Journal
INORGANIC CHEMISTRY
Volume 45, Issue 17, Pages 6706-6712Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic060331y
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The heteroleptic lithium amide, [(Me3Sn)(Me3Ge)NLi.(Et2O)](2) (2), reacts with MCl2 (M = Sn, Ge, Pb) to yield the corresponding cubane complexes [M(mu(3)-NGeMe3)](4) [M = Sn (3), Ge (4), Pb (5)]. In an analogous reaction with SnCl2, the lithium stannylamide, [(Me3Sn)(2)NLi.(Et2O)](2) (1), produces the mixed-valent Sn congener [Sn(mu(3)-NSnMe3)](4) (6). All imidocubanes contain both di- and tetravalent group 14 metals that are bridged by N. These structures are comprised of M4N4 (M = Sn, Pb, Ge) cores that possess varying distortion from perfect cube geometry. The Pb derivative (5) exhibits enhanced volatility and vapor-phase integrity.
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