Crystal structure of di-bromido-(N,N-di-methyl-formamide-κO){2-(1H-indol-3-yl)-N-[(quinolin-2-yl-κN)methyl-idene]ethanamine-κN}cadmium.

In the mononuclear title complex, [CdBr2(C20H17N3)(C3H7NO)], synthesized from the quinoline-derived Schiff base 2-(1H-indol-3-yl)-N-(quinolin-2-yl-methyl-ene)ethan-amine (IQME), the coordination geometry around the Cd(2+) atom is distorted trigonal bipyramidal, the axial positions being occupied by the quinoline N atom [Cd-N = 2.401 (3) Å] and one di-methyl-formamide O-atom donor [Cd-O = 2.399 (2) Å]. The equatorial plane is formed by the imine N atom [Cd-N = 2.293 (3) Å] and two bromides [Cd-Br = 2.5621 (8) and 2.5676 (8) Å], with the deviation of the Cd(II) atom from the equatorial plane being 0.046 (1) Å. An intra-molecular C-H⋯Br inter-action occurs. In the crystal, N-H⋯Br inter-actions generate [101] chains.

Related literature

For applications of quinolinyl-containing Schiff bases, see: Motswainyana et al. (2013 ▸); Das et al. (2013 ▸); Song et al. (2011 ▸); Jursic et al. (2002 ▸). The present work is part of an ongoing structural study of Schiff base–metal complexes, see: Faizi & Hussain (2014 ▸); Faizi & Sen (2014 ▸); Faizi et al. (2014 ▸); Moroz et al. (2012 ▸). For properties of d 10 metal complexes, see: Henkel & Krebs (2004 ▸); Kimblin et al. (2000 ▸); Penkova et al. (2010 ▸). For related structures, see: Penkova et al. (2009 ▸); Petrusenko et al. (1997 ▸).

Experimental

Crystal data

[CdBr2(C20H17N3)(C3H7NO)]

M = 644.68

Monoclinic,

a = 14.686 (4) Å

b = 8.384 (2) Å

c = 20.157 (6) Å

β = 97.785 (5)°

V = 2458.9 (12) Å3

Z = 4

Mo Kα radiation

μ = 4.16 mm−1

T = 100 K

0.20 × 0.15 × 0.12 mm

Data collection

Bruker SMART APEX CCD diffractometer

Absorption correction: multi-scan (SADABS; Bruker, 2003 ▸) T min = 0.490, T max = 0.635

12172 measured reflections

4308 independent reflections

3120 reflections with I > 2σ(I)

R int = 0.034

Refinement

R[F 2 > 2σ(F 2)] = 0.036

wR(F 2) = 0.092

S = 1.02

4308 reflections

286 parameters

90 restraints

H atoms treated by a mixture of independent and constrained refinement

Δρmax = 0.74 e Å−3

Δρmin = −0.47 e Å−3

Data collection: SMART (Bruker, 2003 ▸); cell refinement: SAINT (Bruker, 2003 ▸); data reduction: SAINT; program(s) used to solve structure: SIR97 (Altomare et al., 1999 ▸); program(s) used to refine structure: SHELXL97 (Sheldrick, 2015 ▸); molecular graphics: DIAMOND (Brandenburg & Putz, 2001 ▸); software used to prepare material for publication: SHELXL97.

Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S2056989015000778/gg2145sup1.cif

Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989015000778/gg2145Isup2.hkl

Click here for additional data file.

. DOI: 10.1107/S2056989015000778/gg2145fig1.tif

The mol­ecular conformation and atom-numbering scheme for the title compound, with non-H atoms drawn as 40% probability displacement ellipsoids.

Click here for additional data file.

b . DOI: 10.1107/S2056989015000778/gg2145fig2.tif

The one-dimensional hydrogen-bonded chain structure in the title compound extending along b, with hydrogen bonds shown as dashed lines.

CCDC reference: 1043591

Additional supporting information: crystallographic information; 3D view; checkCIF report

[CdBr2(C20H17N3)(C3H7NO)]	F(000) = 1264
Mr = 644.68	Dx = 1.741 Mg m−3
Monoclinic, P21/n	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2yn	Cell parameters from 2146 reflections
a = 14.686 (4) Å	θ = 1.8–25.0°
b = 8.384 (2) Å	µ = 4.16 mm−1
c = 20.157 (6) Å	T = 100 K
β = 97.785 (5)°	Block, yellow
V = 2458.9 (12) Å3	0.20 × 0.15 × 0.12 mm
Z = 4

Bruker SMART APEX CCD diffractometer	4308 independent reflections
Radiation source: fine-focus sealed tube	3120 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.034
/w–scans	θmax = 25.0°, θmin = 1.6°
Absorption correction: multi-scan (SADABS; Bruker, 2003)	h = −17→17
Tmin = 0.490, Tmax = 0.635	k = −9→9
12172 measured reflections	l = −20→23

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)] = 0.036	Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.092	H atoms treated by a mixture of independent and constrained refinement
S = 1.02	w = 1/[σ2(Fo2) + (0.046P)2] where P = (Fo2 + 2Fc2)/3
4308 reflections	(Δ/σ)max = 0.001
286 parameters	Δρmax = 0.74 e Å−3
90 restraints	Δρmin = −0.47 e Å−3

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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
C1	0.5561 (3)	0.7787 (5)	0.6436 (2)	0.0453 (10)
C2	0.5466 (3)	0.7981 (6)	0.5739 (2)	0.0566 (12)
H2	0.5985	0.7951	0.5520	0.068*
C3	0.4627 (4)	0.8211 (6)	0.5382 (3)	0.0677 (14)
H3	0.4574	0.8341	0.4920	0.081*
C4	0.3834 (3)	0.8255 (6)	0.5702 (3)	0.0700 (15)
H4	0.3263	0.8418	0.5450	0.084*
C5	0.3891 (3)	0.8065 (6)	0.6373 (3)	0.0649 (13)
H5	0.3359	0.8083	0.6577	0.078*
C6	0.4762 (3)	0.7837 (5)	0.6770 (2)	0.0502 (11)
C7	0.4882 (3)	0.7673 (6)	0.7461 (3)	0.0577 (12)
H7	0.4372	0.7704	0.7689	0.069*
C8	0.5739 (3)	0.7469 (6)	0.7813 (2)	0.0554 (12)
H8	0.5820	0.7370	0.8277	0.067*
C9	0.6492 (3)	0.7413 (5)	0.7455 (2)	0.0439 (10)
C10	0.7428 (3)	0.7150 (5)	0.7806 (2)	0.0441 (10)
H10	0.7511	0.7098	0.8272	0.053*
C11	0.9037 (3)	0.6785 (5)	0.7898 (2)	0.0469 (11)
H11A	0.9358	0.5919	0.7711	0.056*
H11B	0.8962	0.6500	0.8354	0.056*
C12	0.9611 (3)	0.8304 (5)	0.7905 (2)	0.0522 (11)
H12A	0.9698	0.8576	0.7450	0.063*
H12B	0.9284	0.9176	0.8084	0.063*
C13	1.0533 (3)	0.8096 (5)	0.8323 (2)	0.0495 (11)
C14	1.0778 (4)	0.8648 (6)	0.8953 (2)	0.0636 (13)
H14	1.0406	0.9277	0.9185	0.076*
C15	1.1988 (3)	0.7273 (6)	0.8722 (2)	0.0556 (12)
C16	1.2826 (3)	0.6473 (7)	0.8738 (3)	0.0686 (14)
H16	1.3262	0.6495	0.9118	0.082*
C17	1.2980 (4)	0.5663 (7)	0.8180 (3)	0.0753 (15)
H17	1.3532	0.5119	0.8182	0.090*
C18	1.2341 (4)	0.5622 (7)	0.7609 (3)	0.0715 (15)
H18	1.2477	0.5079	0.7232	0.086*
C19	1.1504 (3)	0.6380 (6)	0.7594 (2)	0.0583 (12)
H19	1.1074	0.6339	0.7211	0.070*
C20	1.1309 (3)	0.7205 (5)	0.8157 (2)	0.0477 (10)
C21	0.9869 (3)	0.7038 (7)	0.5975 (3)	0.0697 (15)
H21	0.9706	0.8096	0.5887	0.084*
C22	1.1131 (5)	0.7539 (10)	0.5352 (5)	0.150 (4)
H22A	1.1142	0.7114	0.4911	0.225*
H22B	1.1747	0.7609	0.5580	0.225*
H22C	1.0859	0.8583	0.5319	0.225*
C23	1.0901 (5)	0.4887 (8)	0.5815 (3)	0.099 (2)
H23A	1.1049	0.4468	0.5399	0.149*
H23B	1.0420	0.4258	0.5962	0.149*
H23C	1.1436	0.4849	0.6146	0.149*
Cd1	0.78346 (2)	0.70754 (4)	0.635528 (15)	0.04782 (13)
N1	0.6416 (2)	0.7570 (4)	0.67886 (17)	0.0435 (8)
N2	0.8125 (2)	0.6993 (4)	0.75016 (17)	0.0426 (8)
N3	1.1651 (3)	0.8157 (6)	0.9203 (2)	0.0696 (12)
N4	1.0598 (3)	0.6510 (6)	0.5720 (2)	0.0701 (12)
Br1	0.79839 (4)	0.96756 (6)	0.57108 (3)	0.06928 (18)
Br2	0.72209 (4)	0.46231 (6)	0.56734 (2)	0.06947 (18)
O1	0.9397 (2)	0.6298 (5)	0.63075 (17)	0.0739 (10)
H3N3	1.192 (3)	0.842 (5)	0.9637 (13)	0.071 (15)*

	U11	U22	U33	U12	U13	U23
C1	0.045 (2)	0.041 (3)	0.050 (3)	−0.002 (2)	0.0079 (19)	−0.004 (2)
C2	0.051 (3)	0.067 (3)	0.050 (3)	0.002 (3)	0.003 (2)	−0.002 (2)
C3	0.066 (3)	0.073 (4)	0.060 (3)	0.001 (3)	−0.006 (2)	0.000 (3)
C4	0.044 (3)	0.076 (4)	0.083 (4)	0.009 (3)	−0.013 (3)	−0.005 (3)
C5	0.043 (3)	0.070 (4)	0.081 (3)	0.005 (3)	0.008 (2)	−0.011 (3)
C6	0.043 (2)	0.043 (3)	0.066 (3)	0.000 (2)	0.012 (2)	−0.007 (2)
C7	0.053 (3)	0.058 (3)	0.066 (3)	0.001 (2)	0.022 (2)	−0.007 (2)
C8	0.058 (3)	0.061 (3)	0.051 (3)	0.002 (2)	0.020 (2)	−0.003 (2)
C9	0.048 (2)	0.040 (3)	0.045 (3)	0.001 (2)	0.0099 (19)	−0.0047 (19)
C10	0.056 (2)	0.041 (3)	0.037 (2)	0.002 (2)	0.0097 (19)	−0.0008 (19)
C11	0.051 (2)	0.046 (3)	0.042 (2)	0.001 (2)	0.001 (2)	0.004 (2)
C12	0.056 (3)	0.046 (3)	0.054 (3)	0.001 (2)	0.005 (2)	0.003 (2)
C13	0.056 (3)	0.047 (3)	0.044 (3)	−0.010 (2)	0.004 (2)	0.001 (2)
C14	0.070 (3)	0.065 (3)	0.057 (3)	−0.012 (3)	0.011 (2)	−0.014 (3)
C15	0.051 (3)	0.064 (3)	0.050 (3)	−0.014 (2)	−0.003 (2)	0.009 (2)
C16	0.056 (3)	0.075 (4)	0.071 (3)	−0.010 (3)	−0.006 (3)	0.020 (3)
C17	0.051 (3)	0.080 (4)	0.094 (4)	−0.004 (3)	0.006 (3)	0.016 (3)
C18	0.067 (3)	0.081 (4)	0.071 (3)	−0.003 (3)	0.025 (3)	0.001 (3)
C19	0.064 (3)	0.068 (3)	0.042 (3)	−0.003 (3)	0.004 (2)	0.004 (2)
C20	0.054 (2)	0.049 (3)	0.040 (2)	−0.009 (2)	0.0054 (19)	0.005 (2)
C21	0.057 (3)	0.090 (4)	0.064 (3)	0.002 (3)	0.017 (3)	0.007 (3)
C22	0.126 (7)	0.142 (7)	0.208 (10)	−0.025 (5)	0.113 (7)	0.009 (6)
C23	0.094 (5)	0.116 (5)	0.089 (4)	0.031 (4)	0.020 (4)	−0.009 (4)
Cd1	0.0476 (2)	0.0570 (2)	0.0402 (2)	0.00472 (16)	0.01071 (14)	0.00239 (15)
N1	0.0435 (19)	0.048 (2)	0.040 (2)	0.0015 (17)	0.0078 (15)	−0.0050 (16)
N2	0.0440 (19)	0.042 (2)	0.0394 (19)	0.0019 (17)	−0.0016 (15)	0.0021 (16)
N3	0.072 (3)	0.089 (4)	0.045 (3)	−0.016 (2)	−0.005 (2)	−0.009 (2)
N4	0.053 (2)	0.092 (3)	0.070 (3)	0.001 (2)	0.025 (2)	−0.005 (2)
Br1	0.0819 (4)	0.0595 (3)	0.0678 (4)	0.0028 (3)	0.0150 (3)	0.0150 (3)
Br2	0.1018 (4)	0.0537 (3)	0.0519 (3)	0.0022 (3)	0.0066 (3)	−0.0024 (2)
O1	0.0531 (19)	0.101 (3)	0.072 (2)	0.0162 (19)	0.0258 (17)	0.026 (2)

C1—N1	1.369 (5)	C14—H14	0.9300
C1—C2	1.401 (6)	C15—N3	1.366 (6)
C1—C6	1.431 (6)	C15—C16	1.397 (7)
C2—C3	1.355 (6)	C15—C20	1.409 (6)
C2—H2	0.9300	C16—C17	1.360 (8)
C3—C4	1.407 (7)	C16—H16	0.9300
C3—H3	0.9300	C17—C18	1.383 (7)
C4—C5	1.352 (7)	C17—H17	0.9300
C4—H4	0.9300	C18—C19	1.381 (7)
C5—C6	1.427 (6)	C18—H18	0.9300
C5—H5	0.9300	C19—C20	1.392 (6)
C6—C7	1.387 (7)	C19—H19	0.9300
C7—C8	1.370 (6)	C21—O1	1.201 (5)
C7—H7	0.9300	C21—N4	1.324 (6)
C8—C9	1.400 (6)	C21—H21	0.9300
C8—H8	0.9300	C22—N4	1.437 (8)
C9—N1	1.338 (5)	C22—H22A	0.9600
C9—C10	1.476 (6)	C22—H22B	0.9600
C10—N2	1.270 (5)	C22—H22C	0.9600
C10—H10	0.9300	C23—N4	1.437 (7)
C11—N2	1.474 (5)	C23—H23A	0.9600
C11—C12	1.526 (6)	C23—H23B	0.9600
C11—H11A	0.9700	C23—H23C	0.9600
C11—H11B	0.9700	Cd1—N2	2.293 (3)
C12—C13	1.505 (6)	Cd1—O1	2.399 (3)
C12—H12A	0.9700	Cd1—N1	2.401 (3)
C12—H12B	0.9700	Cd1—Br1	2.5621 (8)
C13—C14	1.353 (6)	Cd1—Br2	2.5676 (8)
C13—C20	1.439 (6)	N3—H3N3	0.937 (19)
C14—N3	1.376 (7)
N1—C1—C2	119.7 (4)	C17—C16—H16	121.1
N1—C1—C6	120.8 (4)	C15—C16—H16	121.1
C2—C1—C6	119.5 (4)	C16—C17—C18	122.0 (5)
C3—C2—C1	120.6 (5)	C16—C17—H17	119.0
C3—C2—H2	119.7	C18—C17—H17	119.0
C1—C2—H2	119.7	C19—C18—C17	120.6 (5)
C2—C3—C4	120.6 (5)	C19—C18—H18	119.7
C2—C3—H3	119.7	C17—C18—H18	119.7
C4—C3—H3	119.7	C18—C19—C20	119.5 (5)
C5—C4—C3	120.9 (5)	C18—C19—H19	120.3
C5—C4—H4	119.6	C20—C19—H19	120.3
C3—C4—H4	119.6	C19—C20—C15	118.5 (4)
C4—C5—C6	120.4 (5)	C19—C20—C13	134.8 (4)
C4—C5—H5	119.8	C15—C20—C13	106.7 (4)
C6—C5—H5	119.8	O1—C21—N4	127.1 (6)
C7—C6—C5	123.9 (4)	O1—C21—H21	116.5
C7—C6—C1	118.0 (4)	N4—C21—H21	116.5
C5—C6—C1	118.0 (4)	N4—C22—H22A	109.5
C8—C7—C6	120.9 (4)	N4—C22—H22B	109.5
C8—C7—H7	119.5	H22A—C22—H22B	109.5
C6—C7—H7	119.5	N4—C22—H22C	109.5
C7—C8—C9	118.2 (4)	H22A—C22—H22C	109.5
C7—C8—H8	120.9	H22B—C22—H22C	109.5
C9—C8—H8	120.9	N4—C23—H23A	109.5
N1—C9—C8	123.4 (4)	N4—C23—H23B	109.5
N1—C9—C10	116.2 (4)	H23A—C23—H23B	109.5
C8—C9—C10	120.4 (4)	N4—C23—H23C	109.5
N2—C10—C9	122.9 (4)	H23A—C23—H23C	109.5
N2—C10—H10	118.6	H23B—C23—H23C	109.5
C9—C10—H10	118.6	N2—Cd1—O1	89.09 (12)
N2—C11—C12	111.5 (3)	N2—Cd1—N1	71.98 (12)
N2—C11—H11A	109.3	O1—Cd1—N1	160.51 (12)
C12—C11—H11A	109.3	N2—Cd1—Br1	121.29 (9)
N2—C11—H11B	109.3	O1—Cd1—Br1	93.61 (9)
C12—C11—H11B	109.3	N1—Cd1—Br1	100.11 (9)
H11A—C11—H11B	108.0	N2—Cd1—Br2	121.28 (9)
C13—C12—C11	111.2 (3)	O1—Cd1—Br2	91.67 (10)
C13—C12—H12A	109.4	N1—Cd1—Br2	94.25 (8)
C11—C12—H12A	109.4	Br1—Cd1—Br2	117.24 (3)
C13—C12—H12B	109.4	C9—N1—C1	118.7 (4)
C11—C12—H12B	109.4	C9—N1—Cd1	112.9 (3)
H12A—C12—H12B	108.0	C1—N1—Cd1	127.9 (3)
C14—C13—C20	106.1 (4)	C10—N2—C11	118.9 (4)
C14—C13—C12	126.2 (5)	C10—N2—Cd1	115.6 (3)
C20—C13—C12	127.6 (4)	C11—N2—Cd1	125.5 (3)
C13—C14—N3	111.0 (5)	C15—N3—C14	108.2 (4)
C13—C14—H14	124.5	C15—N3—H3N3	130 (3)
N3—C14—H14	124.5	C14—N3—H3N3	122 (3)
N3—C15—C16	130.3 (5)	C21—N4—C23	121.1 (5)
N3—C15—C20	108.1 (4)	C21—N4—C22	121.7 (6)
C16—C15—C20	121.6 (5)	C23—N4—C22	117.2 (5)
C17—C16—C15	117.7 (5)	C21—O1—Cd1	120.7 (3)
N1—C1—C2—C3	−179.4 (4)	C8—C9—N1—C1	−0.4 (6)
C6—C1—C2—C3	−0.1 (7)	C10—C9—N1—C1	178.9 (4)
C1—C2—C3—C4	−0.2 (8)	C8—C9—N1—Cd1	−172.7 (3)
C2—C3—C4—C5	−0.2 (8)	C10—C9—N1—Cd1	6.5 (5)
C3—C4—C5—C6	0.9 (8)	C2—C1—N1—C9	179.0 (4)
C4—C5—C6—C7	178.3 (5)	C6—C1—N1—C9	−0.4 (6)
C4—C5—C6—C1	−1.1 (7)	C2—C1—N1—Cd1	−10.0 (6)
N1—C1—C6—C7	0.6 (6)	C6—C1—N1—Cd1	170.7 (3)
C2—C1—C6—C7	−178.7 (4)	N2—Cd1—N1—C9	−5.4 (3)
N1—C1—C6—C5	−179.9 (4)	O1—Cd1—N1—C9	8.8 (6)
C2—C1—C6—C5	0.7 (7)	Br1—Cd1—N1—C9	−125.2 (3)
C5—C6—C7—C8	−179.5 (5)	Br2—Cd1—N1—C9	116.1 (3)
C1—C6—C7—C8	−0.1 (7)	N2—Cd1—N1—C1	−176.9 (4)
C6—C7—C8—C9	−0.6 (7)	O1—Cd1—N1—C1	−162.6 (4)
C7—C8—C9—N1	0.9 (7)	Br1—Cd1—N1—C1	63.3 (3)
C7—C8—C9—C10	−178.3 (4)	Br2—Cd1—N1—C1	−55.3 (3)
N1—C9—C10—N2	−3.7 (6)	C9—C10—N2—C11	178.1 (4)
C8—C9—C10—N2	175.6 (4)	C9—C10—N2—Cd1	−1.6 (5)
N2—C11—C12—C13	178.7 (4)	C12—C11—N2—C10	−105.1 (4)
C11—C12—C13—C14	−102.0 (5)	C12—C11—N2—Cd1	74.5 (4)
C11—C12—C13—C20	74.1 (6)	O1—Cd1—N2—C10	−171.7 (3)
C20—C13—C14—N3	−0.7 (6)	N1—Cd1—N2—C10	3.6 (3)
C12—C13—C14—N3	176.0 (4)	Br1—Cd1—N2—C10	94.6 (3)
N3—C15—C16—C17	179.5 (5)	Br2—Cd1—N2—C10	−80.3 (3)
C20—C15—C16—C17	2.1 (7)	O1—Cd1—N2—C11	8.6 (3)
C15—C16—C17—C18	0.3 (8)	N1—Cd1—N2—C11	−176.1 (3)
C16—C17—C18—C19	−1.7 (8)	Br1—Cd1—N2—C11	−85.0 (3)
C17—C18—C19—C20	0.7 (8)	Br2—Cd1—N2—C11	100.0 (3)
C18—C19—C20—C15	1.7 (7)	C16—C15—N3—C14	−177.8 (5)
C18—C19—C20—C13	−179.3 (5)	C20—C15—N3—C14	−0.2 (5)
N3—C15—C20—C19	179.0 (4)	C13—C14—N3—C15	0.6 (6)
C16—C15—C20—C19	−3.1 (7)	O1—C21—N4—C23	1.1 (9)
N3—C15—C20—C13	−0.2 (5)	O1—C21—N4—C22	−177.3 (7)
C16—C15—C20—C13	177.6 (4)	N4—C21—O1—Cd1	−155.8 (4)
C14—C13—C20—C19	−178.5 (5)	N2—Cd1—O1—C21	−129.2 (4)
C12—C13—C20—C19	4.8 (8)	N1—Cd1—O1—C21	−142.7 (4)
C14—C13—C20—C15	0.6 (5)	Br1—Cd1—O1—C21	−7.9 (4)
C12—C13—C20—C15	−176.1 (4)	Br2—Cd1—O1—C21	109.5 (4)

D—H···A	D—H	H···A	D···A	D—H···A
N3—H3N3···Br2i	0.94 (3)	2.65 (3)	3.504 (4)	153 (3)
C21—H21···Br1	0.93	2.83	3.527 (5)	132

Table 1

Hydrogen-bond geometry (, )

DHA	DH	HA	D A	DHA
N3H3N3Br2i	0.94(3)	2.65(3)	3.504(4)	153(3)
C21H21Br1	0.93	2.83	3.527(5)	132

Symmetry code: (i) .