S4	142.85 (14)	S3—P1—S1—C1	37.90 (11)
S2—P1—S1—Cu1ⁱ	179.54 (3)	S3—P1—S2—C2	94.47 (12)
S3—P1—S1—Cu1ⁱ	−77.18 (4)	O1—S4—C4—F1	−173.61 (18)
O1—Cu1—P1—S1	−177.33 (6)	O1—S4—C4—F2	−52.4 (2)
O1—Cu1—P1—S2	63.44 (7)	O1—S4—C4—F3	67.5 (2)
O1—Cu1—P1—S3	−55.19 (6)	O2—S4—C4—F1	−56.9 (2)
O2ⁱⁱ—Cu1—P1—S1	76.24 (8)	O2—S4—C4—F2	64.3 (2)
O2ⁱⁱ—Cu1—P1—S2	−42.98 (9)	O2—S4—C4—F3	−175.7 (2)
O2ⁱⁱ—Cu1—P1—S3	−161.62 (8)	O3—S4—C4—F1	64.5 (2)
O2ⁱⁱ—Cu1—O1—S4	−90.74 (16)	O3—S4—C4—F2	−174.3 (2)
O1—S4—O2—Cu1ⁱⁱ	−61.2 (2)	O3—S4—C4—F3	−54.3 (2)
O2—S4—O1—Cu1	127.02 (15)

Symmetry codes: (i) −x, −y+1, −z+1; (ii) −x+1, −y+1, −z+1.

Experimental details

Crystal data
Chemical formula	[Cu₂(CF₃SO₃)₂(C₃H₉PS₃)₂]
M_r	769.78
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	100
a, b, c (Å)	8.8347 (15), 18.306 (3), 8.1731 (14)
β (°)	102.674 (3)
V (Å³)	1289.6 (4)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	2.49
Crystal size (mm)	0.10 × 0.08 × 0.04

Data collection
Diffractometer	Bruker APEX CCD area-detector diffractometer
Absorption correction	Multi-scan (SADABS; Bruker, 2002)
T_min, T_max	0.789, 0.907
No. of measured, independent and observed [I > 2σ(I)] reflections	7349, 2612, 2425
R_int	0.021
(sin θ/λ)_max (Å⁻¹)	0.625

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.030, 0.075, 1.04
No. of reflections	2612
No. of parameters	148
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.87, −0.42

Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001).

Selected geometric parameters (Å, º) top

Cu1—S1ⁱ	2.2943 (8)	P1—S2	2.0941 (9)
Cu1—P1	2.1895 (7)	P1—S3	2.0886 (10)
Cu1—O1	2.1466 (18)	S1—C1	1.816 (3)
Cu1—O2ⁱⁱ	2.065 (2)	S2—C2	1.815 (3)
P1—S1	2.1192 (9)	S3—C3	1.814 (3)

P1—Cu1—S1ⁱ	121.88 (3)	S2—P1—S1	100.09 (4)
O1—Cu1—S1ⁱ	105.35 (5)	S3—P1—S1	107.89 (4)
O1—Cu1—P1	104.59 (6)	S3—P1—S2	99.29 (4)
O2ⁱⁱ—Cu1—S1ⁱ	102.03 (7)	C1—S1—P1	104.48 (9)
O2ⁱⁱ—Cu1—P1	123.32 (7)	C2—S2—P1	98.73 (10)
O2ⁱⁱ—Cu1—O1	95.18 (8)	C3—S3—P1	101.75 (9)

Symmetry codes: (i) −x, −y+1, −z+1; (ii) −x+1, −y+1, −z+1.

Acknowledgements

We thank the National Research Foundation (NRF) of South Africa for financial support.

References

Barbour, L. J. (2001). J. Supramol. Chem. 1, 189–191. CrossRef CAS Google Scholar
Blue, E. D., Gunnoe, T. B., Petersen, J. L. & Boyle, P. D. (2006). J. Organomet. Chem. 691, 5988–5993. Web of Science CSD CrossRef CAS Google Scholar
Bruker (2002). SADABS and SMART. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2003). SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Kataeva, O. N., Krivolapov, D. B., Gubaidullin, A. T., Litvinov, I. A., Kursheva, L. I. & Katsyuba, S. A. (2000). J. Mol. Struct. 554, 127–140. Web of Science CSD CrossRef CAS Google Scholar
Kataeva, O. N., Litvinov, I. A., Naumov, V. A., Kursheva, L. I. & Batyeva, E. S. (1995). Inorg. Chem. 34, 5171–5174. CrossRef CAS Web of Science Google Scholar
Knight, D. A. & Keller, S. W. (2006). J. Chem. Crystallogr. 36, 531–542. Web of Science CSD CrossRef CAS Google Scholar
Kursheva, L. I., Kataeva, O. N., Gubaidullin, A. T., Khasyanzyanova, F. S., Vakhitov, E. V., Krivolapov, D. B. & Batyeva, E. S. (2003). Russ. J. Gen. Chem. 73, 1516–1521. Web of Science CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Stibrany, R. T. & Potenza, J. A. (2007). Private communication (Refcode: VIFSEJ). CCDC, Cambridge, England. Google Scholar
Stibrany, R. T., Schugar, H. J. & Potenza, J. A. (2006). Private communication (Refcode: CEJGEE). CCDC, Cambridge, England. Google Scholar

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