Neutral binuclear rare-earth metal complexes with four μ<sub>2</sub>-bridging hydrides
作者:Weifeng Rong、Dongliang He、Meiyan Wang、Zehuai Mou、Jianhua Cheng、Changguang Yao、Shihui Li、Alexander A. Trifonov、Dmitrii M. Lyubov、Dongmei Cui
DOI:10.1039/c4cc07262f
日期:——
The first neutral dimeric rare-earth metal hydride complexes containing quadruply bridged hydrido ligands were prepared, in which the intramolecular activation triggered by a THF molecule has been observed.
Rare-Earth-Metal Complexes Bearing Phosphazene Ancillary Ligands: Structures and Catalysis toward Highly Trans-1,4-Selective (Co)Polymerizations of Conjugated Dienes
作者:Weifeng Rong、Dongtao Liu、Huiping Zuo、Yupeng Pan、Zhongbao Jian、Shihui Li、Dongmei Cui
DOI:10.1021/om300967h
日期:2013.3.11
4-regularity-enriched polyisoprene (70.6%). Highly stereospecific homopolymerizations of isoprene (trans-1,4-content: 97.0%) and butadiene (trans-1,4-content: 94.0%) were achieved by using the borohydrido complex 5 upon the activation of dibutylmagnesium. The copolymerization of isoprene and butadiene with 1a/[Ph3C][B(C6F5)4/AliBu3] gave randomly arranged trans-1,4-regulated polybutadiene and polyisoprene sequences
Fine-Tuning of Lewis Acidity: The Case of Borenium Hydride Complexes Derived from Bis(phosphinimino)amide Boron Precursors
作者:Kuldeep Jaiswal、Billa Prashanth、Sanjay Singh
DOI:10.1002/chem.201600382
日期:2016.7.25
cations: [L′BH]+[HB(C6F5)3]− (5), [L′BH]+[B(C6F5)4]− (6), [LBH]+[HB(C6F5)3]− (7), and [LBH]+[B(C6F5)4]− (8). Synthesis of a chloroborenium species [LBCl]+[BCl4]− (9) without involvement of a weakly coordinating anion was also demonstrated from a reaction of LBH2 (4) with three equivalents of BCl3. It is clear from this study that the sterically bulky strong donor bis(phosphinimino)amide ligand plays a crucial
双(phosphinimino)的反应胺LH和L'H带我2小号⋅ BH 2氯,得到氯硼烷络合物LBHCl(1)和L'BHCl(2),和L'H与BH反应3 ⋅我2小号给二氢硼烷络合物L'BH 2(3)(LH = [(2,4,6-Me 3 C 6 H 2 N)P(Ph 2)} 2 N] H和L'H = [ 6‐ i Pr 2 C 6 H 3 N)P(Ph 2)} 2N] H)。此外,路易斯酸B(C 6 F 5)3或弱配位离子对[Ph 3 C] [B(C 6 F )介导的L'BH 2(3)和LBH 2(4)中的氢化物离子的提取5)4 ]平稳生成一系列的氢化硼阳离子:[L'BH] + [HB(C 6 F 5)3 ] -(5),[L'BH] + [B(C 6 F 5)4 ] −(6),[LBH] + [HB(C 6 F 5)3 ] -(7)和[LBH] + [B(C 6 F 5)4 ] -(8)。还从LBH