Abstract
Adducts of 2′-deoxyadenosine (dado) with chlorides of dipositive 3d metal ions (M=Mn, Fe, Co, Ni, Cu and Zn) were prepared by boiling, under reflux, mixtures of ligand and the metal salt in HC(OEt)3·EtOH. The solid complexes isolated are either 2∶1 or 1∶1 adducts of dado and metal chloride,i.e.: M(dado)2Cl2 (M=Co or Cu), M(dado)2Cl2·2H2O (M=Mn or Zn), Fe(dado)Cl2 and Ni(dado)Cl2·2H2O. The 2∶1 adducts are monomeric distorted tetrahedral (M=Co or Cu) or hexacoordinated (M=Mn or Zn). The 1∶1 complexes are apparently single-bridged linear polymeric species, involving a [M-(dado)]x backbone (M=Fe or Ni), two terminal Cl- and for M=Ni, two aqua ligands. Terminal dado is most probably N(7)-bound, while bidentate bridging dado bindsvia N(1), N(7).
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