metal-organic compounds
1,4-Diazoniabicyclo[2.2.2]octane tetrabromidocadmate(II) monohydrate
aDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: seikweng@um.edu.my
The metal atom in the anion of the title salt, (C6H14N2)[CdBr4]·H2O, shows a slightly distorted tetrahedral coordination. The water molecule is involved in three hydrogen bonds, viz. one N—H⋯O and two O—H⋯Br, and an N—H⋯Br interaction consolidates the three-dimensional network.
Related literature
For other ammonium tetrabromidocadmates, see: Al-Far & Ali (2008); Battaglia et al. (1991); Chen et al. (2006); Geselle & Fuess (1994); Hatano et al. (2008); Ishihara et al. (2002, 2006); Ravikumar et al. (1995); Waskowska (1994); Zhang & Fang (2005).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2008); cell SAINT (Bruker, 2008); 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: publCIF (Westrip, 2009).
Supporting information
10.1107/S160053680902813X/tk2504sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053680902813X/tk2504Isup2.hkl
Triethylenediammonium dibromide was prepared from the reaction of triethylenediamine (1 g, 1.68 mmol) with bromine (1:2) in the presence of excess hydrobromic acid. To this was added cadmium chloride hemipentahydrate (0.38 g, 1.68 mmol) in ethanol (50 ml). The mixture was heated for an hour. The filtered solution when allow to evaporate slowly yielded colorless crystals.
C- and N-bound H atoms were placed at calculated positions (C–H 0.97Å and N–H 0.86 Å) and were treated as riding on their parent atoms with U(H) set to 1.2Ueq(C, N). The water-bound H atoms were placed in chemically sensible positions on the basis of hydrogen bonding interactions but were not refined.
The final difference Fourier map had a peak 0.2 Å from Cd1 and a hole 0.4 Å from Br4.
Data collection: APEX2 (Bruker, 2008); cell
SAINT (Bruker, 2008); data reduction: SAINT (Bruker, 2008); 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: publCIF (Westrip, 2009).Fig. 1. Thermal ellipsoid plot (Barbour, 2001) of [C6H14N2][CdBr4].H2O at the 50% probability level. Hydrogen atoms are drawn as spheres of arbitrary radius. |
(C6H14N2)[CdBr4]·H2O | F(000) = 1048 |
Mr = 564.25 | Dx = 2.696 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 6547 reflections |
a = 8.6323 (1) Å | θ = 2.8–28.2° |
b = 11.8736 (2) Å | µ = 13.04 mm−1 |
c = 13.5619 (2) Å | T = 296 K |
V = 1390.05 (4) Å3 | Block, colorless |
Z = 4 | 0.30 × 0.15 × 0.05 mm |
Bruker SMART APEX diffractometer | 2451 independent reflections |
Radiation source: fine-focus sealed tube | 2267 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.034 |
ω scans | θmax = 25.0°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −10→10 |
Tmin = 0.111, Tmax = 0.562 | k = −14→14 |
10779 measured reflections | l = −16→16 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.057 | H-atom parameters constrained |
wR(F2) = 0.187 | w = 1/[σ2(Fo2) + (0.1P)2 + 5P] where P = (Fo2 + 2Fc2)/3 |
S = 1.36 | (Δ/σ)max = 0.001 |
2451 reflections | Δρmax = 2.21 e Å−3 |
128 parameters | Δρmin = −2.09 e Å−3 |
0 restraints | Absolute structure: Flack (1983), 1021 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.14 (3) |
(C6H14N2)[CdBr4]·H2O | V = 1390.05 (4) Å3 |
Mr = 564.25 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 8.6323 (1) Å | µ = 13.04 mm−1 |
b = 11.8736 (2) Å | T = 296 K |
c = 13.5619 (2) Å | 0.30 × 0.15 × 0.05 mm |
Bruker SMART APEX diffractometer | 2451 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2267 reflections with I > 2σ(I) |
Tmin = 0.111, Tmax = 0.562 | Rint = 0.034 |
10779 measured reflections |
R[F2 > 2σ(F2)] = 0.057 | H-atom parameters constrained |
wR(F2) = 0.187 | Δρmax = 2.21 e Å−3 |
S = 1.36 | Δρmin = −2.09 e Å−3 |
2451 reflections | Absolute structure: Flack (1983), 1021 Friedel pairs |
128 parameters | Absolute structure parameter: 0.14 (3) |
0 restraints |
x | y | z | Uiso*/Ueq | ||
Cd1 | 0.25482 (11) | 0.47127 (8) | 1.00019 (6) | 0.0410 (3) | |
Br1 | 0.3099 (2) | 0.28309 (13) | 0.91553 (12) | 0.0596 (5) | |
Br2 | 0.4870 (2) | 0.59802 (15) | 0.95680 (13) | 0.0579 (5) | |
Br3 | 0.2467 (2) | 0.46741 (14) | 1.19150 (10) | 0.0552 (4) | |
Br4 | 0.0032 (2) | 0.56945 (19) | 0.95508 (17) | 0.0741 (6) | |
O1W | 1.151 (3) | 0.265 (2) | 0.6666 (18) | 0.144 (9) | |
H11 | 1.1965 | 0.2150 | 0.6336 | 0.216* | |
H12 | 1.2016 | 0.2746 | 0.7189 | 0.216* | |
N1 | 0.6148 (13) | 0.4081 (10) | 0.7757 (7) | 0.040 (3) | |
H1 | 0.5272 | 0.4215 | 0.8034 | 0.048* | |
N2 | 0.8660 (14) | 0.3708 (12) | 0.6978 (13) | 0.063 (4) | |
H2 | 0.9523 | 0.3577 | 0.6682 | 0.076* | |
C1 | 0.725 (2) | 0.3684 (14) | 0.8530 (12) | 0.056 (4) | |
H1A | 0.6860 | 0.3008 | 0.8846 | 0.067* | |
H1B | 0.7396 | 0.4260 | 0.9029 | 0.067* | |
C2 | 0.882 (2) | 0.3435 (18) | 0.7975 (16) | 0.086 (8) | |
H2A | 0.9647 | 0.3877 | 0.8264 | 0.104* | |
H2B | 0.9083 | 0.2645 | 0.8042 | 0.104* | |
C3 | 0.5912 (16) | 0.3214 (11) | 0.7016 (12) | 0.045 (3) | |
H3A | 0.5121 | 0.3449 | 0.6551 | 0.054* | |
H3B | 0.5577 | 0.2519 | 0.7326 | 0.054* | |
C4 | 0.7409 (17) | 0.3035 (13) | 0.6494 (9) | 0.047 (3) | |
H4A | 0.7308 | 0.3262 | 0.5810 | 0.056* | |
H4B | 0.7679 | 0.2242 | 0.6510 | 0.056* | |
C5 | 0.6697 (19) | 0.5139 (11) | 0.7291 (11) | 0.044 (3) | |
H5A | 0.6781 | 0.5729 | 0.7783 | 0.052* | |
H5B | 0.5968 | 0.5382 | 0.6790 | 0.052* | |
C6 | 0.824 (2) | 0.4924 (13) | 0.6836 (17) | 0.066 (5) | |
H6A | 0.9016 | 0.5400 | 0.7143 | 0.079* | |
H6B | 0.8206 | 0.5100 | 0.6138 | 0.079* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cd1 | 0.0398 (5) | 0.0445 (6) | 0.0387 (5) | 0.0007 (4) | 0.0034 (5) | −0.0059 (4) |
Br1 | 0.0813 (11) | 0.0441 (8) | 0.0535 (8) | 0.0002 (8) | 0.0191 (7) | −0.0081 (7) |
Br2 | 0.0570 (9) | 0.0650 (10) | 0.0515 (8) | −0.0032 (8) | −0.0029 (7) | 0.0044 (7) |
Br3 | 0.0546 (8) | 0.0682 (10) | 0.0428 (7) | 0.0061 (9) | 0.0040 (7) | 0.0035 (6) |
Br4 | 0.0606 (11) | 0.0862 (13) | 0.0756 (12) | 0.0076 (10) | −0.0051 (9) | −0.0244 (10) |
O1W | 0.150 (18) | 0.153 (19) | 0.129 (16) | 0.073 (17) | 0.022 (14) | 0.012 (15) |
N1 | 0.037 (5) | 0.063 (7) | 0.020 (5) | −0.003 (5) | 0.003 (4) | −0.009 (5) |
N2 | 0.029 (6) | 0.057 (8) | 0.104 (12) | −0.002 (5) | 0.019 (7) | −0.038 (8) |
C1 | 0.067 (11) | 0.051 (9) | 0.051 (8) | 0.005 (8) | −0.023 (8) | 0.003 (7) |
C2 | 0.089 (14) | 0.071 (12) | 0.099 (15) | 0.039 (11) | −0.064 (13) | −0.051 (11) |
C3 | 0.036 (6) | 0.031 (7) | 0.069 (9) | 0.000 (5) | −0.002 (7) | 0.000 (6) |
C4 | 0.045 (7) | 0.056 (8) | 0.040 (6) | −0.008 (7) | −0.005 (7) | −0.014 (6) |
C5 | 0.059 (9) | 0.026 (6) | 0.045 (7) | 0.002 (6) | 0.007 (7) | 0.000 (6) |
C6 | 0.066 (11) | 0.040 (9) | 0.091 (12) | −0.011 (7) | 0.035 (10) | −0.017 (8) |
Cd1—Br4 | 2.540 (2) | C1—H1A | 0.9700 |
Cd1—Br1 | 2.557 (2) | C1—H1B | 0.9700 |
Cd1—Br2 | 2.574 (2) | C2—H2A | 0.9700 |
Cd1—Br3 | 2.596 (2) | C2—H2B | 0.9700 |
O1W—H11 | 0.84 | C3—C4 | 1.49 (2) |
O1W—H12 | 0.84 | C3—H3A | 0.9700 |
N1—C3 | 1.453 (18) | C3—H3B | 0.9700 |
N1—C5 | 1.484 (18) | C4—H4A | 0.9700 |
N1—C1 | 1.491 (18) | C4—H4B | 0.9700 |
N1—H1 | 0.8600 | C5—C6 | 1.49 (2) |
N2—C2 | 1.40 (3) | C5—H5A | 0.9700 |
N2—C4 | 1.495 (18) | C5—H5B | 0.9700 |
N2—C6 | 1.50 (2) | C6—H6A | 0.9700 |
N2—H2 | 0.8600 | C6—H6B | 0.9700 |
C1—C2 | 1.58 (3) | ||
Br4—Cd1—Br1 | 116.87 (7) | N2—C2—H2B | 109.8 |
Br4—Cd1—Br2 | 110.01 (7) | C1—C2—H2B | 109.8 |
Br1—Cd1—Br2 | 105.29 (7) | H2A—C2—H2B | 108.2 |
Br4—Cd1—Br3 | 103.05 (7) | N1—C3—C4 | 107.9 (11) |
Br1—Cd1—Br3 | 116.00 (7) | N1—C3—H3A | 110.1 |
Br2—Cd1—Br3 | 105.05 (6) | C4—C3—H3A | 110.1 |
H11—O1W—H12 | 107.7 | N1—C3—H3B | 110.1 |
C3—N1—C5 | 110.5 (10) | C4—C3—H3B | 110.1 |
C3—N1—C1 | 110.6 (12) | H3A—C3—H3B | 108.4 |
C5—N1—C1 | 111.3 (12) | C3—C4—N2 | 110.0 (11) |
C3—N1—H1 | 108.1 | C3—C4—H4A | 109.7 |
C5—N1—H1 | 108.1 | N2—C4—H4A | 109.7 |
C1—N1—H1 | 108.1 | C3—C4—H4B | 109.7 |
C2—N2—C4 | 111.8 (15) | N2—C4—H4B | 109.7 |
C2—N2—C6 | 111.8 (15) | H4A—C4—H4B | 108.2 |
C4—N2—C6 | 106.5 (14) | N1—C5—C6 | 108.5 (11) |
C2—N2—H2 | 108.9 | N1—C5—H5A | 110.0 |
C4—N2—H2 | 108.9 | C6—C5—H5A | 110.0 |
C6—N2—H2 | 108.9 | N1—C5—H5B | 110.0 |
N1—C1—C2 | 105.7 (13) | C6—C5—H5B | 110.0 |
N1—C1—H1A | 110.6 | H5A—C5—H5B | 108.4 |
C2—C1—H1A | 110.6 | C5—C6—N2 | 109.1 (12) |
N1—C1—H1B | 110.6 | C5—C6—H6A | 109.9 |
C2—C1—H1B | 110.6 | N2—C6—H6A | 109.9 |
H1A—C1—H1B | 108.7 | C5—C6—H6B | 109.9 |
N2—C2—C1 | 109.5 (13) | N2—C6—H6B | 109.9 |
N2—C2—H2A | 109.8 | H6A—C6—H6B | 108.3 |
C1—C2—H2A | 109.8 | ||
C3—N1—C1—C2 | 60.9 (16) | C2—N2—C4—C3 | 57.5 (17) |
C5—N1—C1—C2 | −62.3 (16) | C6—N2—C4—C3 | −64.8 (17) |
C4—N2—C2—C1 | −60.2 (17) | C3—N1—C5—C6 | −63.7 (16) |
C6—N2—C2—C1 | 59.0 (19) | C1—N1—C5—C6 | 59.6 (16) |
N1—C1—C2—N2 | 2 (2) | N1—C5—C6—N2 | 2 (2) |
C5—N1—C3—C4 | 58.4 (15) | C2—N2—C6—C5 | −63 (2) |
C1—N1—C3—C4 | −65.3 (15) | C4—N2—C6—C5 | 59.1 (19) |
N1—C3—C4—N2 | 6.0 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1w—H11···Br4i | 0.84 | 2.72 | 3.15 (3) | 113 |
O1w—H12···Br1ii | 0.84 | 2.83 | 3.65 (3) | 167 |
N1—H1···Br1 | 0.86 | 2.92 | 3.568 (11) | 134 |
N2—H2···O1w | 0.86 | 2.04 | 2.80 (2) | 146 |
Symmetry codes: (i) −x+1, y−1/2, −z+3/2; (ii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | (C6H14N2)[CdBr4]·H2O |
Mr | 564.25 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 296 |
a, b, c (Å) | 8.6323 (1), 11.8736 (2), 13.5619 (2) |
V (Å3) | 1390.05 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 13.04 |
Crystal size (mm) | 0.30 × 0.15 × 0.05 |
Data collection | |
Diffractometer | Bruker SMART APEX diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.111, 0.562 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10779, 2451, 2267 |
Rint | 0.034 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.057, 0.187, 1.36 |
No. of reflections | 2451 |
No. of parameters | 128 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 2.21, −2.09 |
Absolute structure | Flack (1983), 1021 Friedel pairs |
Absolute structure parameter | 0.14 (3) |
Computer programs: APEX2 (Bruker, 2008), SAINT (Bruker, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), publCIF (Westrip, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O1w—H11···Br4i | 0.84 | 2.72 | 3.15 (3) | 113 |
O1w—H12···Br1ii | 0.84 | 2.83 | 3.65 (3) | 167 |
N1—H1···Br1 | 0.86 | 2.92 | 3.568 (11) | 134 |
N2—H2···O1w | 0.86 | 2.04 | 2.80 (2) | 146 |
Symmetry codes: (i) −x+1, y−1/2, −z+3/2; (ii) x+1, y, z. |
Acknowledgements
We thank the University of Malaya (RG020/09AFR) for supporting this study.
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