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Synthesis and Characterization of caffeine Complexes [M (caf) 4X2] M = Ni(II), Cu(II), Zn(II), Cd(II) X = SCN-, CN-; caf : caffeine

Author Affiliations

  • 1 Equipe Métallation, complexes moléculaires et applications, Université Moulay Ismail, faculté des sciences, Meknès, BP 11201 Zitoune, 50000 MOROCCO

Res.J.chem.sci., Volume 4, Issue (2), Pages 42-48, February,18 (2014)


A series of complexes [M(caf)4X2] where X = cyano,thiocyanato , caf=caffeine ,and M = Ni (II), Cu (II), Zn (II) and Cd (II) were prepared. The prepared complexes were characterized by elemental analysis, conductance measurement, UV-Visible and FT-IR spectral analysis. The conductivity measurements reveal that the complexes are nonelectrolyte. The elemental analysis showed the formation of 1,4,2 (metal, caffeine, cyano or thiocyanato) complexes. The infrared and UV-visible data indicating a monodentate coordination of the four caffeine by N9 nitrogen atom and two cyano or thiocyanato in trans and cis octahedral geometry.


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