title: A paramagnetic precursor for polymeric supramolecular assemblies based on multiply bonded dimetal units: mu-acetato-acetonitriletris(mu-N,N'-diphenylformamidinato)diruthenium tetrafluoroborate dichloromethane hemisolvate.
abstract: The title compound, [Ru2(C13H11N2)3(C2H3O2)(C2H3N)]BF4.0.5CH2Cl2 or [Ru2(mu-DPhF)3(mu-O2CMe)(MeCN)]BF4.0.5CH2Cl2, where DPhF is N,N'-diphenylformamidinate, crystallized as dark-blue block-shaped crystals. In the unit cell, the diruthenium cation lies on a general position, and the BF4- anions reside on two independent special positions with crystallographic twofold symmetry. Disorder was observed for one of the phenyl groups in the formamidinate ligand, the axial acetonitrile molecule and the interstitial dichloromethane molecule. The compound, which exhibits a long Ru-Ru bond of 2.4131 (5) A, is the first {Ru2}5+ formamidinate species that is both equatorially and axially functionalized so that it can be used as a precursor for polymeric paramagnetic supramolecular assemblies.
authors.affiliation: Department of Chemistry and Laboratory for Molecular Structure and Bonding, PO Box 30012, Texas A&M University, College Station, TX 77842-3012, USA.
authors.forename: Panagiotis
authors.initials: P
authors.lastname: Angaridis
authors.forename: F Albert
authors.initials: FA
authors.lastname: Cotton
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Murillo
authors.forename: Xiao Ping
authors.initials: XP
authors.lastname: Wang