Control of aminophosphine chelate ring-opening in Pt(ii) and Pd(ii) complexes: potential dual-mode anticancer agents
作者:Abraha Habtemariam、Beth Watchman、Brian S. Potter、Rex Palmer、Simon Parsons、Andrew Parkin、Peter J. Sadler
DOI:10.1039/b009117k
日期:——
degrees of distortion and variable M–N bond lengths dependent not only on the trans influence of P but also on steric effects within the complex. pH-induced chelate ring-opening of cis-[Pt(Me2N(CH2)2PPh2-P,N)2]Cl2 had an associated pK value of 6.9. In contrast, complexes with R1 and R2 = H, n = 2 or 3 or R1 = H and R2 = Me, n = 2, are more difficult to ring-open. Thus the complexes cis-[Pt(Me(H)N(CH2)2PPh2-P
我们证明了[M(R 1 R 2 N(CH 2)n PPh 2)2 ] 2+类型的双(氨基膦)配合物,可存在于螯合环-中,M = Pt(II)或Pd(II)。固态和水溶液形式的闭环和开环形式。在溶液中它们之间的平衡可以通过该基团的性质来控制- [R 1和R 2(H,Me中,BZ,环己基),由桥长度Ñ,并通过将pH和Cl -浓度。报道了闭环配合物顺式-[Pt(H 2)的X射线晶体结构。N(CH 2)2 PPH 2 - P,Ñ)2 ]氯2,顺式- [铂(H 2 N(CH 2)3 PPH 2 - P,Ñ)2 ]氯2,和顺- [铂(ME (H)N(CH 2)2 PPh 2 - P,N)2 ] [HCl 2 ] 2,单环开环的顺式-[Pd(Me 2 N(CH)2) 2 PPh 2 - N, P)Cl(Me 2 NH(CH 2) 2 PPh 2 - P)](NO 3) 2,二环开环的顺式-[Pt(Me 2