Spectroscopy and Photochemistry of Triplet Methylpentadiynylidene (Me− C C− C̈− C C− H)

…, NP Bowling, RJ McMahon

文献索引：Thomas, Phillip S.; Bowling, Nathan P.; McMahon, Robert J. Journal of the American Chemical Society, 2009 , vol. 131, p. 8649 - 8659

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被引用次数: 15

摘要

Triplet carbene methylpentadiynylidene, MeC5H (1), was investigated in cryogenic matrices by IR, UV/vis, and EPR spectroscopy. Broadband irradiation (λ> 497 nm) of the isomeric diazo compounds, 1-diazo-hexa-2, 4-diyne (2) or 2-diazo-hexa-3, 5-diyne (3), generates triplet carbene 1. EPR spectra yield zero-field splitting parameters (| D/hc|= 0.62 cm− 1,| E/hc|< 0.0006 cm− 1), which are typical for a triplet carbene with axial symmetry. The ...