Thermal, spectroscopic and structural studies of dimeric and Polymeric mixed-ligands cadmium (II) complexes, [Cd(phen)(2)(bpe)(H(2)O)](ClO(4))(2). H2O and [Cd(bpp)(2)(H(2)O)2](ClO(4))(2). bpe. H(2)O

Two new mixed-ligands CdII complexes of trans-1,2-bis(4-pyridyl)ethene (bpe) with 1,3-di(4-pyridyl)propane (bpp) and 1,10-phenanthroline (phen),Cd(phen)(2)(bpe)(H(2)O)](ClO(4))(2). H(2)O (1) and [Cd(bpp)(2)(H(2)O)(2)](ClO(4))(2). bpe. H(2)O (2) havebeen synthesized and characterized by elemental analysis, IR,(1)H NMR and (13)C NMRspectroscopy and studied by thermal as well as X-ray crystallography. The structural study of 1 show the compound is monomeric with coordination environments ofdistorted octahedral CdN5O and mononuclear Units further liked into a hydrogenbondeddimmer via intermolecular N…O interactions. The single crystal X-ray analysis of 2 Shows that the complex is a one-dimensional polymer as a result ofbridging two 1, 3-di (4-pyridyl) propane (bpp) ligands. The one-dimensional Chains are further self-assembled into a three-dimensional network with channels by mixedbridges of free bpe molecules and Hydrogen-bonded 8-membered rings based on free water molecules and ClO4 _ anions.