Mixed-anion complexes with a bipyrazolyl ligand. A new entry to a realm of three-dimensional five-connected coordination topologies†
Abstract
Cross-linking of corrugated square grid coordination layers by anionic bridging groups generates five-connected coordination networks; the 3D topologies of mixed-anion cobalt(II) and nickel(II) complexes with a tetramethyl-substituted 4,4′-bipyrazolyl ligand are supported by μ-SO42− functions and exist as neutral or cationic five-connected arrays involving additional terminal (NCS−) or non-coordinated (NO3−, ClO4−) groups.