Abstract
Six-coordinate titanium(IV) N,N-dialkylmonothiocarbamate complexes Ti(R2mtc)2Cl2 (R = Me, Et, i-Pr, or i-Bu) have been prepared in excellent yield by reaction of titanium(IV) chloride with stoichiometric amounts of sodium N,N-dialkylmonothiocarbamates in dichloromethane or benzene. The complexes were characterized by conductance measurements and by infrared and 1H NMR spectroscopy. The x-ray crystal structure of Ti(Me2mtc)2Cl2 was determined in order to establish the location of the sulfur atoms, which are generally cis in monothiocarbamate and monothio-β-diketonate complexes. Ti(Me2mtc)2Cl2 has a distorted octahedral structure in which the Ti(IV) atom is bonded to two cis Cl atoms and two planar, bidentate monothiocarbamate ligands. The complex exists (unexpectedly) as the C2 stereoisomer that has S atoms in trans positions.
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