COORDINATION-COMPOUNDS OF MANGANESE(II) WITH 1,10 PHENANTHROLINE .3. THERMAL STUDIES OF PSEUDOHALOGENATO COMPLEXES

TG and DTA of the compounds Mn(phen)2X2 (where X=CN-,CNO-, NCS- and NCSe-), Mn(phen) (NCS)2, Mn(NCS)2 and Mn(NCSe)2 (where phen=1,10 phenanthroline) are reported and discussed. Decomposition schemes are proposed based on TG and DTA results and, where possible, the analysis and properties of intermediates formed during thermal breakdown. The decomposition of thiocyanate and selenocyanate ligands is observed to lead to an apparent slight increase in sample weight. This phenomenon is discussed in relation to buoyancy changes resulting from the release of sulphur or selenium vapours. © 1979 Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest.