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Title: Copper (I) complexes of 2-thiouracil
Authors: Taşcıoğlu, Sülin
Issue Date: Jan-2007
Publisher: CSIR
IPC Code: Int. Cl.⁸ C07F1/08
Abstract: Copper complexes obtained from the reactions between 2-thiouracil and cupric hydroxide in different solvents have been investigated. Mononuclear or polynuclear complexes of Cu(I) have been obtained depending on the reaction conditions. Hydroxo complexes of copper(I) have been obtained at pH around 3.5. 2-Thiouracil acts as mono- or bidentate ligand in complexes. [Cu(H₂TU)₂OH], [Cu₅(H₂TU)₆(OH)₅] and [Cu₃(H₂TU)₄-(HTU)(OH)₂] have been obtained from the aqueous ethanolic, aqueous and dioxan solutions, respectively. Oligomeric structures of polynuclear complexes are suggested to be via the bridging of copper atoms through electron donating atoms of bidentate thiouracil. The complex, [Cu₃(H₂TU)₄(HTU)(OH)₂], reacts with concentrated HCl to give [Cu₃(H₂TU)₄Cl₃], in which its trinuclear structure is preserved. The properties and structure of [Cu₃(H₂TU)₄Cl₃] are different from those of [Cu(H₂TU)₂Cl], which is synthesized from cuprous chloride. Spectral, thermal, magnetic studies and elemental analyses for the complexes have been carried out.
Page(s): 80-85
ISSN: 0376-4710
Appears in Collections:IJC-A Vol.46A(01) [January 2007]

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