title: Non-interpenetrated square-grid coordination polymers synthesized using an extremely long N,N'-type ligand.
abstract: Four new, non-interpenetrated square-grid coordination polymers, namely [Mn(L)2(NO3)2]infinity (1), [[Cd(L)2(NO3)2].solvate]infinity (2), [Cd(L)2(NO3)2]infinity (3), and [[Zn(L)2](BF4)2.(C6H6)2.564.(DMF)1.576.(MeOH, H2O)3.454]infinity (4), were synthesized using the new, extremely long N,N'-type ligand: 2,5-bis(4'-(imidazol-1-yl)benzyl)-3,4-diaza-2,4-hexadiene (L). The reaction of Cd(NO3)2 with L leads to two novel structures sharing the same framework composition, [Cd(L)2(NO3)2]infinity, which have different arrangements of L around the metal centers. Both the channel-containing structure and the nonporous structure can be formed by choice of the appropriate solvent system. Moreover, the less stable, channel-containing form readily converts into the more stable, condensed structure upon removal of the guest molecules from the channels.
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
authors.forename: Chun-Long
authors.initials: CL
authors.lastname: Chen
authors.forename: Andrea M
authors.initials: AM
authors.lastname: Goforth
authors.forename: Mark D
authors.initials: MD
authors.lastname: Smith
authors.forename: Cheng-Yong
authors.initials: CY
authors.lastname: Su
authors.forename: Hans-Conrad
authors.initials: HC
authors.lastname: zur Loye