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cis,fac-Dichlorido{N-[3,5-di-tert-butyl-2-(trimethyl-silyl-oxy)benz-yl]-N,N-bis-(2-pyridylmeth-yl)amine}(dimethyl sulfoxide)ruthenium(II) dichloro-methane disolvate.


Reaction of dichloridotetra-kis(dimethyl sulfoxide)ruthenium(II) and N-[3,5-di-tert-butyl-2-(trimethyl-silyl-oxy)benz-yl]-N,N-bis-(2-pyridylmeth-yl)amine (BPPA-TMS) affords the thermodynamic product cis,fac-[RuCl(2)(BPPA-TMS)(DMSO)] and kinetic product trans,mer-[RuCl(2)(BPPA-TMS)(DMSO)]. The title complex, [RuCl(2)(C(30)H(43)N(3)OSi)(C(2)H(6)OS)]·2CH(2)Cl(2), crystallizes as a dichloro-methane disolvate, with two formula units in the asymmetric unit. The complex exhibits a distorted-octa-hedral geometry about the low spin d(6) Ru(II) center. The BPPA-TMS ligand is coordinated in a facial fashion, with the DMSO ligand cis to the aliphatic nitro-gen atom of the BPPA-TMS ligand. One of the two dichloromethane solvate molecules is disordered over two positions in a 0.695:0.305 ratio.

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