Bis{μ-5-(diethyl­amino)-2-[(2-oxidoeth­oxy)imino­meth­yl]phenolato}dicopper(II) acetone solvate

Dong, W.-K.; Chen, X.; He, X.-N.; Tang, X.-L.; Lv, Z.-W.

doi:10.1107/S1600536808024707

metal-organic compounds

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ISSN: 2056-9890

Volume 64| Part 9| September 2008| Page m1133

doi:10.1107/S1600536808024707

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Bis{μ-5-(diethylamino)-2-[(2-oxidoethoxy)iminomethyl]phenolato}dicopper(II) acetone solvate

Wen-Kui Dong,^a ^* Xiao Chen,^a Xue-Ni He,^a Xiao-Lu Tang ^a and Zhong-Wu Lv ^a

^aSchool of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, People's Republic of China
^*Correspondence e-mail: dongwk@mail.lzjtu.cn

(Received 29 July 2008; accepted 1 August 2008; online 6 August 2008)

The title complex, [Cu₂(C₁₃H₁₈N₂O₃)₂]·C₃H₆O, has been synthesized by the reaction of copper(II) acetate monohydrate with 5,5′-bis(diethylamino)-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol, where one of the N—O bonds of the ligand was cleaved during the reaction. The complex molecule has a μ-dialkoxo-bridged binuclear structure with both Cu^II centers exhibiting a square-planar coordination geometry.

Related literature

For related literature, see: Bu et al. (1990 ); Dong et al. (2007a ,b ); Sun et al. (2008 ); Zhang et al. (2007 ).

Experimental

Crystal data

[Cu₂(C₁₃H₁₈N₂O₃)₂]·C₃H₆O
M_r = 685.75
Monoclinic, P 2₁ /c
a = 20.633 (3) Å
b = 11.6045 (14) Å
c = 13.0738 (17) Å
β = 102.635 (2)°
V = 3054.6 (7) Å³
Z = 4
Mo Kα radiation
μ = 1.44 mm⁻¹
T = 298 (2) K
0.53 × 0.49 × 0.47 mm

Data collection

Bruker SMART 1000 CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ) T_min = 0.515, T_max = 0.550 (expected range = 0.475–0.507)
14726 measured reflections
5363 independent reflections
2967 reflections with I > 2σ(I)
R_int = 0.092

Refinement

R[F² > 2σ(F²)] = 0.075
wR(F²) = 0.229
S = 1.00
5363 reflections
385 parameters
H-atom parameters constrained
Δρ_max = 0.88 e Å⁻³
Δρ_min = −1.06 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: SHELXTL.

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536808024707/gk2162sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536808024707/gk2162Isup2.hkl

checkCIF report

Comment top

Several works have been devoted to synthesize and characterize transition metal complexes bearing a salen-type bisoxime ligand or its derivatives (Dong et al., 2007a; Dong et al., 2007b).

The title compound has been synthesized by the reaction of copper(II) acetate monohydrate with a salen-type bisoxime ligand, 5,5'-di(N,N'-diethylamino)-2,2' -[ethylenedioxybis(nitrilomethylidyne)]diphenol (H₂L¹). The catalytic action of Cu^II ions resulted in unexpected cleavage of one of the N—O bonds in the ligand H₂L¹ (Bu et al., 1990) giving a novel dialkoxo-bridged dinuclear complex with a Cu—O—Cu—O four-membered ring core, instead of the expected salen-type bisoxime Cu—N₂O₂ complex (Sun et al., 2008).

The title molecule has µ-dialkoxo bridged binuclear structure with both Cu^II centers tetra-coordinated, where oxime nitrogen atom, phenoxo oxygen atom and two bridging alkoxo oxygen atoms act as donors. The Cu₂O₂ core is formed by two Cu^II ions and two bridging alkoxo oxygen atoms with Cu—Cu separation of 3.0051 (12) Å. The dihedral angle between the two planes, O2—Cu2—O5 and O2—Cu1—O5, is 8.80 (4)°.

Related literature top

For related literature, see: Bu et al. (1990); Dong et al. (2007a,b); Sun et al. (2008); Zhang et al. (2007).

Experimental top

5, 5'-Di(N,N'-diethylamino)-2,2'- [ethylenedioxybis(nitrilomethylidyne)]diphenol (H₂L¹) was synthesized according to previously reported procedure (Zhang et al., 2007). A solution of copper(II) acetate monohydrate (20.0 mg, 0.1 mmol) in ethanol (15 ml) was added dropwise to a solution of H₂L¹ (44.3 mg, 0.1 mmol) in acetone (15 ml) at room temperature. The color of the mixing solution turned to brown immediately. The solution was stirred for 4 h at room temperature and then filtered. The filtrate was allowed to evaporate at room temperature for about three weeks and dark-brown prismatic single crystals suitable for X-ray crystallographic analysis were obtained. Anal. Calcd. for C₂₉H₄₂Cu₂N₄O₇ {[Cu₂(L²)₂]C₃H₆O} (%): C, 50.79; H, 6.17; N, 8.17; Cu, 18.53. Found: C, 50.61; H, 6.19; N, 8.01; Cu, 18.29. IR: νC=N, 1614 cm^-1 and νAr-O, 1235 cm^-1.

Computing details top

Data collection: SMART (Siemens, 1996); cell refinement: SMART (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: SHELXTL (Sheldrick, 2008).

Figures top

Fig. 1. The molecular structure of the title compound with atom numbering scheme. Displacement ellipsoids for non-hydrogen atoms are drawn at the 30% probability level.

Bis{µ-5-(diethylamino)-2-[(2-oxidoethoxy)iminomethyl]phenolato}dicopper(II) acetone solvate top

Crystal data top

[Cu₂(C₁₃H₁₈N₂O₃)₂]·C₃H₆O	F(000) = 1432
M_r = 685.75	D_x = 1.491 Mg m⁻³
Monoclinic, P2₁/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 2917 reflections
a = 20.633 (3) Å	θ = 2.4–22.9°
b = 11.6045 (14) Å	µ = 1.44 mm⁻¹
c = 13.0738 (17) Å	T = 298 K
β = 102.635 (2)°	Prismatic, dark-brown
V = 3054.6 (7) Å³	0.53 × 0.49 × 0.47 mm
Z = 4

Data collection top

Bruker SMART 1000 CCD diffractometer	5363 independent reflections
Radiation source: fine-focus sealed tube	2967 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.092
ϕ and ω scans	θ_max = 25.0°, θ_min = 2.0°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −23→24
T_min = 0.515, T_max = 0.550	k = −13→9
14726 measured reflections	l = −15→15

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)] = 0.075	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.229	H-atom parameters constrained
S = 1.00	w = 1/[σ²(F_o²) + (0.1245P)²] where P = (F_o² + 2F_c²)/3
5363 reflections	(Δ/σ)_max = 0.001
385 parameters	Δρ_max = 0.88 e Å⁻³
0 restraints	Δρ_min = −1.07 e Å⁻³

Crystal data top

[Cu₂(C₁₃H₁₈N₂O₃)₂]·C₃H₆O	V = 3054.6 (7) Å³
M_r = 685.75	Z = 4
Monoclinic, P2₁/c	Mo Kα radiation
a = 20.633 (3) Å	µ = 1.44 mm⁻¹
b = 11.6045 (14) Å	T = 298 K
c = 13.0738 (17) Å	0.53 × 0.49 × 0.47 mm
β = 102.635 (2)°

Data collection top

Bruker SMART 1000 CCD diffractometer	5363 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	2967 reflections with I > 2σ(I)
T_min = 0.515, T_max = 0.550	R_int = 0.092
14726 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.075	0 restraints
wR(F²) = 0.229	H-atom parameters constrained
S = 1.00	Δρ_max = 0.88 e Å⁻³
5363 reflections	Δρ_min = −1.07 e Å⁻³
385 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
Cu1	0.50062 (4)	0.85967 (8)	0.08317 (7)	0.0325 (3)
Cu2	0.40492 (4)	0.91965 (8)	0.21830 (7)	0.0350 (3)
N1	0.4892 (3)	0.7990 (5)	−0.0554 (5)	0.0362 (15)
N2	0.8064 (3)	0.8744 (7)	0.0240 (6)	0.061 (2)
N3	0.4087 (3)	1.0305 (6)	0.3279 (5)	0.0419 (16)
N4	0.0932 (4)	0.9250 (8)	0.2481 (7)	0.075 (3)
O1	0.4275 (2)	0.7535 (4)	−0.1126 (4)	0.0392 (13)
O2	0.4116 (2)	0.8328 (5)	0.0968 (4)	0.0412 (13)
O3	0.5922 (2)	0.8847 (4)	0.0975 (4)	0.0398 (13)
O4	0.4662 (2)	1.0969 (4)	0.3692 (4)	0.0447 (14)
O5	0.4970 (2)	0.9318 (4)	0.2158 (4)	0.0395 (13)
O6	0.3153 (2)	0.8842 (5)	0.2103 (4)	0.0456 (14)
O7	0.1481 (6)	0.5560 (10)	0.0993 (9)	0.154 (4)
C1	0.3732 (3)	0.8175 (7)	−0.0905 (6)	0.0398 (19)
H1A	0.3337	0.7991	−0.1433	0.048*
H1B	0.3822	0.8990	−0.0968	0.048*
C2	0.3591 (3)	0.7965 (7)	0.0148 (6)	0.042 (2)
H2A	0.3189	0.8373	0.0199	0.051*
H2B	0.3513	0.7149	0.0226	0.051*
C3	0.5347 (3)	0.7810 (6)	−0.1079 (6)	0.0386 (18)
H3	0.5222	0.7487	−0.1744	0.046*
C4	0.6025 (3)	0.8082 (7)	−0.0690 (6)	0.0389 (18)
C5	0.6286 (4)	0.8589 (7)	0.0283 (6)	0.0413 (19)
C6	0.6954 (4)	0.8808 (7)	0.0556 (7)	0.048 (2)
H6	0.7128	0.9147	0.1203	0.058*
C7	0.7386 (4)	0.8539 (8)	−0.0103 (7)	0.051 (2)
C8	0.7128 (4)	0.8060 (7)	−0.1067 (7)	0.050 (2)
H8	0.7405	0.7888	−0.1520	0.060*
C9	0.6464 (3)	0.7839 (7)	−0.1356 (6)	0.044 (2)
H9	0.6293	0.7518	−0.2012	0.053*
C10	0.8505 (4)	0.8597 (8)	−0.0509 (8)	0.064 (3)
H10A	0.8255	0.8780	−0.1209	0.077*
H10B	0.8868	0.9143	−0.0334	0.077*
C11	0.8781 (5)	0.7429 (9)	−0.0516 (8)	0.080 (3)
H11A	0.9047	0.7255	0.0165	0.120*
H11B	0.9051	0.7389	−0.1026	0.120*
H11C	0.8425	0.6882	−0.0690	0.120*
C12	0.8390 (5)	0.9014 (9)	0.1339 (8)	0.072 (3)
H12A	0.8152	0.8672	0.1827	0.087*
H12B	0.8847	0.8750	0.1506	0.087*
C13	0.8354 (6)	1.0267 (10)	0.1358 (10)	0.097 (4)
H13A	0.8504	1.0576	0.0769	0.146*
H13B	0.8631	1.0550	0.1996	0.146*
H13C	0.7903	1.0500	0.1321	0.146*
C14	0.5245 (3)	1.0263 (7)	0.3815 (6)	0.0422 (19)
H14A	0.5166	0.9544	0.4147	0.051*
H14B	0.5611	1.0652	0.4280	0.051*
C15	0.5443 (3)	0.9998 (7)	0.2812 (6)	0.0397 (19)
H15A	0.5498	1.0713	0.2456	0.048*
H15B	0.5866	0.9599	0.2960	0.048*
C16	0.3585 (4)	1.0680 (7)	0.3631 (7)	0.049 (2)
H16	0.3665	1.1265	0.4128	0.058*
C17	0.2923 (4)	1.0267 (7)	0.3318 (7)	0.048 (2)
C18	0.2740 (4)	0.9378 (8)	0.2589 (7)	0.051 (2)
C19	0.2075 (4)	0.9048 (8)	0.2342 (7)	0.059 (3)
H19	0.1954	0.8429	0.1889	0.071*
C20	0.1578 (4)	0.9599 (9)	0.2739 (8)	0.065 (3)
C21	0.1795 (5)	1.0508 (8)	0.3459 (8)	0.066 (3)
H21	0.1487	1.0888	0.3761	0.079*
C22	0.2412 (4)	1.0817 (8)	0.3705 (7)	0.057 (2)
H22	0.2527	1.1436	0.4161	0.069*
C23	0.0379 (5)	1.0076 (11)	0.2675 (10)	0.087 (3)
H23A	0.0533	1.0868	0.2728	0.104*
H23B	−0.0013	1.0020	0.2112	0.104*
C24	0.0237 (6)	0.9686 (12)	0.3669 (10)	0.110 (4)
H24A	0.0075	0.8908	0.3595	0.165*
H24B	−0.0093	1.0177	0.3856	0.165*
H24C	0.0636	0.9718	0.4208	0.165*
C25	0.0727 (5)	0.8171 (10)	0.1932 (10)	0.083 (3)
H25A	0.1089	0.7620	0.2083	0.100*
H25B	0.0352	0.7848	0.2170	0.100*
C26	0.0544 (6)	0.8385 (12)	0.0819 (10)	0.109 (4)
H26A	0.0138	0.8818	0.0659	0.164*
H26B	0.0482	0.7664	0.0450	0.164*
H26C	0.0890	0.8815	0.0607	0.164*
C27	0.2690 (8)	0.5540 (14)	0.1403 (14)	0.151 (6)
H27A	0.2945	0.6170	0.1761	0.226*
H27B	0.2914	0.5225	0.0894	0.226*
H27C	0.2645	0.4954	0.1901	0.226*
C28	0.2039 (10)	0.5947 (16)	0.0880 (15)	0.139 (6)
C29	0.1968 (7)	0.6857 (14)	0.0057 (12)	0.135 (5)
H29A	0.1514	0.6892	−0.0323	0.202*
H29B	0.2249	0.6678	−0.0417	0.202*
H29C	0.2095	0.7589	0.0382	0.202*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cu1	0.0317 (5)	0.0379 (6)	0.0287 (5)	−0.0031 (4)	0.0086 (4)	−0.0046 (4)
Cu2	0.0319 (5)	0.0410 (6)	0.0332 (6)	−0.0024 (4)	0.0093 (4)	−0.0071 (4)
N1	0.030 (3)	0.043 (4)	0.036 (4)	−0.004 (3)	0.010 (3)	−0.005 (3)
N2	0.047 (4)	0.071 (5)	0.067 (6)	0.000 (4)	0.018 (4)	−0.004 (4)
N3	0.036 (3)	0.045 (4)	0.047 (4)	−0.005 (3)	0.014 (3)	−0.010 (3)
N4	0.057 (5)	0.081 (6)	0.090 (7)	−0.005 (5)	0.025 (5)	−0.023 (5)
O1	0.034 (3)	0.046 (3)	0.038 (3)	−0.003 (2)	0.009 (2)	−0.014 (3)
O2	0.034 (3)	0.052 (3)	0.039 (3)	−0.006 (2)	0.012 (2)	−0.011 (3)
O3	0.034 (3)	0.047 (3)	0.041 (3)	−0.007 (2)	0.013 (2)	−0.010 (3)
O4	0.042 (3)	0.042 (3)	0.050 (4)	−0.008 (3)	0.011 (3)	−0.011 (3)
O5	0.035 (3)	0.048 (3)	0.037 (3)	−0.008 (2)	0.013 (2)	−0.011 (3)
O6	0.038 (3)	0.051 (3)	0.050 (4)	−0.004 (3)	0.015 (3)	−0.017 (3)
O7	0.137 (9)	0.164 (11)	0.162 (11)	−0.028 (8)	0.036 (8)	−0.006 (8)
C1	0.033 (4)	0.046 (5)	0.038 (5)	−0.004 (4)	0.005 (3)	−0.007 (4)
C2	0.035 (4)	0.051 (5)	0.041 (5)	−0.004 (4)	0.009 (3)	−0.011 (4)
C3	0.036 (4)	0.042 (5)	0.038 (5)	−0.003 (4)	0.010 (3)	−0.003 (4)
C4	0.036 (4)	0.043 (5)	0.041 (5)	−0.001 (4)	0.014 (3)	−0.004 (4)
C5	0.036 (4)	0.045 (5)	0.046 (5)	−0.001 (4)	0.015 (4)	−0.005 (4)
C6	0.039 (5)	0.055 (5)	0.052 (5)	−0.005 (4)	0.015 (4)	−0.004 (4)
C7	0.041 (5)	0.057 (6)	0.059 (6)	−0.003 (4)	0.017 (4)	−0.004 (5)
C8	0.042 (5)	0.058 (6)	0.055 (6)	0.000 (4)	0.019 (4)	−0.003 (5)
C9	0.041 (4)	0.048 (5)	0.045 (5)	0.001 (4)	0.014 (4)	−0.003 (4)
C10	0.049 (5)	0.074 (7)	0.072 (7)	−0.001 (5)	0.020 (5)	−0.002 (6)
C11	0.066 (6)	0.085 (8)	0.092 (8)	0.011 (6)	0.026 (6)	0.006 (7)
C12	0.053 (6)	0.087 (8)	0.078 (8)	−0.004 (6)	0.017 (5)	−0.007 (6)
C13	0.090 (8)	0.088 (9)	0.111 (11)	−0.004 (7)	0.017 (7)	−0.006 (8)
C14	0.038 (4)	0.044 (5)	0.043 (5)	−0.008 (4)	0.006 (4)	−0.008 (4)
C15	0.034 (4)	0.044 (5)	0.040 (5)	−0.010 (4)	0.008 (3)	−0.009 (4)
C16	0.045 (5)	0.050 (5)	0.053 (6)	−0.002 (4)	0.017 (4)	−0.014 (4)
C17	0.043 (5)	0.052 (5)	0.054 (6)	−0.005 (4)	0.022 (4)	−0.016 (5)
C18	0.044 (5)	0.058 (6)	0.058 (6)	−0.003 (4)	0.023 (4)	−0.014 (5)
C19	0.049 (5)	0.064 (6)	0.069 (7)	−0.005 (5)	0.024 (5)	−0.017 (5)
C20	0.053 (6)	0.071 (7)	0.076 (7)	−0.006 (5)	0.023 (5)	−0.018 (6)
C21	0.055 (6)	0.071 (7)	0.077 (7)	−0.003 (5)	0.027 (5)	−0.020 (6)
C22	0.050 (5)	0.060 (6)	0.065 (6)	−0.004 (5)	0.023 (5)	−0.019 (5)
C23	0.069 (7)	0.096 (9)	0.098 (10)	−0.007 (6)	0.025 (6)	−0.018 (7)
C24	0.097 (9)	0.115 (11)	0.116 (12)	−0.014 (8)	0.019 (8)	−0.015 (9)
C25	0.063 (7)	0.092 (9)	0.100 (10)	−0.008 (6)	0.027 (6)	−0.021 (8)
C26	0.097 (9)	0.118 (11)	0.108 (12)	−0.006 (8)	0.013 (8)	−0.005 (9)
C27	0.123 (13)	0.170 (18)	0.157 (17)	−0.019 (12)	0.025 (12)	0.007 (13)
C28	0.128 (14)	0.151 (16)	0.145 (16)	−0.031 (13)	0.047 (13)	0.010 (12)
C29	0.125 (12)	0.144 (14)	0.135 (14)	−0.020 (11)	0.028 (10)	−0.008 (12)

Geometric parameters (Å, º) top

Cu1—O3	1.880 (5)	C11—H11A	0.9600
Cu1—O2	1.909 (5)	C11—H11B	0.9600
Cu1—N1	1.910 (6)	C11—H11C	0.9600
Cu1—O5	1.942 (5)	C12—C13	1.456 (14)
Cu1—Cu2	3.0051 (12)	C12—H12A	0.9700
Cu2—O6	1.874 (5)	C12—H12B	0.9700
Cu2—O2	1.911 (5)	C13—H13A	0.9600
Cu2—O5	1.912 (5)	C13—H13B	0.9600
Cu2—N3	1.914 (6)	C13—H13C	0.9600
N1—C3	1.295 (8)	C14—C15	1.488 (10)
N1—O1	1.428 (7)	C14—H14A	0.9700
N2—C7	1.394 (10)	C14—H14B	0.9700
N2—C12	1.480 (12)	C15—H15A	0.9700
N2—C10	1.485 (11)	C15—H15B	0.9700
N3—C16	1.297 (9)	C16—C17	1.421 (11)
N3—O4	1.419 (7)	C16—H16	0.9300
N4—C20	1.363 (11)	C17—C18	1.400 (11)
N4—C25	1.459 (13)	C17—C22	1.416 (10)
N4—C23	1.552 (12)	C18—C19	1.392 (11)
O1—C1	1.425 (8)	C19—C20	1.401 (11)
O2—C2	1.412 (8)	C19—H19	0.9300
O3—C5	1.330 (8)	C20—C21	1.419 (13)
O4—C14	1.435 (8)	C21—C22	1.295 (11)
O5—C15	1.393 (8)	C21—H21	0.9300
O6—C18	1.324 (8)	C22—H22	0.9300
O7—C28	1.275 (16)	C23—C24	1.465 (14)
C1—C2	1.488 (10)	C23—H23A	0.9700
C1—H1A	0.9700	C23—H23B	0.9700
C1—H1B	0.9700	C24—H24A	0.9600
C2—H2A	0.9700	C24—H24B	0.9600
C2—H2B	0.9700	C24—H24C	0.9600
C3—C4	1.417 (10)	C25—C26	1.442 (15)
C3—H3	0.9300	C25—H25A	0.9700
C4—C5	1.398 (11)	C25—H25B	0.9700
C4—C9	1.415 (10)	C26—H26A	0.9600
C5—C6	1.371 (10)	C26—H26B	0.9600
C6—C7	1.403 (11)	C26—H26C	0.9600
C6—H6	0.9300	C27—C28	1.45 (2)
C7—C8	1.374 (12)	C27—H27A	0.9600
C8—C9	1.365 (10)	C27—H27B	0.9600
C8—H8	0.9300	C27—H27C	0.9600
C9—H9	0.9300	C28—C29	1.49 (2)
C10—C11	1.470 (13)	C29—H29A	0.9600
C10—H10A	0.9700	C29—H29B	0.9600
C10—H10B	0.9700	C29—H29C	0.9600

O3—Cu1—O2	169.2 (2)	H11B—C11—H11C	109.5
O3—Cu1—N1	93.7 (2)	C13—C12—N2	102.3 (9)
O2—Cu1—N1	96.1 (2)	C13—C12—H12A	111.3
O3—Cu1—O5	94.5 (2)	N2—C12—H12A	111.3
O2—Cu1—O5	76.2 (2)	C13—C12—H12B	111.3
N1—Cu1—O5	170.1 (2)	N2—C12—H12B	111.3
O3—Cu1—Cu2	132.92 (15)	H12A—C12—H12B	109.2
O2—Cu1—Cu2	38.15 (15)	C12—C13—H13A	109.5
N1—Cu1—Cu2	133.02 (17)	C12—C13—H13B	109.5
O5—Cu1—Cu2	38.40 (13)	H13A—C13—H13B	109.5
O6—Cu2—O2	95.0 (2)	C12—C13—H13C	109.5
O6—Cu2—O5	170.6 (2)	H13A—C13—H13C	109.5
O2—Cu2—O5	76.8 (2)	H13B—C13—H13C	109.5
O6—Cu2—N3	93.9 (2)	O4—C14—C15	113.7 (6)
O2—Cu2—N3	167.9 (2)	O4—C14—H14A	108.8
O5—Cu2—N3	94.9 (2)	C15—C14—H14A	108.8
O6—Cu2—Cu1	133.10 (16)	O4—C14—H14B	108.8
O2—Cu2—Cu1	38.11 (14)	C15—C14—H14B	108.8
O5—Cu2—Cu1	39.11 (14)	H14A—C14—H14B	107.7
N3—Cu2—Cu1	132.15 (18)	O5—C15—C14	111.6 (6)
C3—N1—O1	109.2 (6)	O5—C15—H15A	109.3
C3—N1—Cu1	127.5 (5)	C14—C15—H15A	109.3
O1—N1—Cu1	123.0 (4)	O5—C15—H15B	109.3
C7—N2—C12	124.0 (7)	C14—C15—H15B	109.3
C7—N2—C10	119.0 (8)	H15A—C15—H15B	108.0
C12—N2—C10	116.8 (7)	N3—C16—C17	125.3 (8)
C16—N3—O4	110.4 (6)	N3—C16—H16	117.4
C16—N3—Cu2	125.9 (6)	C17—C16—H16	117.4
O4—N3—Cu2	122.9 (4)	C18—C17—C22	117.7 (7)
C20—N4—C25	122.6 (8)	C18—C17—C16	122.9 (7)
C20—N4—C23	119.3 (8)	C22—C17—C16	119.3 (8)
C25—N4—C23	117.8 (8)	O6—C18—C19	117.7 (8)
C1—O1—N1	110.6 (5)	O6—C18—C17	124.5 (7)
C2—O2—Cu1	124.9 (4)	C19—C18—C17	117.8 (7)
C2—O2—Cu2	127.3 (4)	C18—C19—C20	123.6 (9)
Cu1—O2—Cu2	103.7 (2)	C18—C19—H19	118.2
C5—O3—Cu1	127.0 (5)	C20—C19—H19	118.2
N3—O4—C14	110.0 (5)	N4—C20—C19	121.9 (9)
C15—O5—Cu2	126.6 (4)	N4—C20—C21	122.3 (8)
C15—O5—Cu1	129.3 (4)	C19—C20—C21	115.8 (8)
Cu2—O5—Cu1	102.5 (2)	C22—C21—C20	121.4 (9)
C18—O6—Cu2	126.9 (5)	C22—C21—H21	119.3
O1—C1—C2	115.1 (6)	C20—C21—H21	119.3
O1—C1—H1A	108.5	C21—C22—C17	123.7 (9)
C2—C1—H1A	108.5	C21—C22—H22	118.2
O1—C1—H1B	108.5	C17—C22—H22	118.2
C2—C1—H1B	108.5	C24—C23—N4	104.5 (10)
H1A—C1—H1B	107.5	C24—C23—H23A	110.8
O2—C2—C1	112.4 (6)	N4—C23—H23A	110.8
O2—C2—H2A	109.1	C24—C23—H23B	110.8
C1—C2—H2A	109.1	N4—C23—H23B	110.8
O2—C2—H2B	109.1	H23A—C23—H23B	108.9
C1—C2—H2B	109.1	C23—C24—H24A	109.5
H2A—C2—H2B	107.9	C23—C24—H24B	109.5
N1—C3—C4	123.2 (7)	H24A—C24—H24B	109.5
N1—C3—H3	118.4	C23—C24—H24C	109.5
C4—C3—H3	118.4	H24A—C24—H24C	109.5
C5—C4—C9	118.3 (7)	H24B—C24—H24C	109.5
C5—C4—C3	125.0 (7)	C26—C25—N4	109.4 (11)
C9—C4—C3	116.7 (7)	C26—C25—H25A	109.8
O3—C5—C6	117.8 (7)	N4—C25—H25A	109.8
O3—C5—C4	123.5 (7)	C26—C25—H25B	109.8
C6—C5—C4	118.7 (7)	N4—C25—H25B	109.8
C5—C6—C7	122.4 (8)	H25A—C25—H25B	108.2
C5—C6—H6	118.8	C25—C26—H26A	109.5
C7—C6—H6	118.8	C25—C26—H26B	109.5
C8—C7—N2	121.6 (8)	H26A—C26—H26B	109.5
C8—C7—C6	118.9 (8)	C25—C26—H26C	109.5
N2—C7—C6	119.5 (8)	H26A—C26—H26C	109.5
C9—C8—C7	119.6 (8)	H26B—C26—H26C	109.5
C9—C8—H8	120.2	C28—C27—H27A	109.5
C7—C8—H8	120.2	C28—C27—H27B	109.5
C8—C9—C4	122.1 (8)	H27A—C27—H27B	109.5
C8—C9—H9	119.0	C28—C27—H27C	109.5
C4—C9—H9	119.0	H27A—C27—H27C	109.5
C11—C10—N2	113.8 (8)	H27B—C27—H27C	109.5
C11—C10—H10A	108.8	O7—C28—C27	126.8 (18)
N2—C10—H10A	108.8	O7—C28—C29	112.6 (17)
C11—C10—H10B	108.8	C27—C28—C29	120.5 (16)
N2—C10—H10B	108.8	C28—C29—H29A	109.5
H10A—C10—H10B	107.7	C28—C29—H29B	109.5
C10—C11—H11A	109.5	H29A—C29—H29B	109.5
C10—C11—H11B	109.5	C28—C29—H29C	109.5
H11A—C11—H11B	109.5	H29A—C29—H29C	109.5
C10—C11—H11C	109.5	H29B—C29—H29C	109.5
H11A—C11—H11C	109.5

O3—Cu1—Cu2—O6	−173.8 (3)	N1—O1—C1—C2	−73.6 (8)
O2—Cu1—Cu2—O6	−2.9 (3)	Cu1—O2—C2—C1	−18.9 (9)
N1—Cu1—Cu2—O6	14.9 (4)	Cu2—O2—C2—C1	134.5 (6)
O5—Cu1—Cu2—O6	−172.3 (3)	O1—C1—C2—O2	64.6 (9)
O3—Cu1—Cu2—O2	−170.9 (3)	O1—N1—C3—C4	−175.2 (7)
N1—Cu1—Cu2—O2	17.8 (4)	Cu1—N1—C3—C4	−1.9 (11)
O5—Cu1—Cu2—O2	−169.3 (4)	N1—C3—C4—C5	−1.2 (13)
O3—Cu1—Cu2—O5	−1.6 (3)	N1—C3—C4—C9	−179.8 (7)
O2—Cu1—Cu2—O5	169.3 (4)	Cu1—O3—C5—C6	−177.8 (5)
N1—Cu1—Cu2—O5	−172.8 (4)	Cu1—O3—C5—C4	0.5 (11)
O3—Cu1—Cu2—N3	19.7 (4)	C9—C4—C5—O3	−179.4 (7)
O2—Cu1—Cu2—N3	−169.3 (4)	C3—C4—C5—O3	2.0 (13)
N1—Cu1—Cu2—N3	−151.5 (4)	C9—C4—C5—C6	−1.2 (12)
O5—Cu1—Cu2—N3	21.3 (4)	C3—C4—C5—C6	−179.8 (8)
O3—Cu1—N1—C3	3.2 (7)	O3—C5—C6—C7	178.2 (7)
O2—Cu1—N1—C3	−172.3 (7)	C4—C5—C6—C7	−0.2 (13)
Cu2—Cu1—N1—C3	176.8 (5)	C12—N2—C7—C8	−166.2 (9)
O3—Cu1—N1—O1	175.6 (5)	C10—N2—C7—C8	8.8 (13)
O2—Cu1—N1—O1	0.1 (5)	C12—N2—C7—C6	12.7 (13)
Cu2—Cu1—N1—O1	−10.8 (7)	C10—N2—C7—C6	−172.3 (8)
O6—Cu2—N3—C16	−8.1 (7)	C5—C6—C7—C8	1.4 (14)
O2—Cu2—N3—C16	129.1 (11)	C5—C6—C7—N2	−177.5 (8)
O5—Cu2—N3—C16	175.3 (7)	N2—C7—C8—C9	177.8 (8)
Cu1—Cu2—N3—C16	162.0 (6)	C6—C7—C8—C9	−1.1 (13)
O6—Cu2—N3—O4	−177.0 (5)	C7—C8—C9—C4	−0.3 (13)
O2—Cu2—N3—O4	−39.8 (15)	C5—C4—C9—C8	1.5 (12)
O5—Cu2—N3—O4	6.4 (6)	C3—C4—C9—C8	−179.8 (7)
Cu1—Cu2—N3—O4	−6.9 (7)	C7—N2—C10—C11	−90.6 (11)
C3—N1—O1—C1	−150.4 (6)	C12—N2—C10—C11	84.7 (11)
Cu1—N1—O1—C1	36.0 (7)	C7—N2—C12—C13	−90.3 (10)
O3—Cu1—O2—C2	−163.5 (10)	C10—N2—C12—C13	94.6 (10)
N1—Cu1—O2—C2	−8.5 (6)	N3—O4—C14—C15	75.3 (7)
O5—Cu1—O2—C2	165.3 (6)	Cu2—O5—C15—C14	23.7 (9)
Cu2—Cu1—O2—C2	158.5 (7)	Cu1—O5—C15—C14	−173.3 (5)
O3—Cu1—O2—Cu2	38.0 (13)	O4—C14—C15—O5	−65.7 (9)
N1—Cu1—O2—Cu2	−167.0 (3)	O4—N3—C16—C17	175.1 (8)
O5—Cu1—O2—Cu2	6.8 (2)	Cu2—N3—C16—C17	5.1 (13)
O6—Cu2—O2—C2	20.1 (6)	N3—C16—C17—C18	1.0 (15)
O5—Cu2—O2—C2	−164.7 (6)	N3—C16—C17—C22	−175.1 (8)
N3—Cu2—O2—C2	−117.0 (12)	Cu2—O6—C18—C19	173.8 (6)
Cu1—Cu2—O2—C2	−157.8 (7)	Cu2—O6—C18—C17	−5.0 (13)
O6—Cu2—O2—Cu1	177.9 (3)	C22—C17—C18—O6	175.0 (8)
O5—Cu2—O2—Cu1	−6.9 (2)	C16—C17—C18—O6	−1.2 (15)
N3—Cu2—O2—Cu1	40.8 (13)	C22—C17—C18—C19	−3.8 (13)
O2—Cu1—O3—C5	152.7 (11)	C16—C17—C18—C19	−179.9 (9)
N1—Cu1—O3—C5	−2.4 (6)	O6—C18—C19—C20	−175.2 (9)
O5—Cu1—O3—C5	−177.0 (6)	C17—C18—C19—C20	3.6 (15)
Cu2—Cu1—O3—C5	−176.0 (5)	C25—N4—C20—C19	11.0 (16)
C16—N3—O4—C14	148.0 (7)	C23—N4—C20—C19	−162.8 (10)
Cu2—N3—O4—C14	−41.6 (7)	C25—N4—C20—C21	−166.1 (11)
O2—Cu2—O5—C15	173.3 (6)	C23—N4—C20—C21	20.1 (15)
N3—Cu2—O5—C15	2.3 (6)	C18—C19—C20—N4	−179.8 (9)
Cu1—Cu2—O5—C15	166.6 (7)	C18—C19—C20—C21	−2.5 (15)
O2—Cu2—O5—Cu1	6.7 (2)	N4—C20—C21—C22	179.1 (10)
N3—Cu2—O5—Cu1	−164.3 (3)	C19—C20—C21—C22	1.8 (15)
O3—Cu1—O5—C15	12.8 (6)	C20—C21—C22—C17	−2.3 (16)
O2—Cu1—O5—C15	−172.8 (7)	C18—C17—C22—C21	3.3 (15)
Cu2—Cu1—O5—C15	−166.1 (8)	C16—C17—C22—C21	179.6 (9)
O3—Cu1—O5—Cu2	178.8 (2)	C20—N4—C23—C24	−98.5 (11)
O2—Cu1—O5—Cu2	−6.8 (2)	C25—N4—C23—C24	87.4 (12)
O2—Cu2—O6—C18	−163.7 (7)	C20—N4—C25—C26	−93.3 (12)
N3—Cu2—O6—C18	8.0 (7)	C23—N4—C25—C26	80.6 (12)
Cu1—Cu2—O6—C18	−161.9 (6)

Experimental details

Crystal data
Chemical formula	[Cu₂(C₁₃H₁₈N₂O₃)₂]·C₃H₆O
M_r	685.75
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	298
a, b, c (Å)	20.633 (3), 11.6045 (14), 13.0738 (17)
β (°)	102.635 (2)
V (Å³)	3054.6 (7)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	1.44
Crystal size (mm)	0.53 × 0.49 × 0.47

Data collection
Diffractometer	Bruker SMART 1000 CCD diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 1996)
T_min, T_max	0.515, 0.550
No. of measured, independent and observed [I > 2σ(I)] reflections	14726, 5363, 2967
R_int	0.092
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.075, 0.229, 1.00
No. of reflections	5363
No. of parameters	385
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.88, −1.07

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

Acknowledgements

This work was supported by the Foundation of the Education Department of Gansu Province (No. 0604–01) and the `Qing Lan' Talent Engineering Funds of Lanzhou Jiaotong University (No. QL-03–01 A), which are gratefully acknowledged.

References

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