Employing Cd-O-C rod-shaped secondary building units to construct 2D metal-organic frameworks (MOFs): hydrothermal synthesis, structures, and luminescent properties

Under hydrothermal conditions, in the presence of H(2)BDC, the self-assembly of CdCl(2), H(2)ip or H(2)NDC at pH = 7 generated two Cd(II)-containing coordination polymers, Cd(6)(ip)(6)(mu-H(2)O)(4) center dot H(2)O (1) and Cd(2)(NDC)(2)(mu-H(2)O)(2) (2) (H(2)BDC/H(2)ip/H(2)NDC = 1,4/1,3/1,2-benzenedicarboxylic acid). The structures are 2D metal-organic frameworks constructed from Cd-O-C rod-shaped SBUs (Secondary Building Units). Crystal samples in the solid state display strong fluorescence at 335 and 343 nm.