trifluoroacetic acid gave tungsten complexes of thiobenzaldehydes mer -[W(CO) 3 (R 2 PC 2 H 4 PR 2 )(η 2 -SCHR ′ )] (R=Me, 3a – 3f ; R=Ph, 4a – 4e ) in high yields. Analogous complexes of aliphatic thioaldehydes mer -[W(CO) 3 (Me 2 PC 2 H 4 PMe 2 )(η 2 -SCHR ′ )] ( 3g – 3l ) could only be obtained from the highly electron-rich thiolate complex 1 . The structure of 3i (R ′ = i -Bu) was determined by
在存在下,P
PN [W(CO)3(R 2 PC 2 H 4 PR 2)(SH)](P
PN = Ph 3
PNPPh 3; R = Me,1; R = Ph,2)与芳族醛的反应
三氟乙酸得到
硫代
苯甲醛钨配合物mer-[W(CO)3(R 2 PC 2 H 4 PR 2)(η2-SCHR')]](R = Me,3a – 3f; R = Ph,4a – 4e)高产。脂族
硫醛单体mer-[W(CO)3(Me 2 PC 2 H 4 PMe 2)(η2-SCHR')](3g – 3l)的类似络合物只能从高度富电子的
硫醇盐络合物中获得1。通过X射线晶体学测定3i(R′= i-Bu)的结构。在溶液中,配合物3和4与其少量的异构体fac-[W(CO)3(R 2 PC 2 H 4 PR 2)(η2-SCHR')]处于平衡状态。配合物3与
二甲基硫酸盐反应,然后与NH 4 PF 6盐复分解,得到烷基化产物mer-[W(CO)3(Me