Indexed on: 27 Feb '18Published on: 22 Feb '18Published in: Zeitschrift für anorganische und allgemeine Chemie
Two cadmium(II) and two zinc(II) coordination complexes with diverse structural motifs, [Cd2(HL)I3H2O]·H2O (1), [Cd2(H2L)2(H2O)4]·2SO4·14H2O (2), [Zn3(L′)2(H2O)6]·4H2O·2(NO3) (3), and [Zn3L'2(H2O)2Cl2]·H2O (4) [H2L = 1,1-bis(5-(pyrid-2-yl)-1,2,4-triazol-3-yl)methane; H2L′ = 1,1-bis(5-(pyrid-2-yl)-1,2,4-triazol-3-yl)methanone] were synthesized through a hydrothermal method. These coordination complexes were characterized by single-crystal X-ray diffraction, powder X-ray diffraction (PXRD), FT-IR spectroscopy, and photo-luminescent experiments. Single crystal structural analysis revealed that 1–4 belong to polynuclear coordination compounds. PXRD analysis of 1–4 unambiguously confirmed the purity of the as-synthesized coordination compounds. It is the first time to synthesize coordination compounds based on H2L′, which reacted from the original material H2L through in-situ hydrothermal conditions. In addition, photo-luminescent experiments revealed that 1–4 have real-time sensing effects for benzaldehyde through fluorescence quenching. For 1–4, the photo-luminescent quenching effect for benzaldehyde was also compared and the coordination complexes 3 and 4 based on H2L′ have higher photo-luminescent quenching effect than compounds 1 and 2.