147106-49-8Relevant articles and documents
DESIGNING HOMOGENEOUS CATALYSTS. Ru(II) COMPLEXES WITH POLYDENTATE MIXED-P,N-DONOR LIGANDS
Bianchini, Claudio,Innocenti, Paolo,Masi, Dante,Peruzzini, Maurizio,Zanobini, Fabrizio
, p. 461 - 470 (2007/10/02)
The potentially tri- and tetradentate aminophosphine ligands PNP and N2P2 react with or to give trans,mer complexes of the general formula (L = PNP, N2P2; Y = PPh3, DMSO) in which both PNP and N2P2 act as terdentate ligands.Displacement of coordinated PPh3 or DMSO from the PNP dichloride complexes occurs by reaction in tetrahydrofuran (THF) with NaBPh4.As a result, the binuclear face-sharing bioctahedral complex BPh4 is obtained.The PNP derivative reacts with NaBH4 yielding the trans,mer hydride(tetrahydroborate) complex 1-BH4)(PNP)(PPh3)>.The latter complex shows dynamic behaviour in solution which involves cleavage of the Ru-Hb-B bridge and interconversion of Ht by rotation.The dichlorides (L = PNP, N2P2) react with LiHBEt3 yielding * EtOH complexes.The crystal structure of the PNP derivative has been determined by X-ray methods.The compound crystallizes in the orthorhombic P212121 space group with Z = 4 and the following lattice constants: a = 12.629(2), b = 15.898(3), c = 22.629(2) Angstroem.The ruthenium atom is pseudo-octahedrally coordinated by the phosphorus and nitrogen atoms of PNP, by a PPh3 group trans to N , and by mutually trans Cl and H atoms .In the structure, the n-propyl chain and the chloride ligand are syn disposed.Addition of NaBPh4 to THF solutions of the trans hydride-chloride complexes affords the corresponding 16-electron derivatives BPh4 (L = PNP, N2P2).Depending on the reaction conditions, treatment of the PNP complex BPh4 with CO yields either the carbonyl complexes BPh4 or the dicarbonyl BPh4.
