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Hydrolytic Ring Opening Reactions of Pyromellitic Dianhydride for Divalent Transition Metal Carboxylate Complexes
Author(s) -
Tao Bo,
Xia Hua,
Huang ChaoXin,
Li XiaoWei
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201000393
Subject(s) - carboxylate , pyromellitic dianhydride , chemistry , thermogravimetric analysis , hydrolysis , ring (chemistry) , transition metal , metal , octahedron , zinc , crystallography , inorganic chemistry , crystal structure , stereochemistry , organic chemistry , catalysis , polyimide , layer (electronics)
The hydrolytic ring opening reactions of pyromellitic dianhydride is an effective method to prepare transition metal carboxylate complexes. In this paper, two dinuclear complexes [Ni 2 (2,2′‐bipy) 2 (btec)(H 2 O) 6 ] · 2H 2 O ( 1 ) and [Cd 2 (phen) 4 (H 2 O) 2 (H 2 btec)] · H 2 btec · 2H 2 O ( 2 ) (H 4 btec = 1,2,4,5‐benzenetetracarboxylic acid, phen = 1,10‐phenanthroline, and 2,2′‐bipy = 2,2′‐bipyridine) were synthesized by slow diffusion methods and their structures were determined byX‐ray structure analysis. In both structures metal atoms are in distorted octahedral environments and they are linked by bis‐monodentately coordinated 1,2,4,5‐benzentetracarboxylate ligands as bridging units. The crystalline compounds, which are insoluble in water as well as common organic solvents, have been characterized in the solid‐state by elemental analysis, thermogravimetric analysis, IR, and diffuse reflectance UV/Visspectroscopy. Moreover, the study of the physical properties of complex 2 demonstrates that it exhibits blue fluorescence emission in the solid state at room temperature.