THE CRYSTAL-STRUCTURE AND PROPERTIES OF TENA-POLY[TETRAAQUA-BIS(MU-BETA-ALANINATO-KAPPA(3) O, O', O'')-TETRAKIS (MU-BETA-ALANINATO-KAPPA-O-2,O')DINEODYMIUM(III)] HEXACHLORIDE

A Nd(III) complex with beta-alanine of empirical formula [Nd(beta-ala) (3). 2H(2)O]Cl-3 has been synthesised and characterised. The crystal s tructure of the complex was studied using single-crystal X-ray diffrac tion methods. When heated the complex loses water molecules and subseq uent decomposition to Nd2O3 takes place. The complex crystallizes in s pace group P2(1)/c with a = 10.846(3), b = 19.552(4), c = 9.464(3) Ang strom, beta = 102.02(3)degrees, Z = 4. The structure consists of polym eric chains connected through hydrogen bonds. Neodymium(III) ions in t he chains are bonded alternately through two and four carboxylate brid ges from beta-alanine molecules. Carboxylate groups are bidentate-chel ating and tridentate chelating-bridging. Two molecules of water comple te the coordination number oi Nd(III), which is nine.