Coordination polyhedra of eight-coordinate zirconium complexes and a network built up by crisscross Cl...Cl contacts

• Two bis(quadridentate) eight-coordinate zirconium complexes, Zr(5-Cldse)(2) (1) [5-Cldse = N,N'-di(5-chlorosalicylidene)ethylenediamino] and Zr(pida)(2) (2) [pida = N-(2-pyridylmethyl) iminodiacetato], have been prepared and crystallographically characterized. A distorted dodecahedron of N4O4 atoms has been found for the zirconium(IV) center of complexes (1) and (2). A network is constructed in the crystalline state of (1) by crisscross intermolecular Cl...Cl contacts (3.45 and 3.43 angstrom), which are shorter than the sum of spherical van der Waals radii (3.50 angstrom).

Nyckelord

schiff-base complexes

molecular-structure

crystal-structures

stereochemical rearrangements

chelate

bis(n,n'-disalicylidene-1,2-phenylenediaminato)zirconium(iv)

polymerization

reactivity

packing

radii

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