Oxidative Addition Reactions of Low-Valent Gallium Compounds with Primary Phosphanes

被引：7
|
作者：
Schneider, Selina [1 ]
von Haenisch, Carsten [1 ]
机构：
[1] Philipps Univ Marburg, Fachbereich Chem & Wissensch Liches, Zentrum Mat Wissensch WZMW, Hans Meerwein Str, D-35043 Marburg, Germany
来源：
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2021年 / 2021卷 / 45期
关键词：
Gallium; Phosphorus; Solvent effects; Structure elucidation; PHOSPHORUS; CHEMISTRY; HYDRIDES; ROUTE;
D O I：
10.1002/ejic.202100723
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Oxidative addition reactions of (Dipp(2)NacNac)Ga with the primary silylphosphanes R2R'Si-PH2 in toluene led to the phospha-gallanes (Dipp(2)NacNac)GaH(PHSiR2R'); R=R'=Me (1), R=Me, R'=Thex (2), R=R'=iPr (3) and R=Ph, R'=tBu (4). The same reaction starting from the diphosphane iPr(2)Si(PH2)(2) yields the digallane {(Dipp(2)NacNac)GaH(PH)}(2)(SiiPr(2)) (5 a). In contrast, reaction with the hypersilylphosphane resulted in the elimination of (Me3Si)(3)SiH and formation of the diphospha-gallane (Dipp(2)NacNac)Ga(PH2)(PHSi(SiMe3)(3)) (6). The primary organo-phosphane tBuPH(2) shows a similar reaction behavior in toluene though both the di- and monophospha-gallanes (Dipp(2)NacNac)GaX(PHtBu) (7 a: X=PH2, 7 b: X=H) occur. In a row of used solvents, only pyridine led selective to the formation of 7 b thus we tested the influence of this solvent on the reaction of iPr(2)Si(PH2)(2) with only one equivalent (Dipp(2)NacNac)Ga which yields the compound (Dipp(2)NacNac)GaH(PHSiiPr(2)PH(2)) (5 b). Additionally, a derivative of compound 3, (Dipp(2)NacNac)GaCl(PHSiiPr(3)) (8), with an Cl atom bond to gallium instead of a hydrogen was obtained by the reaction of (Dipp(2)NacNac)GaCl2 with iPr(3)SiPHLi.
引用
收藏
页码：4655 / 4660
页数：6
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