Molecular Alumo- and Gallosilicate Hydrides Functionalized with Terminal M(NR<sub>2</sub>)<sub>3</sub> and Bridging M(NR<sub>2</sub>)<sub>2</sub> (M = Ti, Zr, Hf; R = Me, Et) Moieties
作者:Oscar Fernando-López、Karla Trujillo-Hernández、Víctor Augusto Moreno-Martínez、Diego Martínez-Otero、Erandi Bernabé-Pablo、Raúl Huerta-Lavorie、Vojtech Jancik
DOI:10.1021/acs.inorgchem.3c01413
日期:2023.9.11
A general synthetic strategy for the systematic synthesis of group 4 MIV heterometallic complexes LMIII(H)(μ-O)Si(μ-O)(OtBu)2}nMIV(NR2)4–n (L = [HCC(Me)N(2,6-iPr2C6H3)}2; MIII = Al or Ga; n = 1 or 2; MIV = Ti, Zr, Hf; R = Me, Et), based on alumo- or gallosilicate hydride ligands bearing a Si–OH moiety, is presented. The challenging isolation of these metalloligands involved two strategies. On the
系统合成第 4 族 M IV异金属配合物L M III (H)(μ-O)Si(μ-O)(O t Bu) 2 } n M IV (NR 2 ) 4– n ( L = [HCC(Me)N(2,6- i Pr 2 C 6 H 3 )} 2;M III = Al 或 Ga;n = 1 或 2;M IV = Ti、Zr、Hf;R = Me, Et),基于带有 Si-OH 部分的铝硅酸盐或镓硅酸盐氢化物配体。这些金属配体的分离具有挑战性,涉及两种策略。一方面,L AlH 2与(HO) 2 Si(O t Bu) 2发生酸碱反应生成L AlH(μ-O)Si(OH)(O t Bu) 2 ( 1 ),而另一方面,(HO) 2 Si(O t Bu) 2氧化加成至L Ga 产生镓类似物( 2 )。这些金属配体成功地稳定了同一分子中具有不同酸碱性质的两个氢原子(M III –H 和 SiO-H)。1和2与第 4