Synthesis and structures of novel bis- and tetrakis-cyclodiphosphazane compounds appended to a diol or a tetra-ol
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- 作者：Kommana ; Praveen ; Vittal ; J.J. ; Kumara Swamy ; K.C.
- 关键词：Cyclodiphosphazanes ; Pentacoordinate ; X-ray structures
- 刊名：Polyhedron
- 出版年：2003
- 出版时间：March 15, 2003
- 年：2003
- 卷：22
- 期：6
- 页码：843-847
- 全文大小：172 K
文摘
The bis-cyclodiphosphazane compound Et2C[CH2OP(μ-N-t-Bu)2PNH-t-Bu]2 (2) and the tetrakis–cyclodiphosphazane compound C[CH2OP(μ-N-t-Bu)2PNH-t-Bu]4 (3) have been synthesized by treating 2,2-diethyl-1,3-propanediol or pentaerythritol with 2 or 4 equiv. of [ClP(μ-N-t-Bu)2P(HN-t-Bu)] (1), respectively. Compounds 2 and 3 have been characterized by X-ray crystallography and solution state NMR. Oxidative addition of o-chloranil to 2 and 3 yields the novel compounds Et2C[CH2OP(μ-N-t-Bu)2P{(HN-t-Bu)(1,2-O2C6Cl4)}]2 (4) and C[CH2OP(μ-N-t-Bu)2P{(HN-t-Bu)(1,2-O2C6Cl4)}]4 (5) having two or four P(III)
NP(V) centers, respectively. The 31P NMR spectra of compounds 4 and 5 show characteristic doublets in the tri- and penta-coordinated regions.
NP(V) centers, respectively. The 31P NMR spectra of compounds 4 and 5 show characteristic doublets in the tri- and penta-coordinated regions.