Hydrothermal synthesis and structural characterization of a novel gadolinium(III) coordination polymer [Gd(Hdtpc)(OH)(H 2O)] n

Abstract

Hydrothermal reaction of Gd 2O 3 with orotic acid (2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid, H 3dtpc) yielded a novel polymeric complex [Gd(Hdtpc)(OH)(H 2O)] n ( 1) possessing the three-dimensional network constructed by eight-coordinate Gd(III) centers. The whole structure of 1 can be viewed as Gd(III) chains linked by orotate spacers. Crystallographic data for the complex: orthorhombic, space group Pna2 1, a=10.0654(10), b=16.5208(17), c=4.6223(5) Å, V=768.64(14) Å 3, Z=4, D c=2.993 gcm −3 .