Dispersion Energy Enforced Dimerization of a Cyclic Disilylated Plumbylene

被引：71

作者：

Arp, Henning ^{[1
]}

Baumgartner, Judith ^{[1
]}

Marschner, Christoph ^{[1
]}

Zark, Patrick ^{[2
]}

Mueller, Thomas ^{[2
]}

机构：

[1] Graz Univ Technol, Inst Anorgan Chem, A-8010 Graz, Austria

[2] Carl von Ossietzky Univ Oldenburg, Inst Reine & Angew Chem, D-26111 Oldenburg, Germany

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 14期

关键词：

DOUBLE-BOND; MAIN-GROUP; NONCOVALENT INTERACTIONS; POLARIZATION TRANSFER; MOLECULAR-STRUCTURE; MAGNETIC-RESONANCE; CARBENE HOMOLOGS; TIN; GERMANIUM; ELEMENTS;

D O I：

10.1021/ja300654t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By reaction of 1,4-dipotassio-1,1,4,4-tetrakis-(trimethylsilyl)tetramethyltetrasilane with PbBr2 in the presence of triethylphosphine a base adduct of a cyclic disilylated plumbylene could be obtained. Phosphine abstraction with B(C6F5)(3) led to formation of a base-free plumbylene dimer, which features an unexpected single donor-acceptor PbPb bond. The results of density functional computations at the M06-2X and B3LYP level of theory indicate that the dominating interactions which hold the plumbylene subunits together and which define its actual molecular structure are attracting van der Waals forces between the two large and polarizable plumbylene subunits.

引用

页码：6409 / 6415

页数：7

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