SINTEZA, STRUCTURA ŞI PROPRIETĂŢILE COMPUŞILOR COORDINATIVI AI FIERULUI CU 4-FENILTIOSEMICARBAZONA ŞI 4-FENIL-S-METILTIOSEMICARBAZONA 2-ACETILPIRIDINEI

Tatiana PALAMARCIUC, Angela SÎRBU, Oleg PALAMARCIUC

Abstract


În acest articol este realizată sinteza compuşilor Fe(III) cu 4-feniltiosemicarbazona şi 4-fenil-S-metiltiosemicar­bazo­na 2-acetilpiridinei, fiind propus studiul cristalografic şi magnetic al acestor compuşi cât şi studiul spectrofotometric în soluţie pentru ionii Fe(II) cu aceiaşi liganzi. Compuşii coordinativi [Fe(L1)2]BF4·CH3OH (1) şi [Fe(L2)2]FeCl4 (2) au fost obţinuţi în soluţii alcoolice. Analiza cu raze X relevă faptul că metilarea atomului de sulf influenţează asupra modului de coordinare a liganzilor la ionul de Fe(III). Compuşii 1 şi 2 mani­festă proprietăţi magnetice diferite.

SYNTHESIS, STRUCTURE AND PROPERTIES OF IRON COORDINATION COMPOUNDS WITH 2-ACETYLPYRIDINE 4-PHENYLTHIOSEMICARBAZONE AND DERIVATIVES

The synthesis, crystallographic and magnetic studies of Fe(III) compounds with 4-phenylthiosemicarbazone and 4-phe­nylthiosemicarbazone 2-acetylpyridine are presented. The spectrophotometric studies in solution were realized for Fe(II) ions with the same ligands. The coordination compounds [Fe(L1)2]BF4·CH3OH (1) and [Fe(L2)2]FeCl4 (2) were obtained from alcoholic solutions. Crystallographic studies reveal that the methylation of sulfur atom influence the coordination set on the Fe(III) ion. Compounds 1 and 2 shows different magnetic properties in function of temperature.


Keywords


coordination compound, iron, magnetic properties.

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References


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