Abstract
The synthesis and characterization of three new complexes, BiCl3(mipit)2, BiCl3(emit)2 and BiCl3(mnpit)2 are reported where emit = 1-ethyl-3-methyl-2(3H)-imidazolethione; mnpit = 1-methyl-3-(1-propyl)-2(3H)-imidazolethione; mipit = 1-methyl-3-(2-propyl)-2(3H)-imidazolethione. X-ray crystallographic results are reported for the mnpit and mipit complexes whereas the structure of the emit complex is under reinvestigation because of disorder. BiCl3(mnpit)2 crystallizes in a triclinic space group (P1) with lattice parameters: a = 9.4223(6) Å, b = 10.6275(6) Å, c = 12.8860(8) Å, α = 108.329(1)°, β = 90.388(1)°, γ = 115.200(1)°, V = 1093(1) Å3, Z = 2. BiCl3(mipit)2 crystallizes in a triclinic space group (P1) with lattice parameters: a = 10.4347(8) Å, b = 11.0018(9) Å, c = 11.2075(9) Å, α = 95.827(1)°, β = 104.890(1)°, γ = 117.064(1)°, V = 1071(1) Å3, Z = 2. Both complexes show the same pattern with two BiL2Cl4 (L = ligand) octahedra sharing a common edge through bridging chlorine atoms and the ligands occupying trans positions perpendicular to the plane made by the two bismuth atoms and six chlorine atoms. No strong evidence for a hemidirected lone pair is observed in either of the two complexes.
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