184477-86-9Relevant academic research and scientific papers
Main group compounds as amphoteric ligands to transition metals. Synthesis and molecular structure of Cr(CO)5[PPh2CH2Ga(CH2CMe 3)2·NMe3]
Beachley Jr.,Banks, Michael A.,Kopasz, John P.,Rogers, Robin D.
, p. 5170 - 5174 (2008/10/08)
The reactivities of the group 13 compounds, R2MCH2PPh2 and R2MPPh2, as amphoteric ligands to transition metals have been investigated. The ligands R2MCH2PPh2 (R = CH2-CMe3, CH2SiMe3; M = Ga, In) reacted readily with Cr(CO)5NMe3 in benzene solution to form Cr(CO)5[PPh2CH2MR2·NMe 3], whereas for ligands of the type R2MPPh2 (R = CH2CMe3, CH2SiMe3; M = Al, Ga, In), only the two aluminum compounds and (Me3CCH2)2GaPPh2 formed isolable products of the type Cr(CO)5[PPh2MR2·NMe3]. However, the gallium and indium ligands with (trimethylsilyl)methyl substituents (Me3SiCH2)2MPPh2 reacted with NEt4Mr(CO)5Cl (MT = Cr, Mo, W) to form products of the type NEt4MT(CO)5[PPh2MR2Cl]. All new compounds were characterized by their physical properties, C and H analyses, and 1H and 31P NMR and IR spectral properties. The identity of NEt4Cr(CO)5[PPh2In(CH2SiMe 3)2-Cl] was further confirmed by the subsequent identification of products from reactions with anhydrous HCl and with MeI. In addition, Cr(CO)5[PPh2CH2Ga(CH2CMe 3)2·NMe3] was characterized by an X-ray structural study.
