Synthesis of the new fulleride HgxC60 Was achieved inside an evacuated ampoule filled with metallic Hg and C-60 powder kept at 500 degrees C for several months. A heat capacity anomaly is observed at 232.3 K, reminiscent of the ordering transition of pristine C-60 but With reduced transition enthalpy. Weakly shifted F-1u infrared bands suggest lack of Hg-C-60 charge transfer. The structure at 300 K is as in pristine C-60 but with a measurable lattice expansion consistent with Hg intercalation in octahedral sites. This lattice expansion induces downshift of the ordering transition and weak displacement of infrared bands. (C) 2000 Elsevier Science B.V. All rights reserved.
Synthesis, infrared spectra and thermal studies of Zn(II), Cd(II) and Hg(II) complexes with 2-aminobenzaldehyde phenylhydrazone “nitrin” ligand
作者:Moamen S. Refat、Asmaa A. Ibrahim
DOI:10.1016/j.saa.2007.05.065
日期:2008.6
2-aminobenzaldehyde phenylhydrazone (2ABPH) was synthesis by refluxing 2-nitrobenzaldehyde with phenylhydrazine in ethanolic solvent. Three transition metal (II) complexes of 2ABPH have been prepared. Elemental analysis, molar conductivity, IR, UV, 1H NMR, and mass spectra, as well as TG/DTG have been used to characterize these complexes. The complexes have the general formula [M(2ABPH)2]Cl2.nH2O, where