摘要 : Reaction of FeSO4 . 7H(2)O with trans-1,2-bis(4-pyridyl)ethylene (tvp) and NaNCS in the mixed solvent of water and ethanol gave rise to the formation of different coordination polymers. One (Fe(tvp)(2)(NCS)(2)(H2O)(2)) is hydrogen... 展开 Reaction of FeSO4 . 7H(2)O with trans-1,2-bis(4-pyridyl)ethylene (tvp) and NaNCS in the mixed solvent of water and ethanol gave rise to the formation of different coordination polymers. One (Fe(tvp)(2)(NCS)(2)(H2O)(2)) is hydrogen bonded and n-n interacted structure, while the other ([Fe(tvp)(2)(NCS)(2)][0.5(tvp . 2EtOH)]) is 2D grid structure, which enclathrates tvp . 2EtOH. This enclathrated tvp . 2EtOH interacts with the two 2D grid sheets to form 3D structure. The same reaction was carried out with KNCSe instead of NaNCS (Fe(tvp)(2)(NCSe)(2)(H2O)(2)). Fe-57 Mossbauer spectra revealed that all the present assembled complexes are in the Fe-II high-spin state. The dissociation behavior of enclathrated molecule and ligand was investigated by TG, and the resultant electronic state of iron atom was studied by Fe-57 Mossbauer spectroscopy. (C) 2004 Elsevier B.V. All rights reserved. 收起