Jongseong Lee, Meggan Brewer, M. Berardini
Jun 1, 1995
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0
Influential Citations
26
Citations
Journal
Inorganic Chemistry
Abstract
Lanthanide-mercury amalgams react with diphenyl diselenide to form tris(bezeneselenolates) that can be isolated as the crystalline pyridine coordination complexes (pyridine){sub 3}Ln(SePh){sub 3}(Ln=Ho (1), Tm(2), Yb(3)). The structure of 2 was established by low temperature single crystal X-ray diffraction. The complex is dimeric in the solid state, with 7-coordinate metal centers connected by a pair of {mu}2-(benzeneselenolate) ligands. Thermal decomposition of the selenolates gives a variety of solid state metal selenides: 1 gives HoSe, HoSe{sub 2}, and Ph{sub 2}Se; 2 gives Tm{sub 2}Se{sub 3} and Ph{sub 2}Se; 3 gives Yb{sub 2}Se{sub 3} and Ph{sub 2}Se. Trivalent thiolates can also be prepared by this amalgam reaction. For comparison, the structure of Yb(SPh){sub 3}(pyridine){sub 3}(4) was also determined-4 is a monomeric meroctahedral compound with inequivalent Yb-S bonds. Both 3 and 4 have an intense visible chalogen-to-ytterbium charge transfer absorption band. Crystal data (Mo K{alpha}, 153(2) K) are as follows. 2: Triclinic space group P1, a = 10.435(2) {Angstrom}, b = 12.748(2) {Angstrom}, c = 14.453(2) {Angstrom}, {alpha} = 69.85(2){degrees}, {beta} = 80.71(2){degrees}, and {gamma} = 69.03(2){degrees}. 4: Triclinic space group P1, a = 9.836(10) {Angstrom}, b = 11.304(14) {Angstrom}, c = 16.202(11) {Angstrom}, {alpha} = 80.70{degrees}, {beta} = 77.91(7){degrees}, and {gamma} = 68.34(9){degrees}.