Direct synthesis of dilithium tetraphenylporphyrin: facile reaction of a free-base porphyrin with vapor-deposited lithium
作者:Maik Schöniger、Stefan R. Kachel、Jan Herritsch、Philipp Schröder、Mark Hutter、J. Michael Gottfried
DOI:10.1039/c9cc07170a
日期:——
A solvent-free dilithium porphyrin was synthesized by direct reaction of free-base meso-tetraphenylporphyrin with elemental lithium in ultra-high vacuum. The reaction product dilithium tetraphenylporphyrin was studied by temperature-programmed desorption mass spectrometry (TPD-MS) and hard X-ray photoelectron spectroscopy (HAXPES). The solid-state reaction is thermodynamically favored, according to
The Doubly Oxidized, Antiaromatic Tetraphenylporphyrin Complex [Li(TPP)][BF<sub>4</sub>]
作者:Julie A. Cissell、Thomas P. Vaid、Glenn P. A. Yap
DOI:10.1021/ol060772l
日期:2006.5.1
[graphics]Oxidation of dilithium tetraphenylporphyrin, Li-2(TPP), yields the doubly oxidized porphyrin complex [Li(TPP)][BF4]. Free TPP appears to be unstable. The crystal structure of [Li(TPP)][BF4] reveals that the 16- atom C-N inner ring of the porphyrin consists of alternating single and double bonds. NMR spectroscopy and nucleus-independent chemical shift (NICS) calculations, in addition to the distortion from planarity observed in the crystal structure, indicate that the 16 pi-electron inner C-N ring of the porphyrin is antiaromatic.
Kim, Hee-Joon; Whang, Dongmok; Kim, Kimoon, Inorganic Chemistry, 1993, vol. 32, # 3, p. 360 - 362