Phosphonato-phosphines

Scheme 6.11) [30,31]- The catalyst was prepared from [PdCU] and the phosphonato-phosphine Ph2P-C6H4-PO(ONa)2 in water/ethyleneglycol and a mixture of NaOAc and Na2C03 served as base. Similar results were obtained with the Pd/TPPTS catalyst in a biphasic reaction mixture. 

The phosphine-functionalized tpy ligand 4 -Ph2Ptpy has both hard and soft donor sites the ligand is prone to oxidation to 4 -Ph2P(0)tpy and this affects the method of preparation of [Ru(4 -Ph2Ptpy)2]. " The complex [RuL(4,4 -Me2bpy)(NCS)] where L = 4-phosphonato-2,2 6, 2"-terpyridine, shows two ground-state pKi values at 6.0 and <4.0. The emission spectrum of the complex and the excited-state lifetimes are pFI-dependent. ... 

Dimethyl H-phosphonate oxidatively adds to Ir (I) and Rh (I) compounds with the formation of hydrido-fr(ni) and hydrido-Rh(lII) phosphonato complexes [439]. Treatment of chloro-bis(cyclooctadiene) iridium (I) [IrCl(C8Hj4)2]2 with two equivalents of triphenyl phosphine and subsequent reaction with dimethyl H-phosphonate affords two products of oxidative addition I and II, which have not been spectroscopically distinguished ... 

Examples of phosphines bearing anionic phosphonato groups include the derivatives of triphenylphosphine p-TPPMP, two isomers of TPPDP, and the derivatives of phosphanorbomadiene 6 and 7 (Scheme 14). ... 

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