Cis-Dichlorido(1,3-dimesitylimidazolidin-2-yl-idene)(2-formyl-benzyl-idene-?C,O)ruthenium diethyl ether solvate.

ABSTRACT: The title compound, [RuCl(2)(C(8)H(6)O)(C(21)H(26)N(2))]·C(4)H(10)O, contains a catalytically active ruthenium carbene complex of the 'second-generation Grubbs/Hoveyda' type with Ru in a square-pyramidal coordination, the apex of which is formed by the benzyl-idene carbene atom with Ru=C 1.827?(2)?Å. The complex shows the uncommon cis, rather than the usual trans, arrangement of the two chloride ligands, with Ru-Cl bond lengths of 2.3548?(6) and 2.3600?(6)?Å, and a Cl-Ru-Cl angle of 89.76?(2)°. This cis configuration is desirable for certain applications of ring-opening metathesis polymerization (ROMP) of strained cyclic olefins. The crystalline solid is a diethyl ether solvate, which is built up from a porous framework of Ru complexes held together by ?-? stacking and C-H?Cl and C-H?O inter-actions. The disordered diethyl ether solvent mol-ecules are contained in two independent infinite channels, which extend parallel to the c axis at x,y = 0,0 and x,y = , and have solvent-accessible void volumes of 695 and 464?Å(3) per unit cell.

SUBMITTER: Slugovc C 

PROVIDER: S-EPMC2979747 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature