Abstract
The reaction of CdCl2·2.5H2O with two equiv of aq. NaOH followed by treatment of the resulting solution with two equiv of pivalic acid gave [Cd(κ2-OC(O)tBu)2(H2O)2] (1) in 83% yield while the aforementioned reaction with Cd(OAc)2·2H2O as Cd2+ source afforded a trinuclear heterobimetallic 1D-CP, {Na2[Cd(μ5-κ3:κ3-OAc)(μ3-κ2:κ3-OC(O)tBu)(μ3-κ1:κ2-OC(O)tBu)2]·2tBuC(O)OH}∞ (2) in 90% yield. Complexes 1 and 2 were characterized by elemental analyses, IR spectroscopy, solution 1H and 13C {1H} NMR spectroscopy and solid state CP-MAS 13C{1H} NMR spectroscopy, TG-DTA analyses and single crystal X-ray diffraction. The phase purity of 2 was also verified by powder X-ray diffraction. Complex 1 represents the first structurally characterised discrete mononuclear cadmium(II) carboxylate complex which is known to contain a pair of chelating carboxylate ligand, while 2 represents the first structurally characterized trinuclear heterobimetallic 1D-CP formed through aggregation via covalent coordinate bond.
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