Hydrogen bonded networks based on lanthanide(III) complexes of N,N’-dimethylurea (DMU): preparation, characterisation, and crystal structures of [Nd(DMU) 6][NdCl6

Abstract

Abstract In order to examine the possibilities of using lanthanide (III) 3( anions self-assemble to form a hydrogen-bonded 3D architecture in 2. The hydrogen bonding functionalities on the molecules of 6 create also a 3D structure. Two main motifs of interionic/intermolecular hydrogen bonds have been observed: N Ã/HÁ Á ÁCl in 2 and N Ã/HÁ Á ÁO(NO 3 ( ) in 6; weak CÃ/HÁ Á ÁCl hydrogen bonding interactions are also present in 2. The complexes were characterised by magnetic susceptibilities at room temperature and spectroscopic (IR, far-IR, Raman) techniques. The vibrational data are discussed in terms of the nature of bonding and the known structures of the neodymium(III) complexes.