former converting to the latter at 100 °C. Reactions of trans-5c and LiBr or NaI afford the halide complexes trans-Pt(X)(Me)(P((CH2)14)3P) (trans-9c, 88%; trans-10c, 87%). Thermolyses and DFT calculations that include acyclic model compounds establish trans > cis stabilities for all except the dialkyl complexes, for which energies can be closely spaced. The σ donor strengths of the non-phosphine ligands
像二
氯化陀螺仪配合物的反式-
铂(CL)2(P((CH 2)Ñ)3 P )(反式- 2 ; Ñ = Ç,14; ê,18;克,22)(2当量)和的MeLi反应产生降落伞状二甲基配合物cis - Pt(Me) 2 (P((CH 2 ) n ) 3 P ) ( cis - 4c,e,g , 70–91%)。的HCl(1当量)和顺式- 4c中反应,得到顺式-
铂(CL)(ME)(P((CH 2)14)3 P )(顺式- 5C,83%),将其用
硅胶或结晶,得到搅拌的反式- 5c中(89%)。HCl和的类似的反应顺- 4E,克给予顺/反式- 5e中,克的混合物使得在与
硅胶产量搅拌反式- 5e中,克。具有反式- 2c /EtLi 的平行序列给出顺式- Pt(Et) 2 (P((CH 2)14)3 P )(顺式-图6c,85%),但用HCl随后的反应,得到的反式-
铂(CL)(ET)(P((CH 2)14)3