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Based on chiral, enantiomerically pure 7‐[(S)‐phenylethylurea]‐8‐hydroxyquinoline (1‐H), trinuclear helicate‐type complexes 2–5 are formed with divalent transition‐metal cations. X‐ray structural analyses reveal the connection of two monomeric complex units [M(1)3]− (M=Zn, Mn, Co, Ni) by a central metal ion to form a “dimer”. Due to the enantiopurity of the ligand, the complexes are obtained as pure...
Coordination of cis,trans-1,3,5-triaminocyclohexane (tach) to copper(II) at pH 11 in the presence of chloride ions results in the formation of a μ 2 -chloro-linked dimer of Cu(tach) 2 units, which was characterized by single-crystal X-ray analysis, UV/Vis and IR spectroscopy, elemental analysis and magnetic measurements. Within the Cu(tach) 2 halves, the structurally rigid,...
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