165398-04-9Relevant articles and documents
Ligand behaviour of P-functional organotin halides: Nickel(II), palladium(II), and platinum(II) complexes with me2(Cl)SnCH2CH2PPh2
Baumeister,Hartung,Krug,Merzweiler,Schulz,Wagner,Weichmann
, p. 2185 - 2195 (2008/10/08)
Me2(Cl)SnCH2CH2PPh2 (1) reacts with NiII, PdII, and PtII halides in molar ratio 2:1 forming the complexes [MX2{PPh2CH2CH2Sn(Cl)Me 2}2] (M = Ni, Pd, Pt; X = Cl, Br) (3-6, 9, 10) (7, 8: M = Ni; Br instead of Cl). The nickel complexes were isolated and characterized both as the planar (3, 5, 7) and the tetrahedral (4, 6, 8) isomer. Crystal structure analyses and NMR data indicate for the planar nikkel complexes 3, 5, 7 and [MCl2{PPh2CH2CH2Sn(Cl)Me 2}2] (9: M = Pd; 10: M = Pt) the existence of intra and intermolecular M-Hal...Sn bridges. In a ligand: metal molar ratio of 3:1 the complexes [M⊕Cl{PPh2CH2CH2Sn Cl2Me2}-(PPh2CH 2CH2Sn(Cl)Me2}2] (11: M = Pd; 12: M = Pt) are formed which represent intramolecular ion pairs. By dehalogenation of [PdCl2{PPh2CH2CH2Sn(Cl)Me 2}2] (9) with sodium amalgam and graphite potassium (C8K), respectively, the palladacycles cis-[Pd{PPh2CH2CH2SnMe2} 2] (13) and trans[Pd(Cl)PPh2CH2CH2SnMe2{PPh 2CH2CH2Sn(Cl)Me2}] (14) are formed. From the compounds 1, 3, 9, 11, and 12 the crystal structures are determined. All compounds are characterized by 1H, 31P, and 119Sn NMR spectroscopy.
