Preparation and spectroscopic characterization of substituted pentacyanoferrates(II) with phosphine or phosphite ligands.

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概要

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• Twenty-two substituted pentacyanoferrates(II) with the formula Na<SUB>3</SUB>[Fe(CN)<SUB>5</SUB>PX<SUB>3</SUB>]·2H<SUB>2</SUB>O (PX<SUB>3</SUB>=phosphine or phosphite) have been prepared by ligand substitution of sodium amminepentacyanoferrate(II). The phosphite complexes show smaller isomer shifts than the phosphine complexes. The phosphine complexes involving an aryl or bulky phosphine exhibit larger quadrupole splitting than the phosphite complexes. These tendencies in M\ddotossbauer parameters are discussed in terms of the π-acceptor capability of the phosphine and phosphite ligands. The linear dependence of the isomer shifts on both CN stretching frequencies and d-d transition energies is interpreted on the basis of the predominance of iron-to-phosphorus π back-donation.

• 公益社団法人 日本化学会の論文

著者

• Inoue Hidenari

  Department Of Applied Chemistry Faculty Of Science And Technology Keio University

• Sasagawa Masahiro

  Department of Applied Chemistry, Faculty of Science and Technology, Keio University

• Shirai Tsuneo

  Department of Applied Chemistry, Faculty of Science and Technology, Keio University

• Fluck Ekkehard

  Institut für Anorganische Chernie, Universität Stuttgart, Pfaffenwaldring 55

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