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Syntheses and Characterizations of Two Novel Silver Polymers from Assembly 5‐Bromosalicylic Acid and 2‐Aminobenzoic Acid, with High Inhibitory Activities against Jack Bean Urease
Author(s) -
Cheng Kui,
Zhu HaiLiang,
Li YuGuang
Publication year - 2006
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200600162
Subject(s) - carboxylate , crystallography , hydrogen bond , monoclinic crystal system , orthorhombic crystal system , chemistry , stacking , supramolecular chemistry , crystal structure , ligand (biochemistry) , stereochemistry , molecule , organic chemistry , biochemistry , receptor
Two novel two‐dimensional silver(I) polymers, [Ag(5‐bsa)] n ( 1 ) and [Ag(2‐aba)]n ( 2) (5‐bsaH = 5‐bromosalicylic acid and 2‐abaH = 2‐aminobenzoic acid), have been synthesized from the reaction of Ag 2 O and carboxylate ligands in ammonia solution and structurally determined by single‐crystal X‐ray diffraction analyses. 1 crystallizes in the monoclinic space group P2 1 / c with a = 7.316(2), b = 8.171(2), c = 13.051(3) Å, U = 777.0(3) Å 3 , β = 95.14(3) and Z = 4. 2 crystallizes in the orthorhombic space group Pna2 1 with a = 5.9486(8), b = 24.227(3), c = 4.9042(6) Å, U = 706.8(2) Å 3 , and Z = 4. In 1 , 5‐bsa serves as tridentate ligands coordinating to three Ag + ions through its hydroxyl and bridging ligand carboxyl groups, with the Ag‐Ag bonding and two carboxylate ions defined in a slight distorted plane and further extending into a two‐dimension layer through the hydroxyl and the overlapping and off‐set stacking interactions. In 2 , adjacent Ag + ions via Ag‐Ag bonding interactions generate a one‐dimension silver chain and adjacent silver chains are further linked by μ 2 ‐N, O atoms of 2‐aba to result in a two‐dimensional configuration, with the inter‐chain hydrogen bonding interaction forming a three‐dimension supramolecular structure. Both the two silver(I) complexes have strong inhibitory activities against Jack Bean urease with the IC 50 values of 21.98 μ M for 1 and 25.34 μ M for 2 , but neglectable inhibition activity on Xanthine Oxidase.