128950-40-3Relevant academic research and scientific papers
Mercury(II) and methylmercury(II) complexes of novel sterically hindered thiolates: 13C and 199Hg NMR studies and the crystal and molecular structures of [MeHg(SC6H2-2,4,6-Pri3)], [Hg(SC6H4-2-SiMe3)2], [Hg(2-SC5H3N-3-SiMe ...
Block, Eric,Brito, Maria,Gernon, Michael,McGowty, Deborah,Kang, Hyunkyu,Zubieta, Jon
, p. 3172 - 3181 (2008/10/08)
Full title: Mercury(II) and methylmercury(II) complexes of novel sterically hindered thiolates: 13C and 199Hg NMR studies and the crystal and molecular structures of [MeHg(SC6H2-2,4,6-Pri3)], [Hg(SC6H4-2-SiMe3)2], [Hg(2-SC5H3N-3-SiMe3)2], and [Hg{(2-SC6H4)2SiMe2}]2. Several series of complexes of the types [MeHg(SR)] and [Hg(SR)2] have been synthesized, where the ligands are members of new classes of sterically hindered thiolates, including (triorganosilyl)methanethiols, 2-(triorganosilyl)benzenethiols, 3-(triorganosilyl)pyridine-2-thiols, and bis(2-mercaptophenyl) derivatives. Detailed 1H, 13C, and 199Hg NMR studies revealed several general trends. The 199Hg chemical shifts moved upfield in the order [MeHg(SR)] 2] 2] 2]. For the [MeHg(SR)] series of complexes, 1J(Hg-C) correlates with δ(13C(methyl)) and with the type of thiolate ligand. Anomalous behavior is observed for oligomeric species. There is only a limited correlation of δ(199Hg) with steric cone angles for a subset of the complexes. Crystal data are as follows. [CH3Hg(SC6H2-2,4,6-Pri 3)]: triclinic P1, a = 5.962 (1) A?, b = 9.649 (1) A?, c = 15.951 (2) A?, α = 79.60 (1)°, β = 79.58 (1)°, γ = 84.68 (1)°, V = 886.1 (10) A?3, Z = 2, Dcalc = 1.69 g cm-3. Structure solution and refinement based on 2115 reflections (Mo Kα; λ = 0.71073 A?) converged at R = 0.0497. [Hg(SC6H4-2-SiMe3)2]: monoclinic A2/a, a = 6.900 (1) A?, b = 12.856 (2) A?, c = 25.974 (5) A?, β = 104.20 (1)°, V = 2234.1 (11) A?3, Z = 4, Dcalc = 1.67 g cm-3, 1277 reflections, R = 0.0313. [Hg(2-SC5H3N-3-SiMe3)2]: triclinic P1, a = 9.058 (2) A?, b = 9.982 (2) A?, c = 12.639 (3) A?, α = 82.15 (1)°, β = 71.65 (2)°, γ = 79.98 (2)°, V = 1064.3 (10) A?3, Z = 2, Dcalc = 1.77 g cm-3, 3233 reflections, R = 0.0850. [Hg{(2-SC6H4)2SiMe2}]2: triclinic P1, a = 8.680 (2) A?, b = 12.705 (3) A?, c = 15.053 (4) A?, α = 73.94 (2)°, β = 77.56 (2)°, γ = 70.85 (2)°, Z = 2, Dcalc = 2.12 g cm-3, 1350 reflections, R = 0.0854.
