Hydrothermal Synthesis, Crystal Structure and Spectroscopic Investigations of [Y(C6NO2H5)3(H2O)2]n(1.5nZnCl4)•nH2O with Unprecedented Polycationic Chains

A new heterometallic 4f-3d complex [Y(C6NO2H5)(3)(H2O)(2)](n)(1.5nZnCl(4))center dot nH(2)O(1), was synthesized via a hydrothermal reaction and structurally characterized. Complex 1 crystallized in the monoclinic system with space group P2(1)/c: a=0.94847(9) nm, b=2.0947(2) nm, c=1.6001(2) nm, beta=104.467(2)degrees, V=3.0781(5) nm(3) M-r=823.04, D-c=1.776 g/cm(3) S=1.009, mu(Mo K alpha)=3.603 mm(-1), F(000)=1632 R=0.0787, and wR=0.2273. Complex 1, with Four formula units in a cell. was characteristic of a one-dimensional polycationic chain-like structure. Photoluminescent investigation showed that the title complex displayed a strong emission in the blue region, which was attributed to the intraligand pi-pi* transition of the nicotinic ligands. Optical absorption spectrum of complex I revealed the presence of a wide optical bandgap of 4.17 eV.