Bromidotetra-kis-(2-ethyl-1H-imidazole-κN (3))copper(II) bromide.

The Cu(II) ion in the title mol-ecular salt, [CuBr(C5H8N2)4]Br, is coordinated in a square-pyramidal geometry by four N atoms of imidazole ligands and one bromide anion in the apical position. In the crystal, the ions are linked by N-H⋯Br hydrogen bonds involving both the coordinating and the free bromide species as acceptors. A C-H⋯Br inter-action is also observed. Overall, a three-dimensional network results.

Related literature

For more copper(II) complexes with bromido and imidazole ligands, see: Godlewska et al. (2011 ▶); Hossaini Sadr et al. (2004 ▶); Li et al. (2007 ▶); Liu et al. (2007 ▶); Näther et al. (2002a ▶,b ▶); Parker & Breneman (1995 ▶).

Experimental

Crystal data

[CuBr(C5H8N2)4]Br

M = 607.90

Monoclinic,

a = 10.1771 (2) Å

b = 19.9230 (3) Å

c = 12.5723 (2) Å

β = 90.386 (2)°

V = 2549.08 (8) Å3

Z = 4

Cu Kα radiation

μ = 5.06 mm−1

T = 150 K

0.21 × 0.20 × 0.05 mm

Data collection

Oxford Diffraction Xcalibur (Sapphire3, Gemini ultra) diffractometer

Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010 ▶) T min = 0.416, T max = 0.786

9229 measured reflections

4058 independent reflections

3719 reflections with I > 2σ(I)

R int = 0.020

Refinement

R[F 2 > 2σ(F 2)] = 0.024

wR(F 2) = 0.060

S = 1.05

4058 reflections

284 parameters

H-atom parameters constrained

Δρmax = 0.42 e Å−3

Δρmin = −0.34 e Å−3

Data collection: CrysAlis PRO (Oxford Diffraction, 2010 ▶); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; 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.

Click here for additional data file.

Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536812047447/hb6993sup1.cif

Click here for additional data file.

Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812047447/hb6993Isup2.hkl

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

[CuBr(C5H8N2)4]Br	F(000) = 1228
Mr = 607.90	Dx = 1.584 Mg m−3
Monoclinic, P21/n	Cu Kα radiation, λ = 1.54184 Å
Hall symbol: -P 2yn	Cell parameters from 6482 reflections
a = 10.1771 (2) Å	θ = 3.5–62.6°
b = 19.9230 (3) Å	µ = 5.06 mm−1
c = 12.5723 (2) Å	T = 150 K
β = 90.386 (2)°	Indifferent fragment, violet
V = 2549.08 (8) Å3	0.21 × 0.20 × 0.05 mm
Z = 4

Oxford Diffraction Xcalibur (Sapphire3, Gemini ultra) diffractometer	4058 independent reflections
Radiation source: fine-focus sealed tube	3719 reflections with I > 2σ(I)
Mirror monochromator	Rint = 0.020
Detector resolution: 16.1399 pixels mm-1	θmax = 62.7°, θmin = 4.2°
ω scans	h = −11→10
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2010)	k = −22→18
Tmin = 0.416, Tmax = 0.786	l = −14→10
9229 measured reflections

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)] = 0.024	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.060	H-atom parameters constrained
S = 1.05	w = 1/[σ2(Fo2) + (0.0323P)2 + 1.0444P] where P = (Fo2 + 2Fc2)/3
4058 reflections	(Δ/σ)max = 0.002
284 parameters	Δρmax = 0.42 e Å−3
0 restraints	Δρmin = −0.34 e Å−3

Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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.

	x	y	z	Uiso*/Ueq
Cu1	0.24721 (3)	0.861967 (16)	0.79905 (3)	0.01634 (9)
Br1	0.23840 (2)	0.845061 (13)	1.036999 (19)	0.02191 (8)
N1	0.08773 (19)	0.80290 (10)	0.77538 (16)	0.0205 (4)
N2	−0.0633 (2)	0.73282 (11)	0.71786 (18)	0.0298 (5)
H2	−0.1047	0.7035	0.6774	0.036*
C1	−0.0142 (2)	0.80070 (13)	0.8483 (2)	0.0257 (6)
H1	−0.0181	0.8257	0.9126	0.031*
C2	−0.1070 (3)	0.75730 (14)	0.8132 (2)	0.0321 (6)
H2A	−0.1867	0.7460	0.8478	0.038*
C3	0.0542 (2)	0.76125 (12)	0.6966 (2)	0.0235 (5)
C4	0.1271 (3)	0.74770 (14)	0.5965 (2)	0.0284 (6)
H4A	0.1946	0.7829	0.5871	0.034*
H4B	0.0651	0.7507	0.5357	0.034*
C5	0.1940 (3)	0.67900 (15)	0.5945 (2)	0.0376 (7)
H5A	0.2570	0.6759	0.6536	0.056*
H5B	0.2403	0.6734	0.5270	0.056*
H5C	0.1276	0.6437	0.6016	0.056*
N3	0.12993 (18)	0.94198 (10)	0.79926 (15)	0.0185 (4)
N4	−0.0231 (2)	1.01429 (10)	0.75619 (17)	0.0234 (5)
H4	−0.0838	1.0353	0.7188	0.028*
C6	0.1095 (2)	0.98466 (12)	0.8846 (2)	0.0244 (5)
H6	0.1547	0.9829	0.9509	0.029*
C7	0.0141 (3)	1.02935 (13)	0.8579 (2)	0.0271 (6)
H7	−0.0200	1.0642	0.9013	0.033*
C8	0.0490 (2)	0.96163 (12)	0.72257 (19)	0.0192 (5)
C9	0.0401 (3)	0.93264 (13)	0.6135 (2)	0.0270 (6)
H9A	0.1069	0.8968	0.6062	0.032*
H9B	0.0604	0.9681	0.5609	0.032*
C10	−0.0951 (3)	0.90355 (15)	0.5886 (3)	0.0417 (8)
H10A	−0.1172	0.8695	0.6418	0.063*
H10B	−0.0943	0.8829	0.5178	0.063*
H10C	−0.1608	0.9395	0.5900	0.063*
N5	0.40712 (19)	0.92118 (10)	0.81018 (16)	0.0208 (4)
N6	0.5637 (2)	0.99454 (12)	0.78382 (19)	0.0340 (6)
H6A	0.6086	1.0277	0.7556	0.041*
C11	0.5028 (3)	0.91305 (14)	0.8881 (2)	0.0323 (6)
H11	0.5007	0.8808	0.9437	0.039*
C12	0.5992 (3)	0.95818 (17)	0.8722 (2)	0.0414 (8)
H12	0.6766	0.9638	0.9140	0.050*
C13	0.4484 (2)	0.97063 (12)	0.7479 (2)	0.0227 (5)
C14	0.3819 (3)	0.99879 (13)	0.6518 (2)	0.0268 (6)
H14A	0.3141	0.9667	0.6268	0.032*
H14B	0.4473	1.0039	0.5944	0.032*
C15	0.3173 (3)	1.06667 (14)	0.6727 (2)	0.0355 (7)
H15A	0.2571	1.0627	0.7329	0.053*
H15B	0.2681	1.0808	0.6093	0.053*
H15C	0.3851	1.1000	0.6893	0.053*
N7	0.36498 (18)	0.78339 (10)	0.77723 (16)	0.0189 (4)
N8	0.5199 (2)	0.71775 (11)	0.71834 (18)	0.0270 (5)
H8	0.5820	0.7013	0.6776	0.032*
C16	0.3837 (2)	0.73151 (12)	0.8490 (2)	0.0245 (5)
H16	0.3364	0.7253	0.9132	0.029*
C17	0.4800 (3)	0.69128 (13)	0.8130 (2)	0.0302 (6)
H17	0.5136	0.6522	0.8467	0.036*
C18	0.4486 (2)	0.77323 (13)	0.6977 (2)	0.0237 (5)
C19	0.4629 (3)	0.81532 (15)	0.6011 (2)	0.0340 (6)
H19A	0.3952	0.8510	0.6017	0.041*
H19B	0.4476	0.7872	0.5373	0.041*
C20	0.5988 (3)	0.84754 (18)	0.5942 (3)	0.0557 (10)
H20A	0.6180	0.8718	0.6603	0.084*
H20B	0.6005	0.8790	0.5342	0.084*
H20C	0.6651	0.8126	0.5835	0.084*
Br2	0.73566 (2)	1.087768 (13)	0.61807 (2)	0.02419 (8)

	U11	U22	U33	U12	U13	U23
Cu1	0.01598 (17)	0.01449 (17)	0.01854 (18)	0.00071 (13)	−0.00093 (13)	0.00029 (13)
Br1	0.02224 (14)	0.02382 (14)	0.01968 (14)	0.00267 (10)	0.00118 (10)	0.00369 (10)
N1	0.0216 (10)	0.0164 (10)	0.0233 (11)	−0.0011 (8)	−0.0030 (8)	0.0007 (8)
N2	0.0298 (12)	0.0262 (12)	0.0333 (13)	−0.0099 (10)	−0.0089 (10)	−0.0016 (10)
C1	0.0244 (13)	0.0288 (14)	0.0240 (13)	−0.0035 (11)	0.0002 (10)	0.0001 (11)
C2	0.0276 (14)	0.0350 (15)	0.0336 (15)	−0.0101 (12)	−0.0004 (12)	0.0033 (13)
C3	0.0247 (13)	0.0185 (12)	0.0272 (13)	−0.0005 (10)	−0.0082 (10)	0.0025 (10)
C4	0.0325 (14)	0.0301 (14)	0.0226 (13)	0.0025 (12)	−0.0063 (11)	−0.0050 (11)
C5	0.0433 (17)	0.0336 (16)	0.0359 (16)	0.0049 (13)	−0.0065 (13)	−0.0115 (13)
N3	0.0187 (10)	0.0160 (10)	0.0208 (10)	−0.0006 (8)	−0.0001 (8)	0.0006 (8)
N4	0.0228 (10)	0.0220 (11)	0.0253 (11)	0.0072 (9)	−0.0009 (9)	0.0045 (9)
C6	0.0334 (14)	0.0208 (13)	0.0190 (13)	0.0033 (11)	0.0009 (10)	−0.0029 (10)
C7	0.0346 (14)	0.0221 (13)	0.0247 (13)	0.0080 (11)	0.0042 (11)	−0.0015 (11)
C8	0.0187 (12)	0.0172 (12)	0.0218 (12)	−0.0002 (10)	−0.0006 (10)	0.0026 (10)
C9	0.0326 (14)	0.0262 (14)	0.0222 (13)	0.0048 (11)	−0.0035 (11)	0.0026 (11)
C10	0.0432 (17)	0.0373 (17)	0.0443 (18)	0.0062 (14)	−0.0207 (14)	−0.0104 (14)
N5	0.0184 (10)	0.0196 (10)	0.0243 (11)	−0.0007 (8)	0.0001 (8)	0.0020 (9)
N6	0.0286 (12)	0.0348 (13)	0.0384 (14)	−0.0148 (10)	−0.0038 (10)	0.0108 (11)
C11	0.0269 (14)	0.0379 (16)	0.0320 (15)	−0.0047 (12)	−0.0083 (12)	0.0128 (13)
C12	0.0294 (15)	0.055 (2)	0.0393 (17)	−0.0153 (14)	−0.0138 (13)	0.0157 (15)
C13	0.0212 (12)	0.0240 (13)	0.0230 (13)	−0.0013 (10)	0.0024 (10)	−0.0025 (10)
C14	0.0288 (14)	0.0273 (14)	0.0243 (14)	−0.0023 (11)	0.0034 (11)	0.0047 (11)
C15	0.0418 (16)	0.0286 (15)	0.0362 (16)	0.0019 (13)	0.0009 (13)	0.0108 (13)
N7	0.0191 (10)	0.0164 (10)	0.0213 (10)	0.0017 (8)	0.0003 (8)	0.0000 (8)
N8	0.0240 (11)	0.0256 (12)	0.0314 (12)	0.0075 (9)	0.0041 (9)	−0.0071 (10)
C16	0.0290 (13)	0.0213 (13)	0.0231 (13)	0.0039 (11)	−0.0010 (11)	0.0014 (10)
C17	0.0371 (15)	0.0222 (14)	0.0311 (15)	0.0091 (12)	−0.0040 (12)	0.0003 (11)
C18	0.0215 (12)	0.0237 (13)	0.0259 (13)	0.0007 (10)	0.0013 (10)	−0.0062 (11)
C19	0.0445 (16)	0.0313 (15)	0.0264 (14)	0.0022 (13)	0.0115 (12)	−0.0002 (12)
C20	0.050 (2)	0.047 (2)	0.070 (2)	0.0011 (16)	0.0324 (18)	0.0124 (18)
Br2	0.02263 (14)	0.02361 (14)	0.02629 (15)	−0.00013 (10)	−0.00150 (10)	0.00541 (10)

Cu1—N3	1.9914 (19)	C10—H10B	0.9800
Cu1—N7	1.9918 (19)	C10—H10C	0.9800
Cu1—N5	2.014 (2)	N5—C13	1.328 (3)
Cu1—N1	2.0250 (19)	N5—C11	1.386 (3)
Cu1—Br1	3.0125 (4)	N6—C13	1.341 (3)
N1—C3	1.334 (3)	N6—C12	1.373 (4)
N1—C1	1.390 (3)	N6—H6A	0.8800
N2—C3	1.351 (3)	C11—C12	1.346 (4)
N2—C2	1.371 (4)	C11—H11	0.9500
N2—H2	0.8800	C12—H12	0.9500
C1—C2	1.352 (4)	C13—C14	1.491 (4)
C1—H1	0.9500	C14—C15	1.527 (4)
C2—H2A	0.9500	C14—H14A	0.9900
C3—C4	1.490 (4)	C14—H14B	0.9900
C4—C5	1.529 (4)	C15—H15A	0.9800
C4—H4A	0.9900	C15—H15B	0.9800
C4—H4B	0.9900	C15—H15C	0.9800
C5—H5A	0.9800	N7—C18	1.333 (3)
C5—H5B	0.9800	N7—C16	1.385 (3)
C5—H5C	0.9800	N8—C18	1.347 (3)
N3—C8	1.323 (3)	N8—C17	1.365 (4)
N3—C6	1.386 (3)	N8—H8	0.8800
N4—C8	1.350 (3)	C16—C17	1.348 (4)
N4—C7	1.364 (3)	C16—H16	0.9500
N4—H4	0.8800	C17—H17	0.9500
C6—C7	1.358 (4)	C18—C19	1.483 (4)
C6—H6	0.9500	C19—C20	1.528 (4)
C7—H7	0.9500	C19—H19A	0.9900
C8—C9	1.490 (4)	C19—H19B	0.9900
C9—C10	1.524 (4)	C20—H20A	0.9800
C9—H9A	0.9900	C20—H20B	0.9800
C9—H9B	0.9900	C20—H20C	0.9800
C10—H10A	0.9800
N3—Cu1—N7	172.13 (8)	C9—C10—H10B	109.5
N3—Cu1—N5	90.87 (8)	H10A—C10—H10B	109.5
N7—Cu1—N5	89.04 (8)	C9—C10—H10C	109.5
N3—Cu1—N1	89.17 (8)	H10A—C10—H10C	109.5
N7—Cu1—N1	90.31 (8)	H10B—C10—H10C	109.5
N5—Cu1—N1	175.54 (8)	C13—N5—C11	106.2 (2)
N3—Cu1—Br1	93.80 (6)	C13—N5—Cu1	130.70 (17)
N7—Cu1—Br1	94.06 (6)	C11—N5—Cu1	122.98 (17)
N5—Cu1—Br1	91.48 (6)	C13—N6—C12	108.1 (2)
N1—Cu1—Br1	92.97 (6)	C13—N6—H6A	126.0
C3—N1—C1	106.4 (2)	C12—N6—H6A	126.0
C3—N1—Cu1	132.14 (17)	C12—C11—N5	109.1 (2)
C1—N1—Cu1	121.50 (16)	C12—C11—H11	125.5
C3—N2—C2	108.4 (2)	N5—C11—H11	125.5
C3—N2—H2	125.8	C11—C12—N6	106.5 (2)
C2—N2—H2	125.8	C11—C12—H12	126.8
C2—C1—N1	109.1 (2)	N6—C12—H12	126.8
C2—C1—H1	125.4	N5—C13—N6	110.1 (2)
N1—C1—H1	125.4	N5—C13—C14	127.8 (2)
C1—C2—N2	106.4 (2)	N6—C13—C14	122.0 (2)
C1—C2—H2A	126.8	C13—C14—C15	112.8 (2)
N2—C2—H2A	126.8	C13—C14—H14A	109.0
N1—C3—N2	109.6 (2)	C15—C14—H14A	109.0
N1—C3—C4	127.8 (2)	C13—C14—H14B	109.0
N2—C3—C4	122.5 (2)	C15—C14—H14B	109.0
C3—C4—C5	113.6 (2)	H14A—C14—H14B	107.8
C3—C4—H4A	108.8	C14—C15—H15A	109.5
C5—C4—H4A	108.8	C14—C15—H15B	109.5
C3—C4—H4B	108.8	H15A—C15—H15B	109.5
C5—C4—H4B	108.8	C14—C15—H15C	109.5
H4A—C4—H4B	107.7	H15A—C15—H15C	109.5
C4—C5—H5A	109.5	H15B—C15—H15C	109.5
C4—C5—H5B	109.5	C18—N7—C16	106.9 (2)
H5A—C5—H5B	109.5	C18—N7—Cu1	127.62 (17)
C4—C5—H5C	109.5	C16—N7—Cu1	125.24 (16)
H5A—C5—H5C	109.5	C18—N8—C17	108.8 (2)
H5B—C5—H5C	109.5	C18—N8—H8	125.6
C8—N3—C6	106.7 (2)	C17—N8—H8	125.6
C8—N3—Cu1	127.30 (16)	C17—C16—N7	108.8 (2)
C6—N3—Cu1	125.82 (16)	C17—C16—H16	125.6
C8—N4—C7	108.5 (2)	N7—C16—H16	125.6
C8—N4—H4	125.8	C16—C17—N8	106.5 (2)
C7—N4—H4	125.8	C16—C17—H17	126.7
C7—C6—N3	108.7 (2)	N8—C17—H17	126.7
C7—C6—H6	125.6	N7—C18—N8	109.0 (2)
N3—C6—H6	125.6	N7—C18—C19	126.5 (2)
C6—C7—N4	106.3 (2)	N8—C18—C19	124.5 (2)
C6—C7—H7	126.8	C18—C19—C20	112.2 (3)
N4—C7—H7	126.8	C18—C19—H19A	109.2
N3—C8—N4	109.8 (2)	C20—C19—H19A	109.2
N3—C8—C9	126.1 (2)	C18—C19—H19B	109.2
N4—C8—C9	124.0 (2)	C20—C19—H19B	109.2
C8—C9—C10	112.7 (2)	H19A—C19—H19B	107.9
C8—C9—H9A	109.1	C19—C20—H20A	109.5
C10—C9—H9A	109.1	C19—C20—H20B	109.5
C8—C9—H9B	109.1	H20A—C20—H20B	109.5
C10—C9—H9B	109.1	C19—C20—H20C	109.5
H9A—C9—H9B	107.8	H20A—C20—H20C	109.5
C9—C10—H10A	109.5	H20B—C20—H20C	109.5
N3—Cu1—N1—C3	118.9 (2)	N3—Cu1—N5—C13	−57.2 (2)
N7—Cu1—N1—C3	−53.2 (2)	N7—Cu1—N5—C13	115.0 (2)
Br1—Cu1—N1—C3	−147.3 (2)	Br1—Cu1—N5—C13	−151.0 (2)
N3—Cu1—N1—C1	−60.63 (19)	N3—Cu1—N5—C11	126.8 (2)
N7—Cu1—N1—C1	127.22 (19)	N7—Cu1—N5—C11	−61.0 (2)
Br1—Cu1—N1—C1	33.14 (18)	Br1—Cu1—N5—C11	33.0 (2)
C3—N1—C1—C2	0.7 (3)	C13—N5—C11—C12	0.7 (3)
Cu1—N1—C1—C2	−179.70 (18)	Cu1—N5—C11—C12	177.6 (2)
N1—C1—C2—N2	−0.5 (3)	N5—C11—C12—N6	−0.2 (4)
C3—N2—C2—C1	0.1 (3)	C13—N6—C12—C11	−0.5 (4)
C1—N1—C3—N2	−0.6 (3)	C11—N5—C13—N6	−1.0 (3)
Cu1—N1—C3—N2	179.83 (16)	Cu1—N5—C13—N6	−177.53 (18)
C1—N1—C3—C4	177.1 (2)	C11—N5—C13—C14	179.6 (3)
Cu1—N1—C3—C4	−2.5 (4)	Cu1—N5—C13—C14	3.0 (4)
C2—N2—C3—N1	0.3 (3)	C12—N6—C13—N5	1.0 (3)
C2—N2—C3—C4	−177.5 (2)	C12—N6—C13—C14	−179.6 (3)
N1—C3—C4—C5	107.0 (3)	N5—C13—C14—C15	104.3 (3)
N2—C3—C4—C5	−75.6 (3)	N6—C13—C14—C15	−75.1 (3)
N5—Cu1—N3—C8	117.5 (2)	N5—Cu1—N7—C18	−62.3 (2)
N1—Cu1—N3—C8	−58.1 (2)	N1—Cu1—N7—C18	113.3 (2)
Br1—Cu1—N3—C8	−151.00 (19)	Br1—Cu1—N7—C18	−153.7 (2)
N5—Cu1—N3—C6	−68.5 (2)	N5—Cu1—N7—C16	111.1 (2)
N1—Cu1—N3—C6	115.9 (2)	N1—Cu1—N7—C16	−73.3 (2)
Br1—Cu1—N3—C6	23.00 (19)	Br1—Cu1—N7—C16	19.70 (19)
C8—N3—C6—C7	0.8 (3)	C18—N7—C16—C17	1.1 (3)
Cu1—N3—C6—C7	−174.24 (17)	Cu1—N7—C16—C17	−173.44 (17)
N3—C6—C7—N4	−0.4 (3)	N7—C16—C17—N8	−0.7 (3)
C8—N4—C7—C6	−0.2 (3)	C18—N8—C17—C16	0.0 (3)
C6—N3—C8—N4	−0.9 (3)	C16—N7—C18—N8	−1.1 (3)
Cu1—N3—C8—N4	174.05 (15)	Cu1—N7—C18—N8	173.31 (16)
C6—N3—C8—C9	177.0 (2)	C16—N7—C18—C19	178.9 (2)
Cu1—N3—C8—C9	−8.0 (3)	Cu1—N7—C18—C19	−6.7 (4)
C7—N4—C8—N3	0.7 (3)	C17—N8—C18—N7	0.7 (3)
C7—N4—C8—C9	−177.3 (2)	C17—N8—C18—C19	−179.3 (3)
N3—C8—C9—C10	119.5 (3)	N7—C18—C19—C20	116.9 (3)
N4—C8—C9—C10	−62.9 (3)	N8—C18—C19—C20	−63.1 (4)

D—H···A	D—H	H···A	D···A	D—H···A
N2—H2···Br1i	0.88	2.56	3.405 (2)	161
N4—H4···Br2ii	0.88	2.46	3.336 (2)	176
N6—H6A···Br2	0.88	2.47	3.302 (2)	157
N8—H8···Br1iii	0.88	2.56	3.432 (2)	172
C17—H17···Br2iv	0.95	2.89	3.653 (3)	138

Table 1

Selected bond lengths (Å)

Cu1—N3	1.9914 (19)
Cu1—N7	1.9918 (19)
Cu1—N5	2.014 (2)
Cu1—N1	2.0250 (19)
Cu1—Br1	3.0125 (4)

Table 2

Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N2—H2⋯Br1i	0.88	2.56	3.405 (2)	161
N4—H4⋯Br2ii	0.88	2.46	3.336 (2)	176
N6—H6A⋯Br2	0.88	2.47	3.302 (2)	157
N8—H8⋯Br1iii	0.88	2.56	3.432 (2)	172
C17—H17⋯Br2iv	0.95	2.89	3.653 (3)	138

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .