Abstract
The title compound was prepared by reacting mercury(II) cyanide and tetramethylthiourea (Tmtu) in the molar ratio of 1:1.75. It was characterized by IR and NMR (1H and 13C) spectroscopy, and X-ray crystallography. The appearance of a band around 2,200 cm−1 in IR and a resonance around 145 ppm in 13C NMR indicated the binding of cyanide to mercury(II). The crystal structure of the title complex, [{(tetramethylthiourea)2Hg(CN)2}2·Hg(CN)2] (1) consists of two independent [(Tmtu)2Hg(CN)2] moieties bridged by a Hg(CN)2 unit. The mercury atom in [(Tmtu)2Hg(CN)2] unit is coordinated to two thione sulfur atoms of Tmtu and to two cyanide carbon atoms in a distorted tetrahedral mode.
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Sum Formula for 2; C12H28HgN6O2S2; Mr = 535.12; Monoclinic; Space group; P21, a = 10.1610(15), b = 7.9755(8), c = 15.122(2) Å; β = 92.480(13)˚; R int = 0.1393; R 1 = 0.0825 (for 2021 observed reflection [I > 2σ(I)]). Overall poor quality of crystal does not allow publishing this structure
Sum Formula for 3; C28H56Hg4N16O4S4; Mr = 1571.46; Monoclinic; Space group; P21/c, a = 11.4369(18), b = 8.0571(9), c = 10.5338(18) Å; β = 109.088(11)˚; R int = 0.2600; R 1 = 0.1493 (for 2845 observed reflection [I > 2σ(I)]). Overall poor quality of crystal does not allow publishing this structure
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Financial support from Pakistan Council for Science and Technology Islamabad, Pakistan, and from King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, Dhahran, Saudi Arabia is gratefully acknowledged.
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Altaf, M., Stoeckli-Evans, H., Ahmad, S. et al. Crystal Structure of a Trinuclear Mercury(II) Cyanide Complex of Tetramethylthiourea, [{(Tetramethylthiourea)2Hg(CN)2}2·Hg(CN)2]. J Chem Crystallogr 40, 1175–1179 (2010). https://doi.org/10.1007/s10870-010-9818-3
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DOI: https://doi.org/10.1007/s10870-010-9818-3