title: One-dimensional Cu(II) coordination polymers containing C2h-symmetric 1,1':4',1''-terphenyl-3,3'-dicarboxylate linkers.
abstract: Two new one-dimensional Cu(II) coordination polymers (CPs) containing the C2h-symmetric terphenyl-based dicarboxylate linker 1,1':4',1''-terphenyl-3,3'-dicarboxylate (3,3'-TPDC), namely catena-poly[[bis(dimethylamine-κN)copper(II)]-μ-1,1':4',1''-terphenyl-3,3'-dicarboxylato-κ(4)O,O':O'':O'''] monohydrate], {[Cu(C20H12O4)(C2H7N)2]·H2O}n, (I), and catena-poly[[aquabis(dimethylamine-κN)copper(II)]-μ-1,1':4',1''-terphenyl-3,3'-dicarboxylato-κ(2)O(3):O(3')] monohydrate], {[Cu(C20H12O4)(C2H7N)2(H2O)]·H2O}n, (II), were both obtained from two different methods of preparation: one reaction was performed in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) as a potential pillar ligand and the other was carried out in the absence of the DABCO pillar. Both reactions afforded crystals of different colours, i.e. violet plates for (I) and blue needles for (II), both of which were analysed by X-ray crystallography. The 3,3'-TPDC bridging ligands coordinate the Cu(II) ions in asymmetric chelating modes in (I) and in monodenate binding modes in (II), forming one-dimensional chains in each case. Both coordination polymers contain two coordinated dimethylamine ligands in mutually trans positions, and there is an additional aqua ligand in (II). The solvent water molecules are involved in hydrogen bonds between the one-dimensional coordination polymer chains, forming a two-dimensional network in (I) and a three-dimensional network in (II).
authors.affiliation: Chemistry and Protein Research Center for Bio-Industry, Hankuk University of Foreign Studies, Yongin 449-791, Republic of Korea.
authors.forename: Hyun Chul
authors.initials: HC
authors.lastname: Kim
authors.affiliation: Chemistry and Protein Research Center for Bio-Industry, Hankuk University of Foreign Studies, Yongin 449-791, Republic of Korea.
authors.forename: Ja Min
authors.initials: JM
authors.lastname: Gu
authors.affiliation: Chemistry and Protein Research Center for Bio-Industry, Hankuk University of Foreign Studies, Yongin 449-791, Republic of Korea.
authors.forename: Seong
authors.initials: S
authors.lastname: Huh
authors.affiliation: ReSEAT Program, Korea Institute of Science and Technology Information (KISTI), Seoul 130-741, Republic of Korea.
authors.forename: Chul Hyun
authors.initials: CH
authors.lastname: Yo
authors.affiliation: Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, Republic of Korea.
authors.forename: Youngmee
authors.initials: Y
authors.lastname: Kim
keywords: 1,1′:4′,1′′-terphenyl-3,3′-dicarboxylate; crystal structure; hydrogen bonding; network structures; one-dimensional copper(II) coordination polymers