Synthesis, crystal structures and photocatalytic properties of four silver(I) coordination polymers based on semirigid bis(pyrazole) and carboxylic acid co-ligands

• Published in: Transition metal chemistry (Weinheim) Vol. 41; no. 6; pp. 701 - 712
• Main Authors: Huan, Dian-Heng, Zhao, Yan-Qin, Dong, Gui-Ying, Yin, Fu-Jun, Wang, Sheng-Chun
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.09.2016
• Subjects: Catalysis; Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Organometallic Chemistry; Physical Chemistry; Methylene Blue; Terephthalic Acid; Zigzag Chain; Photocatalytic Property; Methyl Orange
• ISSN: 0340-4285; 1572-901X
• DOI: 10.1007/s11243-016-0071-2

Four Ag(I) coordination polymers, formulated as [Ag(L1)(tpa) 0.5 ] n ( 1 ), {[Ag(L2)(ndc) 0.5 ]·0.5H 2 ndc} n ( 2 ), [Ag(L3) 0.5 (ndc) 0.5 ] n ( 3 ) and {[Ag(L3)]·H 3 bptc} n ( 4 ) (L1 = 4,4′-bis(pyrazole-1-ylmethyl)-biphenyl, L2 = 4,4′-bis(3,5-dimethylpyrazol-1-ylmethyl)-biphenyl, L3 = 1,4-bis(3,5-dimethylpyrazol-1-ylmethyl)benzene, H 2 tpa = terephthalic acid, H 2 ndc = 2,6-naphthalenedicarboxylic acid, H 4 bptc = 3,3′,4,4′-biphenyltetracarboxylic acid), have been hydrothermally synthesized and structurally characterized. Complex 1 features the rare binodal (4,4)-connected 2D 4,4L10 topological network with a point symbol of {3 2 ·4.6 2 ·7} 2 {3 2 ·6 2 ·7 2 }. Complex 2 has a folded ladder-like chain structure, which is further extended into a 3D supramolecular network via O–H···O hydrogen bonding and π ··· π stacking interactions. Complexes 3 and 4 both possess 1D zigzag chain structures. Complex 3 is further extended into a binodal (3,4)-connected network with the point symbol of {4.8 4 ·10}{6 2 ·8 2 } 2 by Ag···O weak interactions, while complex 4 is further connected through O–H···O hydrogen bonding and π ··· π interactions to afford a 2D supramolecular structure. The photoluminescence spectra and photocatalytic properties of these complexes for degradation of methylene blue and methyl orange are reported.