SYNTHESIS AND STRUCTURES OF THE HEAVIER ALKALI-METAL ALKYLS - THE X-RAY STRUCTURES OF [NA(MU-R)]INFINITY AND [RB(MU-R)(PMDETA)]2[R=CH(SIME3)2, PMDETA = (ME2NCH2CH2)2NME]

被引:54
作者
HITCHCOCK, PB
LAPPERT, MF
LEUNG, WP
LIU, DS
SHUN, T
机构
关键词
D O I
10.1039/c39930001386
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The crystalline, hexane-soluble metal alkyls [Na(mu-R)]infinity 1, [KR(pmedta)]m, and [Rb(mu-R)(pmdeta)]2 2 [R = CH(SiMe3)2, pmdeta = (Me2NCH2CH2)2NMe] have been prepared from LiR with equimolar portions of NaOBu(t), KOBu(t) + pmdeta, and Rb(OC6H2But2-2,6-Me-4) + pmdeta, respectively; 1 has chains of alternating cations and planar R- anions which are approximately orthogonal to the chains, (Na-C)av 2.555(10) angstrom (Na-C-H)av 76(3) and (Na-C-Na)av 152(1)-degrees, whereas 2 consists of discrete dimers, (Rb-C)av 3.412(9) angstrom, Rb-C-Rb 75.3(2) and C-Rb-C 104.7(2)-degrees.
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页码:1386 / 1387
页数:2
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