Thermal
decomposition of some linear trinuclear schiff base complexes with acetate
bridges |
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Authors: | S Durmuş Ü Ergun J C Jaud K C Emregül H Fuess O Atakol |
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Institution: | 1. Faculty of Education, Abant ?zzet Baysal University, Bolu, Turkey 2. Science Faculty, Chemistry Department, Ankara
University, Tando?an Ankara, Turkey, 06100 3. Structurforschung, FB Materialwissenschaft, Technische
Universit?t Darmstadt, Darmstadt, Germany
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Abstract: | Ni(II)–M(II)–Ni(II) nuclear structured
complexes were prepared from N,N’-bis(salicylidene)-1,3-propanediamine
(LH2) and its derivatives N,N’-bis(salicylidene)-2,2’-dimethyl-1,3-propanediamine
(LDMH2) and N,N’-bis(salicylidene)-2-hydroxy-1,3-propanediamine
(LOH3), where M represents one of the following
metal ions; Mn(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II). Two different
μ-bridges are found between the metal nucleus of the complexes. The
phenolic oxygens and acetate ions tend to form μ-bridges between the
terminal Ni(II) ions and central metal(II) ion. The coordinatively bonded
DMF molecules, in the complexes, were observed to abandon the structure between
160–180°C. Further heating resulted primarily in the thermal decomposition
of the complexes above 310°C, whereas metal oxide residue mixtures were
observed above 650°C. |
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Keywords: | DSC TG-DTA trinuclear Schiff base complex |
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