Acta Cryst. (2003). E59, m268-m270  [ doi:10.1107/S1600536803008262 ]

Cp₂Ti(dddse): a well known precursor for Se-containing donors

S. Vincendeau, V. Collière and C. Faulmann

Abstract: Bis(⁵-cyclopentadienyl)[5,6-dihydro-1,4-dithiine-2,3-diselenolato(2-)-²Se,Se']titanium(IV), [Ti(C₅H₅)₂(C₄H₄S₂Se₂)], is isostructural with the all-sulfur derivative Cp₂Ti(dddt) [Guyon et al. (1994). Bull. Soc. Chim. Fr. 131, 217-226] (dddt^2- = 5,6-dihydro-1,4-dithiine-2,3-dithiolate). There are two molecules in the asymmetric unit, and one ethylene group of the dddse^2- ligand is found to be disordered in one of them. As in Cp₂Ti(dddt), the TiSe₂C₂ ring is folded along the SeSe axis by 49.75  (3) and 53.29  (3)° in the two independent molecules.

Online 23 April 2003

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