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膦硼烷化合物：质谱与热解

Phosphinoborine Compounds: Mass Spectra and Pyrolysis.

作者信息

Wall Leo A, Straus Sidney, Florin Roland E, Mohler Fred L, Bradt Paul

出版信息

J Res Natl Bur Stand A Phys Chem. 1959 Jul-Aug;63A(1):63-66. doi: 10.6028/jres.063A.004. Epub 1959 Aug 1.

DOI:10.6028/jres.063A.004
PMID:31216142
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5287103/
Abstract

The mass spectra of tetramethylphosphinoborine trimer, [P(CH)B(CH)] (I) and a a compound, P(CH)BH, (II) prepared from dimethylphosphinoborine were observed, and the compounds were pyrolyzed at 300 to 500° C. Most peaks in the spectrum of (I) came from the P-B, B-C, and P-C cleavages. The mass spectrum of (II) was much more complicated with evidence for methyl group redistribution. The pyrolysis of both compounds indicates a very complicated mechanism with many unidentifiable compounds. Trends in the formation of volatile products indicate that both compounds are completely decomposed in 4 hr at 450° C. Compound (I) produces trimethylboron, which disappears rapidly above 400° C. Neither (I) nor (II) formed ethane or elemental phosphorus.

摘要

观察了四甲基膦硼烷三聚体[P(CH₃)₂B(CH₃)]₃（I）以及由二甲基膦硼烷制备的化合物P(CH₃)₂BH₂（II）的质谱，并在300至500°C下对这些化合物进行热解。（I）的质谱中大多数峰来自P-B、B-C和P-C键的断裂。（II）的质谱要复杂得多，有甲基重新分布的迹象。两种化合物的热解表明其机理非常复杂，会生成许多无法识别的化合物。挥发性产物形成的趋势表明，两种化合物在450°C下4小时内会完全分解。化合物（I）会生成三甲基硼，在400°C以上会迅速消失。（I）和（II）都没有形成乙烷或元素磷。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/24f9dfaaf7f2/jresv63an1p63_a1bf5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/bdde61b8d752/jresv63an1p63_a1bf6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/35a20e1dba1d/jresv63an1p63_a1bf1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/5f4287cd5400/jresv63an1p63_a1bf2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/cc5a0609f81f/jresv63an1p63_a1bf3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/d38d3a03258d/jresv63an1p63_a1bf4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/24f9dfaaf7f2/jresv63an1p63_a1bf5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/bdde61b8d752/jresv63an1p63_a1bf6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/35a20e1dba1d/jresv63an1p63_a1bf1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/5f4287cd5400/jresv63an1p63_a1bf2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/cc5a0609f81f/jresv63an1p63_a1bf3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/d38d3a03258d/jresv63an1p63_a1bf4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/64f6/5287103/24f9dfaaf7f2/jresv63an1p63_a1bf5.jpg

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