The First Example of a Structurally Characterized Monomeric Bismuth Selenolate

Abstract

The reaction of intramolecularly coordinating 2-(4,4-dimethyloxazolino)phenyl selenolate ligand with anhydrous BiCl 3 (3:1 equivalents) produces the monomeric, air stable, homoleptic bismuth(III) selenolate complex.

Synthesis and Structural Characterization of Monomeric Zinc(II), Cadmium(II), and Mercury(II) Arenethiolates with a Chelating Oxazoline Ligand

“…At Ϫ60°C, the methyl protons give rise to two singlets, however, the signal for the methylene protons is observed as a broad singlet ( Figure 2). This is in contrast to the spectra of the corresponding cadmium selenolate [6] and cadmium tellurolate [7] where an AB doublet of doublets for the methylene protons was observed at Ϫ60°C. This indicates that the complex is proScheme 1.…”

“…From the current results and their comparison with those of corresponding selenolates [6] and tellurolates, [7] it is obThey are, however, almost insoluble in highly polar solvents like DMSO and methanol. served that the chemical shift values in all the complexes lie almost in the same region and there is no drastic change in Complex 4, obtained as a yellow solid, shows some interesting features. The complex affords two types of crystals; the chemical shift values by changing the metal atom or changing the chalcogen atom.…”

“…In contrast to the synthesis of corresponding diselenide [4f] tions are weak in the solution. The room-temperature 1 H-NMR spectrum of 4 contains a well-resolved AB doublet and ditelluride, [7] the synthesis of disulfide by aerial oxidation of the lithium arenethiolate 2 was found to be diffi-of doublets for the methylene protons and two sharp singlets for the methyl protons (Figure 1). The AB pattern for cult due to higher stability of the arenethiol produced by the addition of the lithium arenethiolate to water, and, the methylene protons implies that the strong coordination of the "hard" imine nitrogen atom with the "hard" zinc(II) therefore, vigorous oxidation was required to convert the thiol to disulfide.…”

“…Two signals at δ ϭ 26.99 and 28.28 observed for the methyl group carbon atoms clearly indicate that the tem. The structure is different from that of the corresponding diselenide [4f] and ditelluride [7] which are not chiral. Retwo methyl groups present in the complex are nonequivalent.…”

“…[7] In order to investigate the Synthesis of the thiolate complexes was approached by effect of the chalcogen atom on the chirality in Group 12 the metathesis reaction of the lithium arenethiolate with the corresponding MCl 2 in ether according to our recently re-olate by the reaction of 2 with HgCl 2 were unsuccessful.…”