Reaction of lithium shot with PClR2[R = CH(siMe3)2] in OEt2 at 25 °C affords the title phosphide [Li(µ-PR2)]2, (1), which in c6D6 shows a triplet 7Li n.m.r. signal, and reacts as (a) a Lewis acid to afford the monomeric Li(PR2)(NMe2[CH2]2NMe2), (2), (which in C6H6 shows a doublet 7Li n.m.r. signal), (b) a R2 transfer agent to yield PR2X (X = H or Me) with XCl, or (c) a reducing agent to furnish P·R2with ButCl or Sncl2; compound (1) has a planar Li2P2 ring with average Li–P and P–C distances of 2.473(10) and 1.892(7)Å, and mean LiPLi, PliP, and CPC angles of 72.2(3), 107.8(3), and 102.0(5)°.
25 °C 时,
锂射与 PClR2[R = CH(siMe3)2]在 OEt2 中反应生成标题
磷化物 [Li(µ-PR2)]2,(1),在 c6D6 中显示三重 7Li n.m.r. 信号,并作为 (a)
路易斯酸反应生成
单质 Li(PR2)(NMe2[CH2]2NMe2),(2)(在
C6H6 中显示双重 7Li n.m.r. 信号),(b) 作为 R2 转移剂生成 PR2X(X = H 或 Me)与 XCl,或 (c) 作为还原剂生成 P-R2与 ButCl 或 Sncl2;化合物 (1)化合物 (1) 具有一个平面 Li2P2 环,其平均 Li-P 和 P-C 距离分别为 2.473(10) 和 1.892(7)埃,平均 LiPLi、PliP 和 CPC 角分别为 72.2(3)、107.8(3) 和 102.0(5)°。