Synthesis and structures of tin(II) and lead(II) 1-aza-allyls;: the [N(SiMe3)C(Ph)C(SiMe3)2]- ligand

被引：31

作者：

Hitchcock, PB ^{[1
]}

Lappert, MF ^{[1
]}

Layh, M ^{[1
]}

机构：

[1] Univ Sussex, Chem Lab, Brighton BN1 9QJ, E Sussex, England

来源：

INORGANICA CHIMICA ACTA | 1998年 / 269卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

crystal structures; organotin complexes; organolead complexes; 1-aza-allyl complexes;

D O I：

10.1016/S0020-1693(97)05788-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new lithium 1-aza-allyl Li[N(R)C(Ph)CR2] (THF) (1) (Li(LL")(THF)) has been prepared in high yield from LiCR3(THF)(2) and benzonitrile (R = SiMe2; THF = tetrahydrofuran). From 1 and MCl2, the stable 1-aza-allyls [M(mu-Cl)(LL")] (2 (M = Sn); 3 (M = Pb)) and M(LL")(2) (4 (M=Sn); 5 (M=Pb)) were obtained. Each of the compounds 1-5 was fully characterised by multinuclear NMR spectroscopy (the compounds are fluxional in solution), mass spectrometry and for 3, 4 and 5 single crystal X-ray diffraction. Crystalline 3 is a centrosymmetric dimer having terminal eta(3)-1-aza-allyl ligands with one bridging Cl- strongly bonding, Pb-Cl = 2.609(3) Angstrom, and the other much less so, Pb...Cl = 3.276(3) Angstrom. Crystalline 4 and 5 are mononuclear (eta(3)-1-aza-allyl)metal(II) enamides, M[N(R)C(Ph)CR2][N(R)C(Ph):CR2]. Also reported are the synthesis and NMR spectra of PbCl[N(R)C(Bu-1)CHR] (6).

引用

页码：181 / 190

页数：10

共 50 条

[1] Synthesis and structures of tin(II) and lead(II) 1-aza-allyls; the [N(SiMe3)C(Ph)C(SiMe3)2]- ligand
Chemistry Laboratory, University of Sussex, Brighton BN1 9QJ, United Kingdom
Inorg. Chim. Acta, 1 (181-190):
[2] Syntheses and structures of lithium cyanocuprates containing the C(SiMe3)3, C(SiMe3)2 (SiMe2NMe2) and C(SiMe3)(SiMe2OMe)2 groups
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[3] Compounds of germanium, tin, and lead containing the ligand C(SiMe3)2(SiMe2C5H4N-2)
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[4] Synthesis and crystal structures of the compounds [Sn{C(SiMe2Ph)3}Cl]2, [Pb{C(SiMe3)3}Cl]3, and [M{C(SiMe3)2(SiMe2OMe)}Cl]2 (M = Sn or Pb)
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[5] REARRANGEMENTS OF THE METALLODIPHOSPHAPROPENES (ETA-5-C5ME5)(CO)2FEP(SIME3)-P=C(R)(SIME3) (R=SIME3,PH)
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[6] Reactions of the alkyltrihydroaluminate [Li(thf)2{AlH3[C(SiMe3)3]}]2.: Crystal structures of [Li(tmen)2][AlH3{C(SiMe3)3}], [AlBr2-{C(SiMe3)3}]•thf, [AlI2{C(SiMe3)3}]•thf, [Li(thf)2(μ-NHPh)2-{AlH[C(SiMe3)3]}] and {Li(thf)4][Al(NHPh)3{C(SiMe3)3}]
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[7] A novel organolead(II) species, the plumbacycloalkane derivative [CH2SiMe2C(SiMe3)2PbC(SiMe3)2SiMe2CH2]
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[8] Synthesis and structure of the cyclic amido bismuth imide, {[(Me3Si)2N]Bi[[μ-N(SiMe3)]}2, via loss of SiMe3 from a [N(SiMe3)2]1- ligand
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[9] Synthesis and structures of crystalline Li, Al and Sn(II) 1-azaallyls and β-diketiminates derived from [Li{μ,η3-N(SiMe3)C(Ad)C(H)SiMe3}]2 (Ad = 1-adamantyl)
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[10] Synthesis and structures of alkali metal amides derived from the ligands [N(SiMe2Ph)(SiMe3)]-, [N(tBu)(SiMe3)]-, [N(Ph)(2-C5H4N)]- and [N(2-C5H4N)2]-
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