A novel 3D Nd(III)–Bi(III) coordination polymer generated from EDTA ligand
摘要:
Novel 3D coordination polymer {NdBi(EDTA)(NO(3))(2)(H(2)O)(7.22)} with unprecedented type of coordination of EDTA ligand has been synthesised. It represents the first structurally characterised heterometallic lanthanide-bismuth polyaminocarboxylate and the first example of the Bi(EDTA)(-) moiety with coordinated NO(3)(-) anions. One of the two NO(3)(-) anions is disordered in two resolvable positions with the 0.74:0.26 occupancy factors. The major component can be formulated as [(H(2)O)(5)Nd(mu(4)-EDTA)Bi(NO(3))(2)](.)3H(2)O (1a), while the minor component can be described by [(NO(3))(H(2)O)(3)Nd(mu(4)-EDTA)Bi(NO(3))](.)2H(2)O (1b). (C) 2004 Elsevier B.V. All rights reserved.