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    Dichloride [1-(2,4,6-trimethylbenzyl)-3-(biphenyl-2-ylmethyl)-imidazolidin-2-ylidine (?6-hexamethylbenzene)]ruthenium
    (Tubitak Scientific & Technological Research Council Turkey, 2006) Arslan, Hakan; Van Derveer, Donald; Ozdemir, Ismail; Yasar, Sedat; Cetinkaya, Bekir
    The single crystal X-ray structure of the imidazolidin ruthenium complex, C38H46N2Cl2Ru, was determined. The complex is an orthorhombic space group Pbca with a = 17.3586(32) angstrom, b = 14.4447(27) angstrom, c = 27.4325(52) angstrom, and V = 6878.466(4) angstrom(3) with Z = 8 for D-calc = 1.357 g/cm(3). It exhibits the expected 3-legged piano stool geometry. There is one coordination bond of the ruthenium atom with the electrons of the eta(6)-hexamethylbenzene, 2 symmetrical Ru-Cl bonds, and one Ru-C bond involving the imidazole ring. The coordination around the ruthenium atom is 4-fold, which in this is case is pseudo-tetrahedral.