Mixed triorganobismuthines RAr<sub>2</sub>Bi [Ar = C<sub>6</sub>F<sub>5</sub>, 2,4,6-(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>C<sub>6</sub>H<sub>2</sub>] and hypervalent racemic Bi-chiral diorganobismuth(<scp>iii</scp>) bromides RArBiBr (Ar = C<sub>6</sub>F<sub>5</sub>, Mes, Ph) with the ligand R = 2-(Me<sub>2</sub>NCH<sub>2</sub>)C<sub>6</sub>H<sub>4</sub>. Influences of the organic substituent
作者:Marian Olaru、Mihai G. Nema、Albert Soran、Hans J. Breunig、Cristian Silvestru
DOI:10.1039/c5dt05074j
日期:——
Triorganobismuthines R(C6F5)2Bi (1) and R[2,4,6-(C6F5)3C6H2]2Bi (2) [R = 2-(Me2NCH2)C6H4] were synthesized by reaction of RBiBr2 with C6F5MgBr and 2,4,6-(C6F5)3C6H2Li, respectively, in a 1 : 2 molar ratio. The Bi-chiral bromides R(C6F5)BiBr (3), R(Mes)BiBr (4), and R(Ph)BiBr (5) were obtained from RBiBr2 and C6F5MgBr, MesMgBr or PhMgBr, or from PhBiBr2 and RLi, in a 1 : 1 molar ratio. The molecular structures of 1–5
三有机铋R(C 6 F 5)2 Bi(1)和R [2,4,6-(C 6 F 5)3 C 6 H 2 ] 2 Bi(2)[R = 2-(Me 2 NCH 2)通过使RBiBr 2与C 6 F 5 MgBr和2,4,6-(C 6 F 5)3 C 6 H 2 Li分别以1:2的摩尔比反应来合成C 6 H 4 ] 。双手性溴化物R(C 6从RBiBr 2和C 6 F 5 MgBr,MesMgBr或PhMgBr或从PhBiBr 2和RLi获得F 5)BiBr(3),R(Mes)BiBr(4)和R(Ph)BiBr(5)。摩尔比为1:1。1–5的分子结构是通过单晶X射线衍射确定的,并考虑到了该物种的手性。提出了固态的超分子方面。基于多核(1 H,13 C,19 F)NMR光谱讨论了标题化合物的溶液行为,包括动力学方面。