A new copper(II) supramolecular coordination polymer and a dinuclear compound with multifunctional 2-amino-5-sulfobenzoic acid and flexible N-donor ligands: synthesis, structure and characterization

作者：Li, Peng-Cheng; Zhang, Kou-Lin^*

来源：Acta Crystallographica Section C-Structural Chemistry, 2018, 74(3): 332-+.

DOI：10.1107/S2053229618002474

• supramolecular coordination polymer
• dinuclear compound
• copper(II)
• paddlewheel structure
• synthesis
• characterization
• dehydration-rehydration behaviour
• crystal structure

Multifunctional 2-amino-5-sulfobenzoic acid (H(2)afsb) can exhibit a variety of roles during the construction of supramolecular coordination polymers. The pendant carboxylic acid, sulfonic acid and amino groups could not only play a role in directing bonding but could also have the potential to act as hydrogen-bond donors and acceptors, resulting in extended high-dimensional supramolecular networks. Two new Cu-II coordination compounds, namely catena-poly-[[[ diaquacopper(II)]-mu-1,6-bis(1H-1,2,4-triazol-1-yl) hexane-kappa(2) N-4:N-4'] bis(3-amino-4-carboxybenzenesulfonate) dihydrate], {[Cu(C10H16N6)(2)(H2O)(2)](C7H6NO5S)(2)center dot-2H(2)O}(n) or {[Cu(bth)(2)(H2O)(2)](Hafsb)(2)center dot 2H(2)O}(n), (1), and bis(mu-2-amino-5-sulfonatobenzoato-kappa O-2(1):O-1')bis{mu-1,2-bis[(1H-imidazol-1-yl) methyl]benzene-kappa N-2(3):N-3'}-bis-[aquacopper(II)]trihydrate, [Cu-2(C7H5NO5S)(2)(C14H14N4)(2)(H2O)(2)]center dot 3H(2)O or [Cu-2(afsb)(2)(obix)(2)(H2O)(2)]center dot 3H(2)O, (2), have been obtained through the assembly between H2afsb and the Cu II ion in the presence of the flexible N-donor ligands 1,6-bis(1H-1,2,4-triazol-1-yl) hexane (bth) and 1,2-bis[(1H-1,2,4-triazol-1-yl)methyl]-benzene (obix), respectively. Compound (1) consists of a cationic coordination polymeric chain and 3-amino-4-carboxybenzenesulfonate (Hafsb(-)) anions. Compound (2) exhibits an asymmetric dinuclear structure. There are hydrogen-bonded networks within the lattices of (1) and (2). Interestingly, both (1) and (2) exhibit reversible dehydration-rehydration behaviour.

• 出版日期2018-3
• 单位扬州大学