Facile method for the synthesis of ruthenacarboranes, diamagnetic 3,3-[Ph2P(CH2)nPPh2]-3-H-3-Cl-closo-3,1,2-RuC2B9H11 (n = 3 or 4) and paramagnetic 3,3-[Ph2P(CH2)nPPh2]-3-Cl-closo-3,1,2-RuC2B9H11 (n = 2 or 3), as efficient initiators of controlled radical polymerization of vinyl monomers

Authors :: Cheredilin, D.
Dolgushin, F.
Grishin, I.
Kolyakina, E.
Nikiforov, A.
Solodovnikov, S.
Il’in, M.
Davankov, V.
Chizhevsky, I.
Grishin, D.
Source :: Russian Chemical Bulletin; July 2006, Vol. 55 Issue: 7 p1163-1170, 8p
Publication Year :: 2006
Abstract: Abstract: A facile preparative procedure was developed for the synthesis of 17-and 18-electron closo-(diphosphine)ruthenacarborane complexes. This method is based on the replacement of PPh<subscript>3</subscript> ligands with bis(diphenylphosphino)alkanes Ph<subscript>2</subscript>P(CH<subscript>2</subscript>)<subscript>n</subscript>PPh<subscript>2</subscript> (n = 2—4) in ruthenacarborane 3,3-(PPh<subscript>3</subscript>)<subscript>2</subscript>-3-Cl-3-H-closo-3,1,2-RuC<subscript>2</subscript>B<subscript>9</subscript>H<subscript>11</subscript>. The resulting complexes exhibit high activity in controlled radical polymerization of vinyl monomers.

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