Three novel metal-cluster based coordination polymers (MCCPs)

Novel chiral cobalt complexes containing aP NNP-type ligand were synthesized using as traightforward method. The structureso ft he cobalt complexes have been fully characterizedb yX -ray crystallography, high resolution mass spectrometry (HRMS), and electron paramagnetic resonance (EPR). Using H 2 as the hydrogen source, the cobalt-catalyzed asymmetric hydrogenation of various ketones was investigated, and the corresponding chiral alcohols were afforded with up to 99 %y ield and 95 % ee.T ot he best of our knowledge, this is the first example of ac obalt-catalyzed enantioselective hydrogenation of ketones with molecular hydrogen.Scheme1.Synthesis of novel chiral cobalt complexes.

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Source of materialΚΙη[ΒΡ20β(0Η)] was synthesized under mild hydrothermal conditions. The reactions were carried out with mixtures of In metal (0.057 g) dissolved in 1 ml of HCl (18%), H3BO3 (0.062 g) and K2HPO4 (0.522 g) (molar ratio of In:P:B = 1:2:3) in aqueous solution. The mixtures were sealed in glass tubes (after adding 1 ml H2O to achieve a degree of filling of 30%) with subsequent heating at 418 Κ for 14 days. The starting materials were all of analytical purity grade. Discussion

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