Abstract
AbstractComplexes of the type [MCl2(7‐nitro‐1,3,5‐triaza‐adamantane)2] (M = Zn(II), Pd(II), Pt(II)) and [MCl2(H2O)2(7‐nitro‐1,3,5‐triazaadamantane)2] (M = Mn (II), Co(II), Ni(II)) have been prepared and their structures have been analysed by X‐ray crystallography, elemental analysis, IR and solid state 13C and 15N NMR spectroscopy, supported by density functional theory/gauge independent atomic orbital (DFT/GIAO) calculations. In each case, 7‐nitro‐1,3,5‐triazaadamantane acts as a mono‐dentate ligand and binds to one metal centre only, in spite of the presence of three equivalent amino nitrogens. In the Co(II) and Ni(II) complexes, a two‐dimensional intermolecular hydrogen bonding network between the aqua‐ and the chloro ligands is established. The uncoordinated amines of the 7‐nitro‐1,3,5‐triaza‐adamantane are not involved in any H‐bonding, as a result of the exceptionally low basicity of this compound.
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