Bis(cyanido-κC)bis­(cyclo­hexyl­amine-κN)mercury(II)

Ejaz; Khan, I.U.; Harrison, W.T.A.

doi:10.1107/S1600536810001042

metal-organic compounds

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ISSN: 2056-9890

Volume 66| Part 2| February 2010| Page m238

https://doi.org/10.1107/S1600536810001042

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Bis(cyanido-κC)bis(cyclohexylamine-κN)mercury(II)

Ejaz,^a Islam Ullah Khan ^a ^* and William T. A. Harrison ^b

^aMaterials Chemistry Laboratory, Department of Chemistry, GC University, Lahore 54000, Pakistan, and ^bDepartment of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland
^*Correspondence e-mail: iuklodhi@yahoo.com

(Received 4 January 2010; accepted 8 January 2010; online 30 January 2010)

In the title compound, [Hg(CN)₂(C₆H₁₃N)₂], the Hg^II ion adopts an extremely distorted HgC₂N₂ tetrahedral coordination. The crystal packing is influenced by weak N—H⋯N hydrogen bonds between the amino groups and the cyanide N atoms, resulting in chains of molecules propagating in [110]. Both cyclohexylamine molecules adopt chair conformations.

Related literature

For related structures, see: Ejaz et al. (2009 ); Cingolani et al. (1987 ).

Experimental

Crystal data

[Hg(CN)₂(C₆H₁₃N)₂]
M_r = 450.98
Triclinic, $[P \overline 1]$
a = 7.9283 (4) Å
b = 9.1791 (5) Å
c = 12.2722 (6) Å
α = 93.972 (3)°
β = 99.179 (3)°
γ = 97.258 (3)°
V = 870.95 (8) Å³
Z = 2
Mo Kα radiation
μ = 8.83 mm⁻¹
T = 293 K
0.31 × 0.23 × 0.15 mm

Data collection

Bruker Kappa APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2007 ) T_min = 0.171, T_max = 0.351
16082 measured reflections
3385 independent reflections
2830 reflections with I > 2σ(I)
R_int = 0.041

Refinement

R[F² > 2σ(F²)] = 0.061
wR(F²) = 0.193
S = 1.10
3385 reflections
172 parameters
H-atom parameters constrained
Δρ_max = 3.17 e Å⁻³
Δρ_min = −1.98 e Å⁻³

Table 1
Selected geometric parameters (Å, °)

Hg1—C13	2.076 (17)
Hg1—C14	2.084 (17)
Hg1—N2	2.404 (12)
Hg1—N1	2.426 (14)

C13—Hg1—C14	145.6 (7)
C13—Hg1—N2	100.1 (6)
C14—Hg1—N2	107.0 (7)
C13—Hg1—N1	101.5 (6)
C14—Hg1—N1	102.3 (7)
N2—Hg1—N1	83.4 (5)

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
N1—H2⋯N3ⁱ	0.90	2.37	3.21 (2)	155
N2—H3⋯N3ⁱ	0.90	2.48	3.31 (2)	154
N2—H4⋯N4ⁱⁱ	0.90	2.37	3.22 (2)	157
Symmetry codes: (i) -x, -y, -z+1; (ii) -x+1, -y+1, -z+1.

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997 ); software used to prepare material for publication: SHELXL97.

Supporting information

Crystal structure: contains datablocks I, global. DOI: https://doi.org/10.1107/S1600536810001042/wm2295sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810001042/wm2295Isup2.hkl

checkCIF report

Comment top

As part of our ongoing studies of MX₂Y₂ complexes (Ejaz et al., 2009), the synthesis and structure of the title compound, (I), (Fig. 1), are now described.

The Hg^II atom in (I) adopts what could be described as an extremely distorted HgC₂N₂ tetrahedral geometry (Table 1), arising from its coordination by two cyanide anions and two cyclohexylamine ligands. As well as the gross deviations of the bond angles from nominal tetrahedral values, the Hg—C and Hg—N bond lengths are very different. Indeed, an alternative description of the structure of (I) could be to start with a nominal linear Hg(CN)₂ molecule, which is then weakly coordinated by the two N-bonded ligands (Cingolani et al., 1987). The cyclohexylamine molecules in (I) adopt chair conformations.

In the crystal, the molecules interact by way of N—H···N hydrogen bonds (Table 2), leading to chains in the structure.

Surprisingly, the Cambridge Structural Database contains just one crystal structure containing an Hg(CN)₂(NR)₂ unit (Cingolani et al., 1987), in which the C—Hg—C bond angles in the two asymmetric molecules are 148.2 (8) and 163.1 (9)°.

Related literature top

For related structures, see: Ejaz et al. (2009); Cingolani et al. (1987).

Experimental top

Mercury(II) cyanide (0.5 g, 2.2 mmol) was dissolved in distilled water (20 ml). Cyclohexylamine (0.44 g, 4.4 mmol) was added and the mixture stirred at room temperature for 15 minutes. A white precipitate formed, which was filtered off, washed with distilled water and dried. Colourless blocks of (I) were recrystallized from methanol.

Structure description top

As part of our ongoing studies of MX₂Y₂ complexes (Ejaz et al., 2009), the synthesis and structure of the title compound, (I), (Fig. 1), are now described.

In the crystal, the molecules interact by way of N—H···N hydrogen bonds (Table 2), leading to chains in the structure.

For related structures, see: Ejaz et al. (2009); Cingolani et al. (1987).

Computing details top

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

	Fig. 1. The molecular structure of (I) showing displacement ellipsoids at the 50% probability level.
	Fig. 2. Unit cell packing in (I) with all C-bound hydrogen atoms omitted for clarity and hydrogen bonds indicated by dashed lines. Symmetry codes: (i) –x, –y, 1–z; (ii) 1–x, 1–y, 1–z.

Bis(cyanido-κC)bis(cyclohexylamine-κN)mercury(II) top

Crystal data top

[Hg(CN)₂(C₆H₁₃N)₂]	V = 870.95 (8) Å³
M_r = 450.98	Z = 2
Triclinic, P1	F(000) = 436
Hall symbol: -P 1	D_x = 1.720 Mg m⁻³
a = 7.9283 (4) Å	Mo Kα radiation, λ = 0.71073 Å
b = 9.1791 (5) Å	µ = 8.83 mm⁻¹
c = 12.2722 (6) Å	T = 293 K
α = 93.972 (3)°	Block, colourless
β = 99.179 (3)°	0.31 × 0.23 × 0.15 mm
γ = 97.258 (3)°

Data collection top

Bruker Kappa APEXII CCD diffractometer	3385 independent reflections
Radiation source: fine-focus sealed tube	2830 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.041
ω scans	θ_max = 26.0°, θ_min = 2.6°
Absorption correction: multi-scan (SADABS; Bruker, 2007)	h = −9→9
T_min = 0.171, T_max = 0.351	k = −11→11
16082 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)] = 0.061	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.193	H-atom parameters constrained
S = 1.10	w = 1/[σ²(F_o²) + (0.0858P)² + 12.3401P] where P = (F_o² + 2F_c²)/3
3385 reflections	(Δ/σ)_max = 0.001
172 parameters	Δρ_max = 3.17 e Å⁻³
0 restraints	Δρ_min = −1.98 e Å⁻³

Crystal data top

[Hg(CN)₂(C₆H₁₃N)₂]	γ = 97.258 (3)°
M_r = 450.98	V = 870.95 (8) Å³
Triclinic, P1	Z = 2
a = 7.9283 (4) Å	Mo Kα radiation
b = 9.1791 (5) Å	µ = 8.83 mm⁻¹
c = 12.2722 (6) Å	T = 293 K
α = 93.972 (3)°	0.31 × 0.23 × 0.15 mm
β = 99.179 (3)°

Data collection top

Bruker Kappa APEXII CCD diffractometer	3385 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2007)	2830 reflections with I > 2σ(I)
T_min = 0.171, T_max = 0.351	R_int = 0.041
16082 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.061	0 restraints
wR(F²) = 0.193	H-atom parameters constrained
S = 1.10	w = 1/[σ²(F_o²) + (0.0858P)² + 12.3401P] where P = (F_o² + 2F_c²)/3
3385 reflections	Δρ_max = 3.17 e Å⁻³
172 parameters	Δρ_min = −1.98 e Å⁻³

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
Hg1	0.15752 (8)	0.30488 (6)	0.45191 (5)	0.0641 (3)
C1	0.363 (3)	0.059 (2)	0.3106 (15)	0.082 (5)
H1A	0.4532	−0.0049	0.3212	0.099*
C2	0.199 (4)	−0.038 (3)	0.272 (2)	0.132 (11)
H2A	0.1036	0.0184	0.2616	0.159*
H2B	0.1784	−0.1096	0.3247	0.159*
C3	0.221 (5)	−0.119 (3)	0.158 (2)	0.155 (14)
H3A	0.3180	−0.1736	0.1694	0.187*
H3B	0.1180	−0.1884	0.1289	0.187*
C4	0.249 (4)	−0.013 (4)	0.077 (2)	0.148 (12)
H4A	0.1556	0.0462	0.0670	0.177*
H4B	0.2538	−0.0644	0.0057	0.177*
C5	0.420 (6)	0.083 (4)	0.123 (3)	0.176 (17)
H5A	0.4461	0.1538	0.0709	0.211*
H5B	0.5116	0.0215	0.1318	0.211*
C6	0.414 (4)	0.166 (3)	0.236 (2)	0.125 (9)
H6A	0.5268	0.2198	0.2672	0.150*
H6B	0.3320	0.2358	0.2269	0.150*
N1	0.3599 (18)	0.1352 (17)	0.4211 (11)	0.074 (4)
H1	0.4662	0.1852	0.4446	0.089*
H2	0.3457	0.0643	0.4673	0.089*
C7	0.197 (3)	0.355 (2)	0.7345 (14)	0.085 (5)
H7	0.0734	0.3208	0.7271	0.102*
C8	0.220 (3)	0.509 (2)	0.7259 (16)	0.096 (6)
H8A	0.1653	0.5275	0.6528	0.115*
H8B	0.3425	0.5431	0.7331	0.115*
C9	0.145 (5)	0.598 (3)	0.814 (2)	0.150 (13)
H9A	0.1665	0.7025	0.8056	0.180*
H9B	0.0215	0.5686	0.8061	0.180*
C10	0.232 (5)	0.566 (3)	0.925 (2)	0.134 (10)
H10A	0.3523	0.6092	0.9350	0.160*
H10B	0.1798	0.6142	0.9812	0.160*
C11	0.222 (5)	0.407 (3)	0.940 (2)	0.137 (11)
H11A	0.1041	0.3673	0.9433	0.164*
H11B	0.2931	0.3946	1.0101	0.164*
C12	0.284 (3)	0.324 (2)	0.8463 (15)	0.097 (6)
H12A	0.4076	0.3512	0.8523	0.117*
H12B	0.2619	0.2191	0.8534	0.117*
N2	0.2619 (18)	0.2820 (14)	0.6440 (9)	0.068 (3)
H3	0.2471	0.1849	0.6529	0.082*
H4	0.3766	0.3111	0.6552	0.082*
C13	−0.073 (2)	0.1629 (18)	0.4292 (15)	0.067 (4)
N3	−0.196 (2)	0.0797 (19)	0.4154 (15)	0.090 (4)
C14	0.282 (2)	0.504 (2)	0.4133 (18)	0.089 (6)
N4	0.352 (3)	0.610 (2)	0.395 (2)	0.116 (6)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Hg1	0.0633 (4)	0.0592 (4)	0.0654 (4)	−0.0021 (2)	0.0064 (3)	0.0050 (3)
C1	0.080 (11)	0.096 (13)	0.067 (10)	0.004 (10)	0.014 (9)	−0.006 (9)
C2	0.16 (2)	0.111 (17)	0.118 (19)	−0.051 (16)	0.064 (18)	−0.043 (15)
C3	0.24 (4)	0.117 (19)	0.090 (17)	−0.06 (2)	0.06 (2)	−0.061 (16)
C4	0.15 (2)	0.22 (4)	0.058 (13)	0.00 (2)	0.005 (14)	−0.031 (18)
C5	0.26 (5)	0.16 (3)	0.11 (2)	−0.05 (3)	0.11 (3)	−0.016 (19)
C6	0.16 (2)	0.118 (19)	0.086 (15)	−0.035 (17)	0.026 (15)	−0.003 (13)
N1	0.069 (8)	0.088 (9)	0.060 (8)	0.005 (7)	0.009 (6)	−0.014 (7)
C7	0.111 (15)	0.088 (12)	0.052 (9)	0.017 (11)	0.007 (9)	−0.010 (8)
C8	0.121 (16)	0.095 (14)	0.065 (11)	0.037 (12)	−0.005 (10)	−0.023 (10)
C9	0.21 (3)	0.13 (2)	0.11 (2)	0.09 (2)	0.02 (2)	−0.026 (17)
C10	0.20 (3)	0.12 (2)	0.083 (16)	0.03 (2)	0.025 (18)	−0.032 (14)
C11	0.20 (3)	0.13 (2)	0.074 (14)	−0.01 (2)	0.041 (17)	−0.019 (14)
C12	0.142 (19)	0.086 (13)	0.061 (11)	0.013 (13)	0.013 (11)	0.003 (9)
N2	0.086 (9)	0.064 (7)	0.045 (6)	−0.024 (6)	0.008 (6)	0.005 (5)
C13	0.056 (9)	0.064 (9)	0.083 (11)	0.010 (7)	0.015 (8)	0.018 (8)
N3	0.072 (10)	0.090 (11)	0.103 (12)	0.013 (9)	0.001 (8)	0.012 (9)
C14	0.067 (10)	0.084 (12)	0.114 (15)	−0.004 (9)	0.007 (10)	0.048 (11)
N4	0.090 (12)	0.100 (13)	0.153 (19)	−0.005 (10)	0.013 (12)	0.034 (13)

Geometric parameters (Å, º) top

Hg1—C13	2.076 (17)	N1—H2	0.9000
Hg1—C14	2.084 (17)	C7—C8	1.41 (3)
Hg1—N2	2.404 (12)	C7—N2	1.45 (2)
Hg1—N1	2.426 (14)	C7—C12	1.50 (3)
C1—C6	1.45 (3)	C7—H7	0.9800
C1—C2	1.47 (3)	C8—C9	1.55 (3)
C1—N1	1.49 (2)	C8—H8A	0.9700
C1—H1A	0.9800	C8—H8B	0.9700
C2—C3	1.58 (3)	C9—C10	1.48 (4)
C2—H2A	0.9700	C9—H9A	0.9700
C2—H2B	0.9700	C9—H9B	0.9700
C3—C4	1.45 (4)	C10—C11	1.48 (4)
C3—H3A	0.9700	C10—H10A	0.9700
C3—H3B	0.9700	C10—H10B	0.9700
C4—C5	1.53 (4)	C11—C12	1.52 (3)
C4—H4A	0.9700	C11—H11A	0.9700
C4—H4B	0.9700	C11—H11B	0.9700
C5—C6	1.55 (3)	C12—H12A	0.9700
C5—H5A	0.9700	C12—H12B	0.9700
C5—H5B	0.9700	N2—H3	0.9000
C6—H6A	0.9700	N2—H4	0.9000
C6—H6B	0.9700	C13—N3	1.14 (2)
N1—H1	0.9000	C14—N4	1.12 (2)

C13—Hg1—C14	145.6 (7)	Hg1—N1—H2	106.6
C13—Hg1—N2	100.1 (6)	H1—N1—H2	106.5
C14—Hg1—N2	107.0 (7)	C8—C7—N2	109.0 (17)
C13—Hg1—N1	101.5 (6)	C8—C7—C12	109.4 (16)
C14—Hg1—N1	102.3 (7)	N2—C7—C12	113.0 (17)
N2—Hg1—N1	83.4 (5)	C8—C7—H7	108.4
C6—C1—C2	116 (2)	N2—C7—H7	108.4
C6—C1—N1	109.7 (17)	C12—C7—H7	108.4
C2—C1—N1	109.9 (16)	C7—C8—C9	114 (2)
C6—C1—H1A	106.8	C7—C8—H8A	108.8
C2—C1—H1A	106.8	C9—C8—H8A	108.8
N1—C1—H1A	106.8	C7—C8—H8B	108.8
C1—C2—C3	105 (2)	C9—C8—H8B	108.8
C1—C2—H2A	110.7	H8A—C8—H8B	107.7
C3—C2—H2A	110.7	C10—C9—C8	107 (2)
C1—C2—H2B	110.7	C10—C9—H9A	110.3
C3—C2—H2B	110.7	C8—C9—H9A	110.3
H2A—C2—H2B	108.8	C10—C9—H9B	110.3
C4—C3—C2	111 (2)	C8—C9—H9B	110.3
C4—C3—H3A	109.4	H9A—C9—H9B	108.5
C2—C3—H3A	109.4	C11—C10—C9	114 (2)
C4—C3—H3B	109.4	C11—C10—H10A	108.8
C2—C3—H3B	109.4	C9—C10—H10A	108.8
H3A—C3—H3B	108.0	C11—C10—H10B	108.8
C3—C4—C5	106 (3)	C9—C10—H10B	108.8
C3—C4—H4A	110.5	H10A—C10—H10B	107.7
C5—C4—H4A	110.5	C10—C11—C12	111 (2)
C3—C4—H4B	110.5	C10—C11—H11A	109.4
C5—C4—H4B	110.5	C12—C11—H11A	109.4
H4A—C4—H4B	108.7	C10—C11—H11B	109.4
C4—C5—C6	111 (3)	C12—C11—H11B	109.4
C4—C5—H5A	109.4	H11A—C11—H11B	108.0
C6—C5—H5A	109.4	C7—C12—C11	113 (2)
C4—C5—H5B	109.4	C7—C12—H12A	109.1
C6—C5—H5B	109.4	C11—C12—H12A	109.1
H5A—C5—H5B	108.0	C7—C12—H12B	109.1
C1—C6—C5	109 (2)	C11—C12—H12B	109.1
C1—C6—H6A	110.0	H12A—C12—H12B	107.8
C5—C6—H6A	110.0	C7—N2—Hg1	123.3 (12)
C1—C6—H6B	110.0	C7—N2—H3	106.5
C5—C6—H6B	110.0	Hg1—N2—H3	106.5
H6A—C6—H6B	108.4	C7—N2—H4	106.5
C1—N1—Hg1	123.1 (12)	Hg1—N2—H4	106.5
C1—N1—H1	106.6	H3—N2—H4	106.5
Hg1—N1—H1	106.6	N3—C13—Hg1	177.0 (15)
C1—N1—H2	106.6	N4—C14—Hg1	178.2 (19)

C6—C1—C2—C3	57 (3)	N2—C7—C8—C9	176 (2)
N1—C1—C2—C3	−177 (2)	C12—C7—C8—C9	−60 (3)
C1—C2—C3—C4	−62 (4)	C7—C8—C9—C10	59 (3)
C2—C3—C4—C5	64 (4)	C8—C9—C10—C11	−53 (4)
C3—C4—C5—C6	−60 (4)	C9—C10—C11—C12	52 (4)
C2—C1—C6—C5	−56 (4)	C8—C7—C12—C11	55 (3)
N1—C1—C6—C5	179 (3)	N2—C7—C12—C11	177 (2)
C4—C5—C6—C1	55 (4)	C10—C11—C12—C7	−51 (3)
C6—C1—N1—Hg1	66 (2)	C8—C7—N2—Hg1	−58 (2)
C2—C1—N1—Hg1	−63 (2)	C12—C7—N2—Hg1	−179.6 (13)
C13—Hg1—N1—C1	69.3 (14)	C13—Hg1—N2—C7	−77.6 (14)
C14—Hg1—N1—C1	−85.7 (14)	C14—Hg1—N2—C7	80.9 (14)
N2—Hg1—N1—C1	168.3 (14)	N1—Hg1—N2—C7	−178.2 (14)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
N1—H2···N3ⁱ	0.90	2.37	3.21 (2)	155
N2—H3···N3ⁱ	0.90	2.48	3.31 (2)	154
N2—H4···N4ⁱⁱ	0.90	2.37	3.22 (2)	157

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

Experimental details

Crystal data
Chemical formula	[Hg(CN)₂(C₆H₁₃N)₂]
M_r	450.98
Crystal system, space group	Triclinic, P1
Temperature (K)	293
a, b, c (Å)	7.9283 (4), 9.1791 (5), 12.2722 (6)
α, β, γ (°)	93.972 (3), 99.179 (3), 97.258 (3)
V (Å³)	870.95 (8)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	8.83
Crystal size (mm)	0.31 × 0.23 × 0.15

Data collection
Diffractometer	Bruker Kappa APEXII CCD
Absorption correction	Multi-scan (SADABS; Bruker, 2007)
T_min, T_max	0.171, 0.351
No. of measured, independent and observed [I > 2σ(I)] reflections	16082, 3385, 2830
R_int	0.041
(sin θ/λ)_max (Å⁻¹)	0.617

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.061, 0.193, 1.10
No. of reflections	3385
No. of parameters	172
H-atom treatment	H-atom parameters constrained
	w = 1/[σ²(F_o²) + (0.0858P)² + 12.3401P] where P = (F_o² + 2F_c²)/3
Δρ_max, Δρ_min (e Å⁻³)	3.17, −1.98

Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997).

Selected geometric parameters (Å, º) top

Hg1—C13	2.076 (17)	Hg1—N2	2.404 (12)
Hg1—C14	2.084 (17)	Hg1—N1	2.426 (14)

C13—Hg1—C14	145.6 (7)	C13—Hg1—N1	101.5 (6)
C13—Hg1—N2	100.1 (6)	C14—Hg1—N1	102.3 (7)
C14—Hg1—N2	107.0 (7)	N2—Hg1—N1	83.4 (5)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
N1—H2···N3ⁱ	0.90	2.37	3.21 (2)	155
N2—H3···N3ⁱ	0.90	2.48	3.31 (2)	154
N2—H4···N4ⁱⁱ	0.90	2.37	3.22 (2)	157

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

Acknowledgements

IUK thanks the Higher Education Commission of Pakistan for its financial support under the project `Strengthening of Materials Chemistry Laboratory at GCUL'.

References

Bruker (2007). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Cingolani, A., Lorenzotti, A., Lobbia, G. G., Leonesi, D., Bonati, F. & Bovio, B. (1987). Inorg. Chim. Acta, 132, 167–176. CSD CrossRef CAS Web of Science Google Scholar
Ejaz, Sahin, O. & Khan, I. U. (2009). Acta Cryst. E65, m1457. Web of Science CSD CrossRef IUCr Journals Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar