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Dinucleating Hybrid Ligands Providing a “Soft” P ∩ N and an Adjacent N‐Rich Coordination Pocket − Controlled Synthesis of Unsymmetric Homodinuclear and Heterodinuclear Complexes
Author(s) -
Konrad Matthias,
Wuthe Susanne,
Meyer Franc,
Kaifer Elisabeth
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200109)2001:9<2233::aid-ejic2233>3.0.co;2-4
Subject(s) - chemistry , chelation , stereochemistry , crystallography , ion , chloride , metal , polymer chemistry , inorganic chemistry , organic chemistry
New unsymmetric dinucleating pyrazolate ligands with different chelating side arms in the 3‐ and 5‐positions of the heterocycle have been prepared. These ligands provide a “soft” P ∩ N site and either an adjacent “N 3 ” (HL a ) or “N 2 S 2 ” (HL b ) coordination pocket, and they have been employed to build homo‐ and heterobimetallic complexes featuring various types of asymmetry. Both L a and L b form the mixed‐spin dinickel(II) chloride systems 4 and 5 , respectively, which in the former case dimerizes via Cl bridges to give a tetranuclear compound. In the heterobimetallic complex 6 the Pd II is specifically housed within the P ∩ N compartment. All new complexes have been characterized by X‐ray crystallography, and conformational and electronic coupling between the two metal ions of the dinuclear scaffolds have been analyzed.