VII-I-1 On the Structure of Transition Metal-Linked Molecular Squares

Makoto FUJITA, Osamu SASAKI,* Takashi MITSUHASHI,* Toshiyasu FUJITA,* Jun YAZAKI,* Kentaro YAMAGUCHI* and Katsuyuki OGURA* (*Chiba University)

[J. Chem. Soc. Chem. Commun. 118, 899 (1996)]

The structure of molecular square 1 assembling from (en)Pd(NO₃)₂ and 4,4'-bipyridine was confirmed by X-ray crystallography, whereas squares assembling from (en)Pd(NO₃)₂ and larger ligands, py-X-py (py = 4-pyridyl, X = CH=CH, C-C, p-C₆H₄) were shown to exist in equilibrium with molecular triangles.

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