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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3536

Title: THERMAL-ANALYSIS OF SOME COMPLEXES WITH MALONAMIDE
Authors: DEBEUKELEER, SHJ
DESSEYN, HO
PERLEPES, SP
MULLENS, Jules
Issue Date: 1995
Publisher: ELSEVIER SCIENCE BV
Citation: THERMOCHIMICA ACTA, 257(1-2). p. 149-161
Abstract: In alkaline medium, malonamide forms anionic planar complexes [ML(2)](2-). xH(2)O where M is Ni or Cu. Thermograms and vibrational spectra clearly indicate that three different nickel anion complexes could be isolated, with x being respectively 2, 1 and 0. Only the monohydrate has been observed for the copper anionic compound. Malonamide also forms neutral trans-octahedral M(LK(2))(2)X(2) complexes (where M is Mn, Fe, Co, Ni, Cu, Zn;X is Cl, Br, I;LH(2) is CH2(CONH2)(2)) and polymeric [Cu(LH(2))X(2)](n) compounds (X is Cl or Br), The neutral 1/2 complexes all decompose, forming free ligand and MX, by an endothermic reaction, except for Fe(II) where an exothermic reaction occurs at relatively low temperatures. The thermal breakdown of Cu(LH(2))(2)Cl-2 and [Cu(LH(2))Cl-2](n) results in new polymeric structures, exhibiting bridging chlorines. The structures proposed for these compounds are supported by infrared spectra. The thermal stability of the M(LH,),X, complexes can be related to the metal-ligand bond strength and obeys the crystal field stabilization theory.
Notes: ANTWERP STATE UNIV CTR,DEPT CHEM,B-2020 ANTWERP,BELGIUM. UNIV PATRAS,DEPT CHEM,GR-26010 PATRAI,GREECE. LIMBURGS UNIV CENTRUM,DEPT SBG,B-3590 DIEPENBEEK,BELGIUM.
URI: http://hdl.handle.net/1942/3536
DOI: 10.1016/0040-6031(94)02199-X
ISI #: A1995RF40700016
ISSN: 0040-6031
Type: Journal Contribution
Appears in Collections: Research publications

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