Ba(SCN)2(H2O) complex of the cis-syn-cis isomer of 2,5,8,15,18,21-hexaoxatricyclo[20,4,0,09,14]hexacosane(dicyclohexyl-18-crown-6) [Ba(SCN)2(H2O)(C20H36O6)]

The structure of the title compound has been redetermined. Hydrogenation of dibenzo-18-crown-6 yields two conformational isomers which were proposed to be the cis-syn-cis and the cis-trans-cis isomers of dicyclohexyl-18-crown-6. The previous study had established that the title complex contains the ligand which has the cis-syn-cis conformation but had resulted in some inaccurate bond lengths and also in an uncertainty regarding the presence of a water of hydration in the crystal. This study confirmed the report of the general conformation of the complex, resulted in more precise bond lengths and clearly established that a water of hydration was present at the crystal.     

Synthesis,structure and magnetism of a new manganese carboxylate cluster: [Mn16O16(OMe)6(OAc)16(MeOH)3(H2O)3].6H2O

A new manganese(III/IV) carboxylate cluster [Mn16O16(OMe)6(OAc)16(MeOH)3(H2O)3].6H2O has been structurally characterised and shown to display net antiferromagnetic coupling with preliminary evidence for single-molecule magnetic behaviour.