Paramagnetic NMR evidence for a novel tetrahydroboratoiron(Ⅲ) porphyrin complex

다국어 초록 (Multilingual Abstract)

Complexes involving covalently bound tetrahydroborate ion have been reported for many transition, lanthanide, and actinide metals. Tetrahydroborate complexes are generally prepared by reaction of an alkali tetrahydroborate with the corresponding metal halide, or by treatment of a solution of a metal alkoxide with diborane. The chemical and physical nature of tetrahydroborate complexes has been investigated in terms of ligand activation and bond configuration in catalytic transformation such as polymerization, oligomerization, and hydrogenation of olefins. Hence the structural, analytical, and chemical characteristics of the tetrahydroborate ligand are of great importance in organotransition metal chemistry.
To the best of our knowledge, no tetrahydroborate complexes are known for iron porhyrins. Here we describe evidence for generation and solution characterization of the tertahydroboration(III) porphyrin complexes as a product from reaction of tetrabutylammonium borohydride (Bu_(4)NBH_(4)) and chloroiron(III) tetraphenylporphyrin.

목차 (Table of Contents)

• Experimental Section
• Results and Discussion
• Conclusions
• References