Studies On Crystal Structure Of Coordination Complexes Of Simple Fatty Acids - Bipyridine Ligands

Nowadays the strategy to design and construct novel metal-organic architectures utilizing multifunctional building blocks upon reaction with various metal ions seems to be a marvelous success. In this presentation, five novel coordination compounds, namely, [Cu(4-bpt)(HCOO)(H₂O)]Br·2H2O (1), [Cu(4-bpt)(H₂O)](SO₄)·1.5H₂O (2), [Co(4-bpt)(mal)]·3H₂O (3), [Cu(3-bpt)(mal)]·H₂O (4), [Co(3-bpt)(H₂O)₄](NO₃)₂·H₂O (5), are prepared by reaction of formic acid, and malonic acid and N-donor co-ligands, and different metal ions. All these complexes are characterized by X-ray single-crystal diffractions.(1) The final structures of the product are determined by bpt. Complexes 1, 2, 3 are two-dimensional framework; Complexes 4 and 5 are one-dimensional motif and all the complexes further linked by hydrogen bonds to form three-dimensional supera-molecular networks. (2) In complex 1 formic acid takes the syn-anti coordination modes. In complexes 3 and 4 malonate anion takes the chelate-bridging and chelate coordination modes, respectively.