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Synthesis and Characterization of Phthalocyanines with Direct Si−Si Linkages
Author(s) -
Kobayashi Nagao,
Furuya Fumio,
Yug GyeongChang,
Wakita Hisanobu,
Yokomizo Mitsutoshi,
Ishikawa Naoto
Publication year - 2002
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/1521-3765(20020315)8:6<1474::aid-chem1474>3.0.co;2-p
Subject(s) - xanes , absorption spectroscopy , x ray absorption spectroscopy , magnetic circular dichroism , crystallography , absorption (acoustics) , chemistry , cyclic voltammetry , dimer , diimine , circular dichroism , bond length , mass spectrometry , spectroscopy , photochemistry , analytical chemistry (journal) , materials science , spectral line , crystal structure , organic chemistry , electrochemistry , optics , physics , catalysis , electrode , quantum mechanics , astronomy , composite material , chromatography
Several cofacial phthalocyanines (Pcs) with an Si−Si linkage were obtained by one‐step condensation of 1 H ‐isoindole‐1,3(2 H )‐diimine with hexachlorodisilane as template in quinoline. They were characterized by gel‐permeation chromatography, IR, NMR spectroscopy, and mass spectrometry, and cyclic voltammetry. The results strongly suggest that we indeed obtained Pc dimers directly linked by an Si−Si bond using this novel concept of utilizing a compound/salt with an element–element bond as a template. The cofacial dimer structures are reasonably supported by X‐ray absorption near‐edge structure (XANES), electronic absorption and magnetic circular dichroism (MCD) spectra, and molecular orbital (MO) calculations. Interestingly, they show an electronic absorption spectrum very similar to that of silicon tetrabenztriazacorrole (SiTBC).