Cobalt(II) and cadmium(II) compounds with adamantane-1-sulfonic acid

Abstract

In this work, the syntheses and characterization of two novel compounds of adamantane-1-sulfonic acid (1-AdSO(3)H) with cobalt(II) and cadmium(II) are reported. The results of single crystal X-ray analysis of the compounds revealed that adamantane-1-sulfonate (1-AdSO(3)(-)) in the monoanionic form plays different roles in the investigated compounds. Namely, while in compound [Co(H2O)(6)](1-AdSO(3))(2), six water molecules are coordinated to the cobalt(II) ion and 1-AdSO(3)(-) serves as a counter ion, in compound [Cd(H2O)(4)(1-AdSO(3))(2)], two molecules of 1-AdSO(3)(-) are trans-coordinated to the cadmium(II) ion as a monodentate (O)-ligand and the other coordination sites are occupied by water molecules. The obtained compounds showed moderate activity against Artemia salina.

U ovom radu prikazana je sinteza i karakterizacija dva nova jedinjenja adamantan-1-sulfonske kiseline (1-AdSO3H) sa kobaltom(II) i kadmijumom(II). Rezultati rend- genske strukturne analize datih jedinjenja ukazuju da monoanjon adamantan-1-sulfonata (1-AdSO3 pokazuje različit afinitet prema Co(II) i Cd(II) jonima). U kompleksu [Co(H2O)6](1-AdSO3)2, šest molekula vode se koordinuje za Co(II) jon, dok 1-AdSO3 ima ulogu kontrajona. U kompleksu [Cd(H2O)4(1-AdSO3)2] dva jona 1-AdSO3 su koordinovana za Cd(II) jon kao monodentati u trans položaju preko kiseonikovih atoma, dok su ostala koordinaciona mesta zauzeta molekulima vode. Dobijena jedinjenja su pokazala umerenu aktivnost na Artemia salina.