Bis(μ-3-nitrobenzene-1,2-dicarboxylato)-κ4 O 1,O 2:O 1,O 1′;κ 4 O 1,O 1′:O 1,O 2-bis[triaqua(6-carboxy-2-nitrobenzoato-κ2 O 1,O 6)neodymium(III)] dihydrate

Abstract

The title complex, [Nd2(C8H3NO6)2(C 8H4NO6)2(H2O)6]·2H 2O, consists of dimeric units related by an inversion center. The NdIII atom is nine-coordinated by three O atoms from water molecules and six from carboxylate atoms. The 1,2-dicarboxylate acid molecules are in a single and double deprotonation stage and exhibit two coordination modes, viz. μ2-(κ4, O 1: O 2: O 2: O 3) and μ1-(κ2, O 2: O 3), which are responsible for the dimeric structure framework. The dimeric structure is then assembled into a three-dimensional supramolecular framework via O-H⋯O hydrogen bonds.