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Publication . Article . 2007

Germanium Phthalocyanine, GePc, and the Reduced Complexes SiPc(pyridine)2 and GePc(pyridine)2 Containing Antiaromatic π-Electron Circuits

Julie A. Cissell; Thomas P. Vaid; and Antonio G. DiPasquale; Arnold L. Rheingold;
Published: 18 Aug 2007 Journal: Inorganic Chemistry, volume 46, pages 7,713-7,715 (issn: 0020-1669, eissn: 1520-510X, Copyright policy )
Publisher: American Chemical Society (ACS)
Abstract

The reaction of GeCl2(dioxane) with K2Pc(DMF)4 yields germanium phthalocyanine, GePc. GePc dissolves in pyridine to form GePc(py)2. The 1H NMR spectrum of GePc(py)2 and nucleus-independent chemical shift (NICS) calculations on GePc(NMe3)2 both show the presence of a strong paratropic ring current. That ring current, along with the bond-length alternation in the crystal structure of GePc(tBuPy)2, indicates the presence of an antiaromatic π-electron circuit in GePc(py)2. SiPc(py)2 was synthesized, and its electronic structure is similar to that of GePc(py)2.

Subjects by Vocabulary

Microsoft Academic Graph classification: Antiaromaticity Crystal structure Phthalocyanine chemistry.chemical_compound chemistry Crystallography Inorganic chemistry Germanium chemistry.chemical_element Electronic structure Proton NMR Electron Pyridine

Subjects

Inorganic Chemistry, Physical and Theoretical Chemistry

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Inorganic Chemistry
Article . 2007
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