69 research outputs found
A structural and theoretical study of the thiophosphinite and dithiophosphinate anions
Two novel lithium compounds containing either the phosphorus-chalcogenide anions [Ph2PS] or [Cy2PS2] were isolated as decomposition products in the attempted formation of phospha(V)guanidinate anions. Lithium diphenylthiophosphinite was structurally characterized as the dimeric TMEDA adduct [Li(Ph2PS)(TMEDA)]2 (1), in which a rare example of the 1-S bonding mode was observed for the anion. The dicyclohexyldithiophosphinate anion was incorporated into an aggregated structure with molecular formula [Li5(Cy2PS2)4(OH)]2 (2). DFT calculations were performed on the isolated [R2PS]- and [R2PS2]- anions (R = Ph, Cy), indicating delocalization of electron density into the P-S bonds for each model, in agreement with bond-lengths taken from crystallographic dat
Group 13 Element Derivatives of Pentavalent Phosphorus Thioacids. Synthesis, Structure and Properties
Mechanically Induced Solid-State Generation of Phosphorus Ylides and the Solvent-Free Wittig Reaction
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