Synthesis of a new binucleating ligand LH4: synthesis and X-ray structures of anti-[Co2(LH4)(OH2)2](NO3)4·5H2O, anti-[Ni2(LH4)(NCMe)2](PF6)4·4H2O, anti-[Zn2(LH4)(NO3)2](NO3)2 and syn-[Cu2(LH2)](BPh4)2
Abstract
The binuclear octahedral MII complexes [Co2(LH4)(H2O)2]4+, [Ni2(LH4)(NCMe)2]4+ and [Zn2(LH4)(NO3)2]2+, incorporating the new 10 coordinate pendant arm ligand LH4, all show an anti-configuration; in contrast the CuII complex [Cu2(LH2)]2+ adopts a syn-configuration incorporating intramolecular H-bonding.