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Facile Syntheses of Titanium(II), Tin(II), and Vanadium(II) Porphyrin Complexes through Homogeneous Reduction.
Xiaotai Wang1, Steve D. Gray, Jinyuan Chen
1Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111.
Inorganic Chemistry
|October 24, 2001
Abstract:
Facile syntheses of the meso-tetra-p-tolylporphyrin (TTP) complexes trans-(TTP)Ti(THF)(2) (1), (TTP)Sn (2), and trans-(TTP)V(THF)(2) (3) are achieved through homogeneous reduction of high-valent precursors using NaBEt(3)H. The composition of the new compound trans-(TTP)Ti(THF)(2) was determined by spectroscopic and chemical characterization. Ligand displacement reactions of trans-(TTP)Ti(THF)(2) with t-BuNC produced a new Ti(II) complex, trans-(TTP)Ti(t-BuNC)(2). The ligand-binding preference of (TTP)Ti(II)L(n)() (n = 1, 2) is picoline approximately pyridine > t-BuNC > PhC&tbd1;CPh > EtC&tbd1;CEt > THF.