Synthesis, crystal structure, and thermal properties of {[Cd2(L1)3(sac)4]•2CH2Cl2}∞:: A coordination polymer with non-interpenetrating ladders containing cadmium in a rare, trigonal bipyramidal coordination environment (L1=1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene, sac = saccharinate)

The new coordination polymer, {[Cd-2( L1)(3)( sac)(4)] center dot 2CH(2)Cl(2)}(infinity), has been prepared from the reaction of 1,4- bis(4-pyridyl)- 2,3-diaza-1,3-butadiene (L1) with [Cd( sac)(2)(H2O)(4)] center dot 2H(2)O ( sac = saccharinate) in a methylene chloride/ethanol solvent mixture. The compound features a non-interpenetrating ladder motif constructed from Cd(L1)(3) T-shaped units. The Cd atoms are coordinated to three nitrogen donor atoms from three L1 ligands and two nitrogen donor atoms from two saccharinate ligands in a rare, trigonal bipyramidal coordination environment. The compound was further characterized by IR spectroscopy and DTA/TGA. {[Cd-2( L1)(3)( sac)(4)] center dot 2CH(2)Cl(2)}(infinity) crystallizes in the triclinic space group P-1 with a = 10.8747( 19) angstrom, b = 12.626( 2) angstrom, c = 15.749( 3) angstrom, a = 111.839( 3)degrees, beta = 97.442( 3)degrees, and gamma = 106.239( 3)degrees.