Anion-controlled assembly of Ag(I) coordination polymers based on cis/trans-bis(acetylacetone)-1,4-cyclohexanediimine ligands: syntheses, structures, and solid-state luminescence

作者：Zhang, Qilong^*; Feng, Guangwei; Zhang, Yunqian; Zhu, Bixue; Lindoy, Leonard F.; Wei, Gang

来源：Journal of Coordination Chemistry, 2016, 69(2): 253-269.

DOI：10.1080/00958972.2015.1105967

• Bis(acetylacetone)cyclohexanediimine
• silver coordination polymers
• luminescent property
• ion-controlled
• structure diversity

Two isomorphic acetylacetone-based complexes: trans-bis(acetylacetone)-1,4cyclohexanediimine (TBAC) and cis-bis(acetylacetone)-1,4-cyclohexanediimine (CBAC) were designed to promote complex formation on reaction with AgX (X=NO3-, ClO4-, BF4-, SbF6- and SO2 CF3-) and were employed to generate nine silver coordination polymers (CPs), {[Ag(TBAC)]2H(2)OBF(4)}(n) (1), [Ag(TBAC)(0.5)(NO3)](n) (2), [Ag-2(TBAC)(2)(ClO4)(2)](n) (3), [Ag(TBAC)(CF3SO3)(H2O)](n) (4), {[Ag(TBAC)(2)]SbF6}(n) (5), {[Ag(CBAC)]BF4}(n) (6), {[Ag(CBAC)(H2O)]ClO4}(n) (7), {[Ag(CBAC)(H2O)]CF3SO3}(n) (8), and {[Ag(CBAC)(H2O)]SbF6}(n) (9) that exhibit structural and topological diversity as determined by single-crystal X-ray diffraction analyses. The complexes were further characterized by elemental analyses, IR spectra, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Complex 1 exhibited a 3-D (4,4)-connected pts topology with the Schlafli symbol of (4(2)8(4)). The NO3- anions in 2 are (2)-bridging linkers, connecting the 1-D [Ag(TBAC)(0.5)](n) chains to 2-D (3,4)-connected nets. In 3, TBAC is a tridentate ligand to bind Ag(I) ions to form a 1-D ladder-like supramolecular structure. Complex 4 has 2-D (3,3)-connected nets where both Ag(I) ions and TBAC ligands are 3-connected nodes. Complex 5 has a 1-D fishbone chain structure where some of the TBAC moieties are bidentate. The cis-isomer, CBAC, gives similar (3,3)-connected networks where the Ag(I) ions and CBAC ligands are 3-connected nodes in the resultant 6-9. Although the host networks in 6-9 are supramolecular isomers, structural comparisons revealed that use of cis- and trans-isomers of the ligand and different counterions significantly influence the structures. The luminescent properties of all complexes and ligands were investigated.

• 出版日期2016
• 单位CSIRO; 贵州大学