Dichlorido[methyl 2-(quinolin-8-yl­oxy-κ2N,O)acetate-κO]mercury(II)

Wang, Y.-H.; Zhu, X.-H.; Song, R.-F.

doi:10.1107/S1600536812026591

metal-organic compounds

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ISSN: 2056-9890

Volume 68| Part 7| July 2012| Page m951

https://doi.org/10.1107/S1600536812026591

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Dichlorido[methyl 2-(quinolin-8-yloxy-κ²N,O)acetate-κO]mercury(II)

Yu-Hong Wang,^a ^* Xue-Hua Zhu ^a and Rui-Feng Song ^a

^aSchool of Chemistry and Bioengineering, Suzhou University of Science and Technology, Suzhou 215009, People's Republic of China
^*Correspondence e-mail: wangyuhong@mail.usts.edu.cn

(Received 29 May 2012; accepted 12 June 2012; online 20 June 2012)

In the neutral title complex, [HgCl₂(C₁₂H₁₁NO₃)], the Hg^II ion is pentacoordinated by two Cl atoms, one N atom and two weakly coordinating O atoms from the methyl 2-(quinolin-8-yloxy)acetate ligand. The coordination around the Hg^II ion may be described as highly distorted trigonal–bipyramidal. Centrosymmetric dimers are formed by an additional weak Hg⋯Cl interaction, leading to a distorted octahedral coordination geometry around the Hg^II ion.

Related literature

For the use of quinolin-8-yloxy acetic acid and its derivatives as ligands in transition metal complexes, see: Cheng et al. (2007 ); Song et al. (2004 ); Wang et al. (2005 , 2008 ).

Experimental

Crystal data

[HgCl₂(C₁₂H₁₁NO₃)]
M_r = 488.71
Triclinic, $[P \overline 1]$
a = 7.2644 (4) Å
b = 9.7607 (2) Å
c = 10.8411 (6) Å
α = 71.317 (7)°
β = 75.453 (7)°
γ = 69.816 (8)°
V = 674.87 (5) Å³
Z = 2
Mo Kα radiation
μ = 11.80 mm⁻¹
T = 223 K
0.50 × 0.25 × 0.10 mm

Data collection

Rigaku Saturn diffractometer
Absorption correction: multi-scan (REQAB; Jacobson, 1998 ) T_min = 0.067, T_max = 0.385
5090 measured reflections
2432 independent reflections
2330 reflections with I > 2σ(I)
R_int = 0.050

Refinement

R[F² > 2σ(F²)] = 0.052
wR(F²) = 0.142
S = 1.07
2432 reflections
174 parameters
H-atom parameters constrained
Δρ_max = 3.58 e Å⁻³
Δρ_min = −2.39 e Å⁻³

Table 1
Selected bond lengths (Å)

Hg1—Cl1	2.340 (2)
Hg1—Cl2	2.350 (2)
Hg1—N1	2.463 (6)
Hg1—O1	2.746 (6)
Hg1—O3	2.876 (6)
Hg1—Cl1ⁱ	3.204 (2)
Symmetry code: (i) -x+1, -y, -z+2.

Data collection: CrystalClear (Rigaku/MSC, 2001 ); cell refinement: CrystalClear; data reduction: CrystalStructure (Rigaku/MSC, 2004 ); 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 I, global. DOI: https://doi.org/10.1107/S1600536812026591/im2385sup1.cif

Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812026591/im2385Isup2.hkl

checkCIF report

Comment top

Quinolin-8-yloxy acetic acid and it's derivatives are well known ligands in transition metal coordination compounds (Cheng et al., 2007; Song et al., 2004; Wang et al., 2005; Wang et al., 2008). Some metal complexes with such ligands are being prepared because of their intriguing structural diversity and potential uses as functional materials (Cheng et al., 2007; Song et al., 2004; Wang et al., 2005; Wang et al., 2008). So, we prepared the title Hg^II complex with methyl-2-(quinoline-8-yloxy)-acetate ligand, (I).

In the title compound, the Hg^II atom is five-coordinated by two Cl atoms, one N atom and two O atoms from methyl-2-(quinoline-8-yloxy)-acetate ligand, forming a highly distorted trigonal bipyramidal geometry (Fig. 1). Hg—Cl bond lengths are 2.340 (2) and 2.350 (2) Å, and Hg—N bond lengths are 2.463 (6) Å. The weak coordinative Hg—O bond lengths are 2.746 (6) Å and 2.876 (6) Å. Angles around Hg are in a range of 56.55 (16)–153.41 (8)° (Table 1). If these are considered to be chemically signifcant interactions, two monoclear Hg complexes are formed into the centrosymmetric dimers by weak Hg—Cl interactions (Fig. 1). So, the coordination around Hg atom can act as a distrorted octahedral geometry.

The molecular packing is controlled by these dimers and intermolecular π-π interactions; the quinoline rings are separated by 3.527 (1) and 3.813 (1) Å (Fig. 2).

Related literature top

For the use of quinolin-8-yloxy acetic acid and its derivatives as ligands in transition metal complexes, see: Cheng et al. (2007); Song et al. (2004); Wang et al. (2005, 2008).

Experimental top

Quinolin-8-yloxy acetic acid (0.0203 g, 0.1 mmol), HgCl₂ (0.0272 g, 0.1 mmol), methanol (3 ml) and triethylamine (0.0101 g, 0.1 mmol) were placed in a thick Pyrex tube and heated to 130 C° for 5 days. After cooling at a rate of 5 C°/h to ambient temperature, yellow prismatic crystals were collected, washed with anhydrous ethanol, and dried at room temperature. The yield is 51% based on quinolin-8-yloxy acetic acid. Analysis found: C, 29.91; H, 2.30; N, 2.87%; calculated for C₁₂H₁₁Cl₂HgNO₃: C, 29.49; H, 2.27; N, 2.87%.

Structure description top

The molecular packing is controlled by these dimers and intermolecular π-π interactions; the quinoline rings are separated by 3.527 (1) and 3.813 (1) Å (Fig. 2).

For the use of quinolin-8-yloxy acetic acid and its derivatives as ligands in transition metal complexes, see: Cheng et al. (2007); Song et al. (2004); Wang et al. (2005, 2008).

Computing details top

Data collection: CrystalClear (Rigaku/MSC, 2001); cell refinement: CrystalClear (Rigaku/MSC, 2001); data reduction: CrystalStructure (Rigaku/MSC, 2004); 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 (I), with 30% probability displacement ellipsoids [symmetry codes: (i) 1 - x, -y, 2 - z]. The dashed line indicates the weak Hg···Cl interaction.
	Fig. 2. A view of intermolecular π-π interactions, interactions between the parallel quinoline rings of neighbouring complexes [symmetry codes: (i) 1 - x, 1 - y, 2 - z; (ii) -x, 1 - y, 2 - z].

Dichlorido[methyl 2-(quinolin-8-yloxy-κ²N,O)acetate-κO]mercury(II) top

Crystal data top

[HgCl₂(C₁₂H₁₁NO₃)]	Z = 2
M_r = 488.71	F(000) = 456
Triclinic, P1	D_x = 2.405 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71075 Å
a = 7.2644 (4) Å	Cell parameters from 3438 reflections
b = 9.7607 (2) Å	θ = 3.0–27.5°
c = 10.8411 (6) Å	µ = 11.80 mm⁻¹
α = 71.317 (7)°	T = 223 K
β = 75.453 (7)°	Prism, yellow
γ = 69.816 (8)°	0.50 × 0.25 × 0.10 mm
V = 674.87 (5) Å³

Data collection top

Rigaku Saturn diffractometer	2432 independent reflections
Radiation source: fine-focus sealed tube	2330 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.050
Detector resolution: 14.63 pixels mm^-1	θ_max = 25.5°, θ_min = 3.0°
ω scans	h = −8→8
Absorption correction: multi-scan (REQAB; Jacobson, 1998)	k = −11→9
T_min = 0.067, T_max = 0.385	l = −13→10
5090 measured reflections

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)] = 0.052	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.142	H-atom parameters constrained
S = 1.07	w = 1/[σ²(F_o²) + (0.114P)²] where P = (F_o² + 2F_c²)/3
2432 reflections	(Δ/σ)_max = 0.001
174 parameters	Δρ_max = 3.58 e Å⁻³
0 restraints	Δρ_min = −2.39 e Å⁻³

Crystal data top

[HgCl₂(C₁₂H₁₁NO₃)]	γ = 69.816 (8)°
M_r = 488.71	V = 674.87 (5) Å³
Triclinic, P1	Z = 2
a = 7.2644 (4) Å	Mo Kα radiation
b = 9.7607 (2) Å	µ = 11.80 mm⁻¹
c = 10.8411 (6) Å	T = 223 K
α = 71.317 (7)°	0.50 × 0.25 × 0.10 mm
β = 75.453 (7)°

Data collection top

Rigaku Saturn diffractometer	2432 independent reflections
Absorption correction: multi-scan (REQAB; Jacobson, 1998)	2330 reflections with I > 2σ(I)
T_min = 0.067, T_max = 0.385	R_int = 0.050
5090 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.052	0 restraints
wR(F²) = 0.142	H-atom parameters constrained
S = 1.07	Δρ_max = 3.58 e Å⁻³
2432 reflections	Δρ_min = −2.39 e Å⁻³
174 parameters

Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
Hg1	0.48080 (4)	0.17195 (3)	0.82524 (2)	0.0283 (2)
Cl1	0.7584 (4)	0.0079 (3)	0.9214 (2)	0.0343 (5)
Cl2	0.2251 (4)	0.2330 (3)	0.7032 (2)	0.0328 (5)
O1	0.5887 (9)	0.4276 (6)	0.6794 (5)	0.0267 (12)
O2	0.9795 (10)	0.3004 (7)	0.4386 (6)	0.0293 (13)
O3	0.7782 (11)	0.1803 (7)	0.5930 (6)	0.0350 (15)
N1	0.3624 (11)	0.3914 (8)	0.9197 (6)	0.0229 (14)
C1	0.2572 (13)	0.3719 (9)	1.0411 (8)	0.0250 (17)
H1	0.2485	0.2744	1.0883	0.030*
C2	0.1591 (14)	0.4918 (11)	1.1008 (8)	0.0291 (19)
H2	0.0929	0.4727	1.1882	0.035*
C3	0.1596 (13)	0.6348 (10)	1.0327 (8)	0.0280 (18)
H3	0.0892	0.7160	1.0707	0.034*
C4	0.2680 (12)	0.6597 (9)	0.9034 (7)	0.0229 (16)
C5	0.2793 (15)	0.8066 (10)	0.8262 (9)	0.032 (2)
H5	0.2102	0.8915	0.8595	0.038*
C6	0.3906 (15)	0.8224 (9)	0.7043 (9)	0.0306 (19)
H6	0.3995	0.9189	0.6541	0.037*
C7	0.4920 (14)	0.6985 (10)	0.6522 (8)	0.0288 (19)
H7	0.5649	0.7133	0.5665	0.035*
C8	0.4873 (13)	0.5564 (9)	0.7230 (8)	0.0232 (16)
C9	0.3727 (12)	0.5317 (9)	0.8506 (7)	0.0226 (16)
C10	0.7341 (16)	0.4428 (10)	0.5679 (8)	0.030 (2)
H10A	0.8339	0.4787	0.5842	0.037*
H10B	0.6737	0.5164	0.4927	0.037*
C11	0.8301 (13)	0.2914 (9)	0.5380 (7)	0.0221 (16)
C12	1.0873 (14)	0.1595 (10)	0.3990 (9)	0.0313 (19)
H12A	1.1489	0.0841	0.4717	0.047*
H12B	1.1890	0.1780	0.3236	0.047*
H12C	0.9953	0.1234	0.3756	0.047*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Hg1	0.0304 (3)	0.0247 (3)	0.0247 (3)	−0.00519 (19)	−0.00101 (17)	−0.00514 (17)
Cl1	0.0304 (12)	0.0320 (12)	0.0350 (11)	−0.0028 (10)	−0.0050 (9)	−0.0083 (9)
Cl2	0.0360 (13)	0.0344 (11)	0.0255 (10)	−0.0096 (10)	−0.0038 (9)	−0.0057 (8)
O1	0.027 (3)	0.025 (3)	0.022 (3)	−0.011 (3)	0.017 (2)	−0.009 (2)
O2	0.030 (3)	0.025 (3)	0.028 (3)	−0.006 (3)	0.010 (3)	−0.012 (2)
O3	0.041 (4)	0.025 (3)	0.034 (3)	−0.013 (3)	0.014 (3)	−0.012 (2)
N1	0.027 (4)	0.023 (3)	0.019 (3)	−0.008 (3)	0.002 (3)	−0.009 (3)
C1	0.024 (4)	0.030 (4)	0.021 (4)	−0.007 (4)	0.000 (3)	−0.009 (3)
C2	0.029 (5)	0.039 (5)	0.019 (4)	−0.012 (4)	0.005 (4)	−0.012 (3)
C3	0.018 (4)	0.038 (5)	0.030 (4)	−0.005 (4)	0.003 (3)	−0.019 (4)
C4	0.020 (4)	0.024 (4)	0.022 (4)	−0.001 (3)	0.002 (3)	−0.011 (3)
C5	0.041 (6)	0.025 (4)	0.034 (4)	−0.012 (4)	0.000 (4)	−0.014 (4)
C6	0.034 (5)	0.017 (4)	0.034 (5)	−0.004 (4)	−0.003 (4)	−0.003 (3)
C7	0.035 (5)	0.028 (4)	0.022 (4)	−0.009 (4)	−0.002 (4)	−0.005 (3)
C8	0.021 (4)	0.020 (4)	0.024 (4)	−0.003 (3)	0.003 (3)	−0.009 (3)
C9	0.018 (4)	0.030 (4)	0.020 (3)	−0.006 (3)	−0.001 (3)	−0.009 (3)
C10	0.041 (6)	0.032 (5)	0.018 (4)	−0.015 (4)	0.010 (4)	−0.012 (3)
C11	0.023 (4)	0.024 (4)	0.019 (4)	−0.009 (3)	0.005 (3)	−0.008 (3)
C12	0.023 (5)	0.029 (5)	0.035 (5)	−0.002 (4)	0.011 (4)	−0.018 (4)

Geometric parameters (Å, º) top

Hg1—Cl1	2.340 (2)	C3—C4	1.416 (12)
Hg1—Cl2	2.350 (2)	C3—H3	0.9400
Hg1—N1	2.463 (6)	C4—C9	1.432 (11)
Hg1—O1	2.746 (6)	C4—C5	1.428 (12)
Hg1—O3	2.876 (6)	C5—C6	1.357 (13)
Hg1—Cl1ⁱ	3.204 (2)	C5—H5	0.9400
O1—C8	1.383 (10)	C6—C7	1.392 (13)
O1—C10	1.396 (10)	C6—H6	0.9400
O2—C11	1.329 (10)	C7—C8	1.361 (12)
O2—C12	1.468 (10)	C7—H7	0.9400
O3—C11	1.195 (10)	C8—C9	1.418 (11)
N1—C1	1.337 (11)	C10—C11	1.502 (12)
N1—C9	1.352 (11)	C10—H10A	0.9800
C1—C2	1.405 (12)	C10—H10B	0.9800
C1—H1	0.9400	C12—H12A	0.9700
C2—C3	1.355 (14)	C12—H12B	0.9700
C2—H2	0.9400	C12—H12C	0.9700

Cl1—Hg1—Cl2	153.41 (8)	C3—C4—C5	122.3 (7)
Cl1—Hg1—N1	106.61 (17)	C9—C4—C5	119.5 (7)
Cl2—Hg1—N1	99.30 (17)	C6—C5—C4	119.5 (8)
Cl1—Hg1—O1	105.43 (15)	C6—C5—H5	120.3
Cl2—Hg1—O1	91.75 (15)	C4—C5—H5	120.3
N1—Hg1—O1	62.08 (19)	C5—C6—C7	121.3 (8)
Cl1—Hg1—O3	80.81 (15)	C5—C6—H6	119.4
Cl2—Hg1—O3	92.53 (16)	C7—C6—H6	119.4
N1—Hg1—O3	117.7 (2)	C8—C7—C6	121.2 (8)
O1—Hg1—O3	56.55 (16)	C8—C7—H7	119.4
Cl1—Hg1—Cl1ⁱ	83.50 (8)	C6—C7—H7	119.4
Cl2—Hg1—Cl1ⁱ	90.92 (7)	C7—C8—O1	124.5 (7)
N1—Hg1—Cl1ⁱ	89.63 (16)	C7—C8—C9	120.5 (7)
O1—Hg1—Cl1ⁱ	151.64 (12)	O1—C8—C9	115.1 (7)
O3—Hg1—Cl1ⁱ	151.45 (13)	N1—C9—C8	120.7 (7)
C8—O1—C10	116.4 (6)	N1—C9—C4	121.2 (7)
C8—O1—Hg1	115.6 (4)	C8—C9—C4	118.0 (7)
C10—O1—Hg1	128.0 (5)	O1—C10—C11	108.5 (7)
C11—O2—C12	115.3 (7)	O1—C10—H10A	110.0
C11—O3—Hg1	121.0 (5)	C11—C10—H10A	110.0
C1—N1—C9	119.1 (7)	O1—C10—H10B	110.0
C1—N1—Hg1	116.1 (5)	C11—C10—H10B	110.0
C9—N1—Hg1	124.1 (5)	H10A—C10—H10B	108.4
N1—C1—C2	122.4 (8)	O3—C11—O2	124.9 (8)
N1—C1—H1	118.8	O3—C11—C10	125.5 (8)
C2—C1—H1	118.8	O2—C11—C10	109.6 (7)
C3—C2—C1	120.2 (8)	O2—C12—H12A	109.5
C3—C2—H2	119.9	O2—C12—H12B	109.5
C1—C2—H2	119.9	H12A—C12—H12B	109.5
C2—C3—C4	118.8 (8)	O2—C12—H12C	109.5
C2—C3—H3	120.6	H12A—C12—H12C	109.5
C4—C3—H3	120.6	H12B—C12—H12C	109.5
C3—C4—C9	118.2 (7)

Cl1—Hg1—O1—C8	−113.6 (5)	C3—C4—C5—C6	178.0 (9)
Cl2—Hg1—O1—C8	86.9 (5)	C9—C4—C5—C6	−0.6 (13)
N1—Hg1—O1—C8	−12.7 (5)	C4—C5—C6—C7	0.9 (15)
O3—Hg1—O1—C8	178.8 (6)	C5—C6—C7—C8	−1.8 (15)
Cl1ⁱ—Hg1—O1—C8	−8.3 (7)	C6—C7—C8—O1	−178.0 (8)
Cl1—Hg1—O1—C10	65.7 (7)	C6—C7—C8—C9	2.2 (14)
Cl2—Hg1—O1—C10	−93.8 (7)	C10—O1—C8—C7	13.2 (13)
N1—Hg1—O1—C10	166.6 (8)	Hg1—O1—C8—C7	−167.4 (7)
O3—Hg1—O1—C10	−1.9 (7)	C10—O1—C8—C9	−167.0 (8)
Cl1ⁱ—Hg1—O1—C10	171.0 (6)	Hg1—O1—C8—C9	12.4 (9)
Cl1—Hg1—O3—C11	−110.2 (7)	C1—N1—C9—C8	178.2 (8)
Cl2—Hg1—O3—C11	95.7 (7)	Hg1—N1—C9—C8	−11.9 (11)
N1—Hg1—O3—C11	−6.1 (8)	C1—N1—C9—C4	−2.1 (11)
O1—Hg1—O3—C11	5.3 (6)	Hg1—N1—C9—C4	167.8 (6)
Cl1ⁱ—Hg1—O3—C11	−167.7 (5)	C7—C8—C9—N1	177.9 (8)
Cl1—Hg1—N1—C1	−78.3 (6)	O1—C8—C9—N1	−1.9 (11)
Cl2—Hg1—N1—C1	95.7 (6)	C7—C8—C9—C4	−1.8 (12)
O1—Hg1—N1—C1	−177.3 (7)	O1—C8—C9—C4	178.4 (7)
O3—Hg1—N1—C1	−166.5 (5)	C3—C4—C9—N1	2.7 (12)
Cl1ⁱ—Hg1—N1—C1	4.8 (6)	C5—C4—C9—N1	−178.7 (8)
Cl1—Hg1—N1—C9	111.5 (6)	C3—C4—C9—C8	−177.6 (8)
Cl2—Hg1—N1—C9	−74.5 (6)	C5—C4—C9—C8	1.0 (11)
O1—Hg1—N1—C9	12.5 (6)	C8—O1—C10—C11	178.6 (7)
O3—Hg1—N1—C9	23.4 (7)	Hg1—O1—C10—C11	−0.7 (11)
Cl1ⁱ—Hg1—N1—C9	−165.4 (6)	Hg1—O3—C11—O2	173.0 (6)
C9—N1—C1—C2	−1.0 (12)	Hg1—O3—C11—C10	−8.8 (12)
Hg1—N1—C1—C2	−171.7 (7)	C12—O2—C11—O3	−1.6 (12)
N1—C1—C2—C3	3.6 (14)	C12—O2—C11—C10	179.9 (7)
C1—C2—C3—C4	−2.9 (13)	O1—C10—C11—O3	6.4 (13)
C2—C3—C4—C9	−0.1 (12)	O1—C10—C11—O2	−175.1 (7)
C2—C3—C4—C5	−178.7 (9)

Symmetry code: (i) −x+1, −y, −z+2.

Experimental details

Crystal data
Chemical formula	[HgCl₂(C₁₂H₁₁NO₃)]
M_r	488.71
Crystal system, space group	Triclinic, P1
Temperature (K)	223
a, b, c (Å)	7.2644 (4), 9.7607 (2), 10.8411 (6)
α, β, γ (°)	71.317 (7), 75.453 (7), 69.816 (8)
V (Å³)	674.87 (5)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	11.80
Crystal size (mm)	0.50 × 0.25 × 0.10

Data collection
Diffractometer	Rigaku Saturn
Absorption correction	Multi-scan (REQAB; Jacobson, 1998)
T_min, T_max	0.067, 0.385
No. of measured, independent and observed [I > 2σ(I)] reflections	5090, 2432, 2330
R_int	0.050
(sin θ/λ)_max (Å⁻¹)	0.606

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.052, 0.142, 1.07
No. of reflections	2432
No. of parameters	174
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	3.58, −2.39

Computer programs: CrystalClear (Rigaku/MSC, 2001), CrystalStructure (Rigaku/MSC, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

Selected bond lengths (Å) top

Hg1—Cl1	2.340 (2)	Hg1—O1	2.746 (6)
Hg1—Cl2	2.350 (2)	Hg1—O3	2.876 (6)
Hg1—N1	2.463 (6)	Hg1—Cl1ⁱ	3.204 (2)

Symmetry code: (i) −x+1, −y, −z+2.

Acknowledgements

The work was supported by the Science and Technology Foundation of the Ministry of Development of China (2010-K6–8).

References

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