Nephelauxetic series of in-plane ligands for square-pyramidal nitridochromium(V) complexes as studied by means of ESR spectroscopy

Akiko Hori, Takehiro Ozawa, Hironobu Yoshida, Yohko Imori, Yoshihiko Kuribayashi, Emiko Nakano, Nagao Azuma

研究成果: Article査読

15 被引用数 (Scopus)

抄録

The crystal structure of the nitridochromium(V) complex [CrN(salophen)] · MeCN [H2salophen=N,N′-bis(salicylidene)-o-phenylene-diamine] has been determined. The coordination geometry of this complex, similar to those of all the nitridochromium(V) complexes investigated so far, is square pyramidal with the nitride ion occupying the apex. The ESR parameters of the nitridochromium(V) complexes isolated so far were compared with one another to show an enormous expansion of the 3d electron cloud due to the strong Cr=N triple bonding. Moderate covalency in the in-plane bonds was also concluded. The nephelauxetic series of three types of the basal ligands is deduced to be salen≈salophen>bpb≈mebpb≈dmebpb>oep≈ttp (in nephlauxetic ratio) for the high-oxidation nitridochromium(V), H2salen=N,N′-bis(salicylidene)ethane-1,2-diamine, H2bpb=1,2-bis(pyridine-2-carboxamido)benzene, H2mebpb=1,2-bis(pyridine-2-carboxamido)-4-methylbenzene, H2dmbpb=1,2-bis(pyridine-2-carboxamido)-4,5-dimethylbenzene, H2oep=2,3,7,8,12,13,17,18-octa-ethylporphyrin and H2ttp=5,10,15,20-tetra-p-tolylporphyrin.

本文言語English
ページ(範囲)207-213
ページ数7
ジャーナルInorganica Chimica Acta
281
2
DOI
出版ステータスPublished - 1998 11 1
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 無機化学
  • 材料化学

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