metal-organic compounds
Dibromido(2,2′-dimethyl-4,4′-bi-1,3-thiazole-κ2N,N′)mercury(II)
aDepartment of Chemistry, Islamic Azad University, North Tehran Branch, Tehran, Iran
*Correspondence e-mail: anita_abedi@yahoo.com
The 2(C8H8N2S2)], contains two crystallographically independent molecules. The HgII atoms are four-coordinated in a distorted tetrahedral geometry by two N atoms from a 2,2′-dimethyl-4,4′-bi-1,3-thiazole ligand and two Br atoms. In the intermolecular C—H⋯Br hydrogen bonds and π–π contacts between the thiazole rings [centroid–centroid distances = 3.670 (3) and 3.614 (2) Å] stabilize the structure.
of the title compound, [HgBrRelated literature
For metal complexes with 2,2′-dimethyl-4,4′-bithiazole ligands, see: Abedi & Yahyazade Bali (2010); Al-Hashemi et al. (2009, 2010); Khavasi et al. (2008); Notash et al. (2008, 2009). For related structures, see: Kalateh et al. (2008); Safari et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell 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: SHELXTL (Sheldrick, 2008) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810051494/hy2386sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810051494/hy2386Isup2.hkl
For the preparation of the title compound, a solution of dm4bt (0.26 g, 1.3 mmol) in methanol (15 ml) was added to a solution of HgBr2 (0.47 g, 1.3 mmol) in methanol (15 ml) at room temperature. Crystals suitable for X-ray diffraction experiment were obtained by methanol diffusion into a colorless solution in DMSO after one week (yield: 0.52 g, 71.8%).
H atoms were positioned geometrically and refined as riding atoms, with C—H = 0.95 (CH) and 0.98 (CH3) Å and with Uiso(H) = 1.2(1.5 for methyl)Ueq(C). The highest residual electron density was found at 0.85 Å from Hg2 atom and the deepest hole at 0.70 Å from Hg1 atom.
Recently, we reported the synthesis and
of [HgI2(dm4bt)] (dm4bt is 2,2'-dimethyl-4,4'-bithiazole) (Abedi & Yahyazade Bali, 2010). Dm4bt is a good bidentate ligand, and numerous complexes with dm4bt have been prepared, such as that of zinc (Khavasi et al., 2008), thallium (Notash et al., 2008), cadmium (Notash et al., 2009) and copper (Al-Hashemi et al., 2009, 2010). For further investigation of dm4bt, we synthesis the title complex and report herein its crystal structure.The
of the title compound (Fig. 1) contains two crystallographically independent molecules. The HgII atom is four-coordinated in a distorted tetrahedral configuration by two N atoms from a dm4bt ligand and two Br atoms. The Hg—N and Hg—Br bond lengths (Table 1) and angles are within normal range found in [Hg(SCN)2(dm4bt)] (Safari et al., 2009) and {HgBr2[NH(py)2]} [NH(py)2 is di-2-pyridylamine] (Kalateh et al., 2008).In the π–π contacts (Fig. 2) between the thiazole rings, Cg1···Cg2i and Cg3···Cg4ii [symmetry codes: (i) 2-x, 1-y, -z; (ii) 1-x, 2-y, 1-z. Cg1, Cg2, Cg3 and Cg4 are the centroids of the rings S1/C1/N1/C3/C2, S2/C4/N2/C6/C5, S3/C9/N3/C11/C10 and S4/C12/N4/C14/C13, respectively] stabilize the structure, with centroid–centroid distances of 3.670 (3) and 3.614 (2) Å.
intermolecular C—H···Br hydrogen bonds (Table 2) andFor metal complexes with 2,2'-dimethyl-4,4'-bithiazole ligands, see: Abedi & Yahyazade Bali (2010); Al-Hashemi et al. (2009, 2010); Khavasi et al. (2008); Notash et al. (2008, 2009). For related structures, see: Kalateh et al. (2008); Safari et al. (2009).
Data collection: APEX2 (Bruker, 2007); cell
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: SHELXTL (Sheldrick, 2008) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).[HgBr2(C8H8N2S2)] | Z = 4 |
Mr = 556.69 | F(000) = 1008 |
Triclinic, P1 | Dx = 2.840 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 10.2799 (6) Å | Cell parameters from 2931 reflections |
b = 11.1595 (7) Å | θ = 3.0–29.0° |
c = 11.6821 (7) Å | µ = 18.25 mm−1 |
α = 88.4456 (11)° | T = 100 K |
β = 85.3290 (11)° | Prism, colorless |
γ = 77.1162 (11)° | 0.14 × 0.12 × 0.08 mm |
V = 1302.02 (14) Å3 |
Bruker APEXII CCD diffractometer | 6912 independent reflections |
Radiation source: fine-focus sealed tube | 5865 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
φ and ω scans | θmax = 29.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −14→14 |
Tmin = 0.070, Tmax = 0.240 | k = −15→15 |
20881 measured reflections | l = −15→15 |
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)] = 0.026 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.062 | H-atom parameters constrained |
S = 0.94 | w = 1/[σ2(Fo2) + (0.0299P)2 + 2.0838P] where P = (Fo2 + 2Fc2)/3 |
6912 reflections | (Δ/σ)max = 0.002 |
275 parameters | Δρmax = 1.28 e Å−3 |
0 restraints | Δρmin = −1.68 e Å−3 |
[HgBr2(C8H8N2S2)] | γ = 77.1162 (11)° |
Mr = 556.69 | V = 1302.02 (14) Å3 |
Triclinic, P1 | Z = 4 |
a = 10.2799 (6) Å | Mo Kα radiation |
b = 11.1595 (7) Å | µ = 18.25 mm−1 |
c = 11.6821 (7) Å | T = 100 K |
α = 88.4456 (11)° | 0.14 × 0.12 × 0.08 mm |
β = 85.3290 (11)° |
Bruker APEXII CCD diffractometer | 6912 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 5865 reflections with I > 2σ(I) |
Tmin = 0.070, Tmax = 0.240 | Rint = 0.041 |
20881 measured reflections |
R[F2 > 2σ(F2)] = 0.026 | 0 restraints |
wR(F2) = 0.062 | H-atom parameters constrained |
S = 0.94 | Δρmax = 1.28 e Å−3 |
6912 reflections | Δρmin = −1.68 e Å−3 |
275 parameters |
x | y | z | Uiso*/Ueq | ||
Hg1 | 1.080846 (18) | 0.703396 (17) | 0.207265 (14) | 0.01438 (5) | |
Br1 | 1.27509 (5) | 0.73077 (5) | 0.07429 (4) | 0.01974 (10) | |
Br2 | 1.01869 (5) | 0.79183 (4) | 0.40562 (4) | 0.01472 (9) | |
S1 | 0.96732 (13) | 0.30682 (11) | 0.30191 (10) | 0.0162 (2) | |
S2 | 0.74266 (12) | 0.71656 (11) | −0.06846 (10) | 0.0167 (2) | |
N1 | 1.0123 (4) | 0.5145 (4) | 0.2400 (3) | 0.0126 (8) | |
N2 | 0.9123 (4) | 0.6940 (3) | 0.0815 (3) | 0.0118 (7) | |
C1 | 1.0489 (4) | 0.4251 (4) | 0.3135 (4) | 0.0117 (8) | |
C2 | 0.8814 (5) | 0.3826 (4) | 0.1925 (4) | 0.0160 (9) | |
H2A | 0.8189 | 0.3523 | 0.1522 | 0.019* | |
C3 | 0.9157 (5) | 0.4932 (4) | 0.1714 (4) | 0.0129 (9) | |
C4 | 0.8605 (5) | 0.7689 (4) | 0.0020 (4) | 0.0148 (9) | |
C5 | 0.7668 (5) | 0.5861 (4) | 0.0144 (4) | 0.0150 (9) | |
H5A | 0.7206 | 0.5217 | 0.0097 | 0.018* | |
C6 | 0.8618 (5) | 0.5883 (4) | 0.0881 (4) | 0.0131 (9) | |
C7 | 1.1512 (5) | 0.4226 (5) | 0.3961 (4) | 0.0186 (10) | |
H7A | 1.1390 | 0.5043 | 0.4296 | 0.028* | |
H7B | 1.2407 | 0.3995 | 0.3561 | 0.028* | |
H7C | 1.1418 | 0.3625 | 0.4571 | 0.028* | |
C8 | 0.8973 (5) | 0.8888 (4) | −0.0288 (4) | 0.0189 (10) | |
H8A | 0.9945 | 0.8786 | −0.0294 | 0.028* | |
H8B | 0.8531 | 0.9507 | 0.0280 | 0.028* | |
H8C | 0.8684 | 0.9155 | −0.1050 | 0.028* | |
Hg2 | 0.411665 (18) | 0.785100 (16) | 0.717555 (15) | 0.01467 (5) | |
Br3 | 0.50713 (5) | 0.58257 (4) | 0.80847 (4) | 0.01660 (10) | |
Br4 | 0.19137 (5) | 0.93379 (4) | 0.74712 (4) | 0.01734 (10) | |
S3 | 0.72536 (12) | 1.05628 (11) | 0.68030 (10) | 0.0150 (2) | |
S4 | 0.59092 (12) | 0.68616 (11) | 0.31954 (10) | 0.0161 (2) | |
N3 | 0.5664 (4) | 0.9109 (4) | 0.6782 (3) | 0.0142 (8) | |
N4 | 0.5044 (4) | 0.7580 (3) | 0.5213 (3) | 0.0110 (7) | |
C9 | 0.6015 (5) | 0.9912 (4) | 0.7442 (4) | 0.0136 (9) | |
C10 | 0.7285 (5) | 0.9747 (4) | 0.5581 (4) | 0.0154 (9) | |
H10A | 0.7849 | 0.9794 | 0.4904 | 0.018* | |
C11 | 0.6378 (4) | 0.9014 (4) | 0.5721 (4) | 0.0114 (8) | |
C12 | 0.4840 (4) | 0.6864 (4) | 0.4407 (4) | 0.0138 (9) | |
C13 | 0.6630 (5) | 0.7909 (4) | 0.3806 (4) | 0.0137 (9) | |
H13A | 0.7328 | 0.8249 | 0.3443 | 0.016* | |
C14 | 0.6059 (4) | 0.8182 (4) | 0.4879 (4) | 0.0100 (8) | |
C15 | 0.5358 (5) | 1.0239 (5) | 0.8604 (4) | 0.0176 (10) | |
H15A | 0.4717 | 0.9721 | 0.8807 | 0.026* | |
H15B | 0.4885 | 1.1105 | 0.8608 | 0.026* | |
H15C | 0.6036 | 1.0107 | 0.9164 | 0.026* | |
C16 | 0.3766 (5) | 0.6164 (5) | 0.4523 (4) | 0.0181 (10) | |
H16A | 0.3632 | 0.5912 | 0.5326 | 0.027* | |
H16B | 0.4023 | 0.5434 | 0.4038 | 0.027* | |
H16C | 0.2932 | 0.6685 | 0.4281 | 0.027* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Hg1 | 0.01399 (9) | 0.01808 (10) | 0.01340 (8) | −0.00844 (7) | −0.00148 (6) | 0.00061 (6) |
Br1 | 0.0193 (2) | 0.0236 (3) | 0.0190 (2) | −0.0124 (2) | 0.00513 (19) | −0.00411 (18) |
Br2 | 0.0117 (2) | 0.0184 (2) | 0.0138 (2) | −0.00327 (17) | 0.00036 (16) | −0.00020 (17) |
S1 | 0.0190 (6) | 0.0165 (6) | 0.0161 (5) | −0.0099 (5) | −0.0037 (4) | 0.0045 (4) |
S2 | 0.0160 (6) | 0.0177 (6) | 0.0179 (5) | −0.0051 (5) | −0.0079 (5) | 0.0019 (4) |
N1 | 0.0086 (18) | 0.015 (2) | 0.0150 (18) | −0.0052 (15) | −0.0010 (15) | 0.0000 (15) |
N2 | 0.0097 (18) | 0.0125 (19) | 0.0134 (18) | −0.0036 (15) | 0.0000 (14) | 0.0017 (14) |
C1 | 0.007 (2) | 0.012 (2) | 0.015 (2) | −0.0021 (16) | 0.0031 (16) | −0.0011 (16) |
C2 | 0.017 (2) | 0.020 (2) | 0.014 (2) | −0.011 (2) | −0.0026 (18) | 0.0032 (18) |
C3 | 0.013 (2) | 0.015 (2) | 0.011 (2) | −0.0035 (18) | −0.0011 (17) | 0.0001 (16) |
C4 | 0.017 (2) | 0.018 (2) | 0.011 (2) | −0.0052 (19) | −0.0008 (17) | −0.0031 (17) |
C5 | 0.014 (2) | 0.016 (2) | 0.015 (2) | −0.0045 (18) | −0.0055 (18) | 0.0006 (17) |
C6 | 0.009 (2) | 0.016 (2) | 0.015 (2) | −0.0045 (18) | 0.0010 (17) | −0.0052 (17) |
C7 | 0.018 (2) | 0.022 (3) | 0.019 (2) | −0.008 (2) | −0.0075 (19) | 0.0053 (19) |
C8 | 0.020 (3) | 0.015 (2) | 0.023 (2) | −0.005 (2) | −0.004 (2) | −0.0003 (19) |
Hg2 | 0.01185 (9) | 0.01587 (9) | 0.01664 (9) | −0.00476 (7) | 0.00171 (7) | −0.00051 (6) |
Br3 | 0.0161 (2) | 0.0170 (2) | 0.0169 (2) | −0.00399 (18) | −0.00171 (17) | 0.00080 (17) |
Br4 | 0.0137 (2) | 0.0168 (2) | 0.0201 (2) | −0.00250 (18) | 0.00373 (18) | 0.00131 (17) |
S3 | 0.0160 (6) | 0.0169 (6) | 0.0139 (5) | −0.0084 (5) | 0.0024 (4) | −0.0025 (4) |
S4 | 0.0136 (5) | 0.0197 (6) | 0.0151 (5) | −0.0042 (5) | 0.0012 (4) | −0.0057 (4) |
N3 | 0.0134 (19) | 0.015 (2) | 0.0149 (18) | −0.0048 (16) | −0.0012 (15) | −0.0004 (15) |
N4 | 0.0065 (17) | 0.0114 (18) | 0.0140 (17) | 0.0002 (14) | 0.0005 (14) | −0.0018 (14) |
C9 | 0.012 (2) | 0.015 (2) | 0.013 (2) | −0.0031 (17) | 0.0027 (17) | 0.0006 (17) |
C10 | 0.015 (2) | 0.017 (2) | 0.014 (2) | −0.0043 (18) | 0.0002 (18) | −0.0004 (17) |
C11 | 0.007 (2) | 0.015 (2) | 0.012 (2) | −0.0022 (17) | −0.0010 (16) | 0.0004 (16) |
C12 | 0.0029 (19) | 0.020 (2) | 0.017 (2) | 0.0006 (17) | 0.0003 (16) | −0.0006 (18) |
C13 | 0.011 (2) | 0.013 (2) | 0.017 (2) | −0.0019 (17) | −0.0004 (17) | −0.0004 (17) |
C14 | 0.0051 (19) | 0.009 (2) | 0.015 (2) | −0.0003 (16) | −0.0022 (16) | 0.0033 (16) |
C15 | 0.022 (3) | 0.023 (3) | 0.009 (2) | −0.009 (2) | 0.0028 (18) | −0.0022 (18) |
C16 | 0.012 (2) | 0.023 (3) | 0.021 (2) | −0.0072 (19) | −0.0017 (19) | −0.006 (2) |
Hg1—N1 | 2.379 (4) | Hg2—N3 | 2.357 (4) |
Hg1—N2 | 2.383 (4) | Hg2—N4 | 2.410 (4) |
Hg1—Br1 | 2.4970 (5) | Hg2—Br3 | 2.4999 (5) |
Hg1—Br2 | 2.5206 (5) | Hg2—Br4 | 2.4957 (5) |
S1—C2 | 1.709 (5) | S3—C10 | 1.708 (5) |
S1—C1 | 1.727 (4) | S3—C9 | 1.713 (5) |
S2—C5 | 1.708 (5) | S4—C13 | 1.715 (5) |
S2—C4 | 1.729 (5) | S4—C12 | 1.720 (5) |
N1—C1 | 1.309 (6) | N3—C9 | 1.324 (6) |
N1—C3 | 1.389 (6) | N3—C11 | 1.383 (6) |
N2—C4 | 1.298 (6) | N4—C12 | 1.310 (6) |
N2—C6 | 1.388 (6) | N4—C14 | 1.387 (5) |
C1—C7 | 1.480 (6) | C9—C15 | 1.483 (6) |
C2—C3 | 1.368 (6) | C10—C11 | 1.368 (6) |
C2—H2A | 0.9500 | C10—H10A | 0.9500 |
C3—C6 | 1.467 (7) | C11—C14 | 1.475 (6) |
C4—C8 | 1.496 (7) | C12—C16 | 1.483 (6) |
C5—C6 | 1.358 (6) | C13—C14 | 1.353 (6) |
C5—H5A | 0.9500 | C13—H13A | 0.9500 |
C7—H7A | 0.9800 | C15—H15A | 0.9800 |
C7—H7B | 0.9800 | C15—H15B | 0.9800 |
C7—H7C | 0.9800 | C15—H15C | 0.9800 |
C8—H8A | 0.9800 | C16—H16A | 0.9800 |
C8—H8B | 0.9800 | C16—H16B | 0.9800 |
C8—H8C | 0.9800 | C16—H16C | 0.9800 |
N1—Hg1—N2 | 71.23 (13) | N3—Hg2—N4 | 70.25 (13) |
N1—Hg1—Br1 | 124.79 (9) | N3—Hg2—Br4 | 104.07 (10) |
N2—Hg1—Br1 | 103.63 (9) | N4—Hg2—Br4 | 115.64 (9) |
N1—Hg1—Br2 | 98.36 (9) | N3—Hg2—Br3 | 114.30 (10) |
N2—Hg1—Br2 | 120.67 (9) | N4—Hg2—Br3 | 102.77 (9) |
Br1—Hg1—Br2 | 126.492 (16) | Br4—Hg2—Br3 | 132.848 (17) |
C2—S1—C1 | 90.8 (2) | C10—S3—C9 | 90.6 (2) |
C5—S2—C4 | 90.4 (2) | C13—S4—C12 | 90.4 (2) |
C1—N1—C3 | 112.7 (4) | C9—N3—C11 | 111.5 (4) |
C1—N1—Hg1 | 131.2 (3) | C9—N3—Hg2 | 130.2 (3) |
C3—N1—Hg1 | 116.2 (3) | C11—N3—Hg2 | 118.3 (3) |
C4—N2—C6 | 111.8 (4) | C12—N4—C14 | 112.3 (4) |
C4—N2—Hg1 | 131.6 (3) | C12—N4—Hg2 | 130.9 (3) |
C6—N2—Hg1 | 116.5 (3) | C14—N4—Hg2 | 116.6 (3) |
N1—C1—C7 | 124.3 (4) | N3—C9—C15 | 122.7 (4) |
N1—C1—S1 | 112.7 (3) | N3—C9—S3 | 113.5 (3) |
C7—C1—S1 | 123.0 (4) | C15—C9—S3 | 123.8 (4) |
C3—C2—S1 | 110.1 (3) | C11—C10—S3 | 110.1 (3) |
C3—C2—H2A | 125.0 | C11—C10—H10A | 125.0 |
S1—C2—H2A | 125.0 | S3—C10—H10A | 125.0 |
C2—C3—N1 | 113.8 (4) | C10—C11—N3 | 114.4 (4) |
C2—C3—C6 | 127.8 (4) | C10—C11—C14 | 128.1 (4) |
N1—C3—C6 | 118.4 (4) | N3—C11—C14 | 117.5 (4) |
N2—C4—C8 | 124.7 (4) | N4—C12—C16 | 123.1 (4) |
N2—C4—S2 | 113.3 (3) | N4—C12—S4 | 112.9 (3) |
C8—C4—S2 | 122.0 (4) | C16—C12—S4 | 124.0 (4) |
C6—C5—S2 | 109.8 (4) | C14—C13—S4 | 110.1 (3) |
C6—C5—H5A | 125.1 | C14—C13—H13A | 124.9 |
S2—C5—H5A | 125.1 | S4—C13—H13A | 124.9 |
C5—C6—N2 | 114.7 (4) | C13—C14—N4 | 114.2 (4) |
C5—C6—C3 | 127.7 (4) | C13—C14—C11 | 128.8 (4) |
N2—C6—C3 | 117.7 (4) | N4—C14—C11 | 117.0 (4) |
C1—C7—H7A | 109.5 | C9—C15—H15A | 109.5 |
C1—C7—H7B | 109.5 | C9—C15—H15B | 109.5 |
H7A—C7—H7B | 109.5 | H15A—C15—H15B | 109.5 |
C1—C7—H7C | 109.5 | C9—C15—H15C | 109.5 |
H7A—C7—H7C | 109.5 | H15A—C15—H15C | 109.5 |
H7B—C7—H7C | 109.5 | H15B—C15—H15C | 109.5 |
C4—C8—H8A | 109.5 | C12—C16—H16A | 109.5 |
C4—C8—H8B | 109.5 | C12—C16—H16B | 109.5 |
H8A—C8—H8B | 109.5 | H16A—C16—H16B | 109.5 |
C4—C8—H8C | 109.5 | C12—C16—H16C | 109.5 |
H8A—C8—H8C | 109.5 | H16A—C16—H16C | 109.5 |
H8B—C8—H8C | 109.5 | H16B—C16—H16C | 109.5 |
N2—Hg1—N1—C1 | −178.0 (4) | N4—Hg2—N3—C9 | 177.3 (5) |
Br1—Hg1—N1—C1 | 88.2 (4) | Br4—Hg2—N3—C9 | 64.7 (4) |
Br2—Hg1—N1—C1 | −58.3 (4) | Br3—Hg2—N3—C9 | −87.2 (4) |
N2—Hg1—N1—C3 | 1.3 (3) | N4—Hg2—N3—C11 | −4.7 (3) |
Br1—Hg1—N1—C3 | −92.5 (3) | Br4—Hg2—N3—C11 | −117.3 (3) |
Br2—Hg1—N1—C3 | 121.0 (3) | Br3—Hg2—N3—C11 | 90.8 (3) |
N1—Hg1—N2—C4 | −177.5 (4) | N3—Hg2—N4—C12 | 178.4 (4) |
Br1—Hg1—N2—C4 | −55.0 (4) | Br4—Hg2—N4—C12 | −85.0 (4) |
Br2—Hg1—N2—C4 | 93.8 (4) | Br3—Hg2—N4—C12 | 66.9 (4) |
N1—Hg1—N2—C6 | −0.9 (3) | N3—Hg2—N4—C14 | 5.4 (3) |
Br1—Hg1—N2—C6 | 121.7 (3) | Br4—Hg2—N4—C14 | 101.9 (3) |
Br2—Hg1—N2—C6 | −89.5 (3) | Br3—Hg2—N4—C14 | −106.2 (3) |
C3—N1—C1—C7 | 179.2 (4) | C11—N3—C9—C15 | 176.8 (4) |
Hg1—N1—C1—C7 | −1.5 (7) | Hg2—N3—C9—C15 | −5.0 (7) |
C3—N1—C1—S1 | 0.6 (5) | C11—N3—C9—S3 | −1.2 (5) |
Hg1—N1—C1—S1 | 179.9 (2) | Hg2—N3—C9—S3 | 177.0 (2) |
C2—S1—C1—N1 | 0.3 (4) | C10—S3—C9—N3 | 1.2 (4) |
C2—S1—C1—C7 | −178.3 (4) | C10—S3—C9—C15 | −176.8 (5) |
C1—S1—C2—C3 | −1.2 (4) | C9—S3—C10—C11 | −0.9 (4) |
S1—C2—C3—N1 | 1.7 (5) | S3—C10—C11—N3 | 0.4 (5) |
S1—C2—C3—C6 | −177.4 (4) | S3—C10—C11—C14 | 178.7 (4) |
C1—N1—C3—C2 | −1.5 (6) | C9—N3—C11—C10 | 0.5 (6) |
Hg1—N1—C3—C2 | 179.0 (3) | Hg2—N3—C11—C10 | −177.9 (3) |
C1—N1—C3—C6 | 177.7 (4) | C9—N3—C11—C14 | −178.0 (4) |
Hg1—N1—C3—C6 | −1.7 (5) | Hg2—N3—C11—C14 | 3.6 (5) |
C6—N2—C4—C8 | −178.1 (4) | C14—N4—C12—C16 | −176.9 (4) |
Hg1—N2—C4—C8 | −1.3 (7) | Hg2—N4—C12—C16 | 9.8 (7) |
C6—N2—C4—S2 | 1.5 (5) | C14—N4—C12—S4 | 1.2 (5) |
Hg1—N2—C4—S2 | 178.2 (2) | Hg2—N4—C12—S4 | −172.1 (2) |
C5—S2—C4—N2 | −0.4 (4) | C13—S4—C12—N4 | −1.5 (4) |
C5—S2—C4—C8 | 179.2 (4) | C13—S4—C12—C16 | 176.6 (4) |
C4—S2—C5—C6 | −0.8 (4) | C12—S4—C13—C14 | 1.3 (4) |
S2—C5—C6—N2 | 1.9 (5) | S4—C13—C14—N4 | −0.9 (5) |
S2—C5—C6—C3 | −177.9 (4) | S4—C13—C14—C11 | 178.8 (4) |
C4—N2—C6—C5 | −2.2 (6) | C12—N4—C14—C13 | −0.2 (6) |
Hg1—N2—C6—C5 | −179.5 (3) | Hg2—N4—C14—C13 | 174.1 (3) |
C4—N2—C6—C3 | 177.6 (4) | C12—N4—C14—C11 | −179.9 (4) |
Hg1—N2—C6—C3 | 0.3 (5) | Hg2—N4—C14—C11 | −5.6 (5) |
C2—C3—C6—C5 | −0.1 (8) | C10—C11—C14—C13 | 3.5 (8) |
N1—C3—C6—C5 | −179.3 (4) | N3—C11—C14—C13 | −178.2 (5) |
C2—C3—C6—N2 | −179.9 (4) | C10—C11—C14—N4 | −176.8 (5) |
N1—C3—C6—N2 | 1.0 (6) | N3—C11—C14—N4 | 1.5 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8B···Br4i | 0.98 | 2.92 | 3.826 (5) | 155 |
C10—H10A···Br4i | 0.95 | 2.92 | 3.760 (5) | 148 |
C16—H16B···Br3ii | 0.98 | 2.87 | 3.772 (5) | 154 |
C16—H16C···Br2iii | 0.98 | 2.88 | 3.837 (5) | 165 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, −y+1, −z+1; (iii) x−1, y, z. |
Experimental details
Crystal data | |
Chemical formula | [HgBr2(C8H8N2S2)] |
Mr | 556.69 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 10.2799 (6), 11.1595 (7), 11.6821 (7) |
α, β, γ (°) | 88.4456 (11), 85.3290 (11), 77.1162 (11) |
V (Å3) | 1302.02 (14) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 18.25 |
Crystal size (mm) | 0.14 × 0.12 × 0.08 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.070, 0.240 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 20881, 6912, 5865 |
Rint | 0.041 |
(sin θ/λ)max (Å−1) | 0.682 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.026, 0.062, 0.94 |
No. of reflections | 6912 |
No. of parameters | 275 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.28, −1.68 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and Mercury (Macrae et al., 2006), SHELXTL (Sheldrick, 2008).
Hg1—N1 | 2.379 (4) | Hg2—N3 | 2.357 (4) |
Hg1—N2 | 2.383 (4) | Hg2—N4 | 2.410 (4) |
Hg1—Br1 | 2.4970 (5) | Hg2—Br3 | 2.4999 (5) |
Hg1—Br2 | 2.5206 (5) | Hg2—Br4 | 2.4957 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8B···Br4i | 0.98 | 2.92 | 3.826 (5) | 155 |
C10—H10A···Br4i | 0.95 | 2.92 | 3.760 (5) | 148 |
C16—H16B···Br3ii | 0.98 | 2.87 | 3.772 (5) | 154 |
C16—H16C···Br2iii | 0.98 | 2.88 | 3.837 (5) | 165 |
Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) −x+1, −y+1, −z+1; (iii) x−1, y, z. |
Acknowledgements
The author is grateful to the Islamic Azad University, North Tehran Branch, for financial support.
References
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Recently, we reported the synthesis and crystal structure of [HgI2(dm4bt)] (dm4bt is 2,2'-dimethyl-4,4'-bithiazole) (Abedi & Yahyazade Bali, 2010). Dm4bt is a good bidentate ligand, and numerous complexes with dm4bt have been prepared, such as that of zinc (Khavasi et al., 2008), thallium (Notash et al., 2008), cadmium (Notash et al., 2009) and copper (Al-Hashemi et al., 2009, 2010). For further investigation of dm4bt, we synthesis the title complex and report herein its crystal structure.
The asymmetric unit of the title compound (Fig. 1) contains two crystallographically independent molecules. The HgII atom is four-coordinated in a distorted tetrahedral configuration by two N atoms from a dm4bt ligand and two Br atoms. The Hg—N and Hg—Br bond lengths (Table 1) and angles are within normal range found in [Hg(SCN)2(dm4bt)] (Safari et al., 2009) and {HgBr2[NH(py)2]} [NH(py)2 is di-2-pyridylamine] (Kalateh et al., 2008).
In the crystal structure, intermolecular C—H···Br hydrogen bonds (Table 2) and π–π contacts (Fig. 2) between the thiazole rings, Cg1···Cg2i and Cg3···Cg4ii [symmetry codes: (i) 2-x, 1-y, -z; (ii) 1-x, 2-y, 1-z. Cg1, Cg2, Cg3 and Cg4 are the centroids of the rings S1/C1/N1/C3/C2, S2/C4/N2/C6/C5, S3/C9/N3/C11/C10 and S4/C12/N4/C14/C13, respectively] stabilize the structure, with centroid–centroid distances of 3.670 (3) and 3.614 (2) Å.