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Effect of benzoic acid substituents and additional functional groups of ancillary ligands in modulating the nuclearity and aggregation behavior of transition metal carboxylates. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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2
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Studies on the relation between the size and dispersion of metallic silver nanoparticles and morphologies of initial silver(I) coordination polymer precursor. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zinc complexes of flufenamic acid: Characterization and biological evaluation. J Inorg Biochem 2016; 163:332-345. [PMID: 27155725 DOI: 10.1016/j.jinorgbio.2016.04.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 04/12/2016] [Accepted: 04/18/2016] [Indexed: 12/19/2022]
Abstract
The reaction of ZnCl2 with the non-steroidal anti-inflammatory drug flufenamic acid (Hfluf) led to the formation of complex [Zn(fluf-O)2(MeOH)4], 1. When the reaction takes places in the presence of a N,N'-donor heterocyclic ligand such as 2.2'-bipyridylamine (bipyam), 2.2'-bipyridine (bipy), 1.10-phenanthroline (phen) and 2.2'-dipyridylketone oxime (Hpko), the complexes [Zn(fluf)2(bipyam)], 2, [Zn(fluf)2(bipy)], 3, [Zn(fluf)(phen)2(H2O)](fluf)·0.2MeOH, 4·0.2MeOH and [Zn(fluf)2(Hpko)2], 5 were isolated, respectively. The complexes were characterized by physicochemical and spectroscopic techniques and the crystal structures of complexes 2 and 4 were determined by X-ray crystallography. The ability of the complexes to scavenge 1.1-diphenyl-picrylhydrazyl, 2.2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) and hydroxyl radicals and to inhibit soybean lipoxygenase was evaluated; the complexes were more active than free Hfluf. The interaction of the complexes with serum albumins was investigated by fluorescence emission spectroscopy and the corresponding binding constants were calculated. UV-vis spectroscopy, viscosity measurements and fluorescence emission spectroscopy for the competitive studies of the complexes with ethidium bromide were the techniques employed to monitor the interaction of the complexes with calf-thymus DNA and revealed intercalation as the most possible mode of binding.
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Polymeric and cyclic manganese phosphates and phosphinates: Synthesis, spectral characterization and solid-state structures. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.01.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Antioxidant activity and interaction with DNA and albumins of zinc–tolfenamato complexes. Crystal structure of [Zn(tolfenamato)2(2,2′-dipyridylketoneoxime)2]. Eur J Med Chem 2014; 74:187-98. [DOI: 10.1016/j.ejmech.2013.12.019] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/20/2013] [Accepted: 12/21/2013] [Indexed: 01/10/2023]
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6
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Auxiliary ligand-aided tuning of aggregation of transition metal benzoates: isolation of four different types of coordination polymers. CrystEngComm 2014. [DOI: 10.1039/c4ce01043d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The position of benzoic acid substituents and the ability of the auxiliary ligand to act as a chelating or a bridging ligand drive metal benzoates to assemble either as discrete or as polymeric complexes.
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Antioxidant capacity and DNA-interaction studies of zinc complexes with a non-steroidal anti-inflammatory drug, mefenamic acid. J Inorg Biochem 2013; 128:85-96. [PMID: 23948577 DOI: 10.1016/j.jinorgbio.2013.07.013] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 07/01/2013] [Accepted: 07/08/2013] [Indexed: 12/31/2022]
Abstract
Zinc(II) complexes of a non-steroidal anti-inflammatory drug, mefenamic acid(=Hmef) in the absence or presence of the nitrogen donor heterocyclic ligands 2,2'-bipyridine(=bipy), 2,2'-bipyridylamine(=bipyam), 2,2'-dipyridylketone oxime(=Hpko) or 1,10-phenanthroline(=phen) have been synthesized and characterized. The crystal structures of [Zn(mef-O,O')2(bipy)], 2, [Zn(mef-O)2(Hpko-N,N')2]·EtOH, 4 and [Zn(mef-O)(mef-O,O')(phen)(H2O)], 5, have been determined by X-ray crystallography showing distinct binding modes of mefenamato carboxylato group, bidentate in 2, monodentate in 4 or both in 5. Interaction studies of the complexes with calf-thymus DNA (CT DNA) have shown that complexes can bind to CT DNA with [Zn(mef-O)2(Hpko)2] exhibiting the highest binding constant to CT DNA (Kb = 1.93(±0.04) × 10(7) M(-1)). The complexes can bind to CT DNA via intercalation as concluded by DNA solution viscosity measurements. Competitive studies with ethidium bromide (EB) have shown that the complexes can displace the DNA-bound EB. The complexes exhibit good binding affinity to serum albumin proteins with [Zn(mef-O)2(H2O)4], 1 exhibiting the highest quenching ability (kq = 1.46 × 10(15) M(-1) s(-1) for human and 5.55 × 10(15) M(-1) s(-1) for bovine serum albumin). All compounds have been tested for their antioxidant and free radical scavenging activity as well as for their in vitro inhibitory activity against soybean lipoxygenase. The scavenging activity is low to moderate against 1,1-diphenyl-picrylhydrazyl (DPPH) radicals and high against hydroxyl and 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS(+·)) radicals, with [Zn(mef-O)2(H2O)4], 1 (ABTS%, 0.1 mM: 94.75(±1.06)%; (·)OH%, 0.1mM: 96.69(±0.27)%; LOX: IC50 = 27.34(±0.90) μM) exhibiting the highest scavenging activity of the ABTS radical cation among the complexes. Additionally, the complexes exhibit higher scavenging and LOX inhibitory activity than free mefenamic acid (ABTS%, 0.1 mM: 66.32(±0.38)%; (·)OH%, 0.1 mM: 92.51(±0.44)%; LOX: IC50 = 48.52(±0.88) μM).
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Non-covalently aggregated zinc and cadmium complexes derived from substituted aromatic carboxylic acids: Synthesis, spectroscopy, and structural studies. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.04.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Structural features of mono- and tri-nuclear Zn(II) complexes with a non-steroidal anti-inflammatory drug as ligand. Dalton Trans 2012; 41:7082-91. [PMID: 22555959 DOI: 10.1039/c2dt30547j] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The interaction of Zn(II) with the non-steroidal anti-inflammatory drug tolfenamic acid leads to the formation of the structurally characterized trinuclear [Zn(3)(tolfenamato)(6)(CH(3)OH)(2)] complex. In the presence of the N,N'-donor heterocyclic ligands 1,10-phenanthroline and 2,2'-bipyridine at a range of ratios, the mononuclear Zn complexes of the general formulae [Zn(tolfenamato)(N,N'-donor)Cl] and [Zn(tolfenamato)(2)(N,N'-donor)] have been isolated and structurally characterized by X-ray crystallography. The deprotonated tolfenamato ligands are coordinated to the Zn(II) ion through carboxylato oxygen atoms. Tolfenamic acid and its complexes exhibit good binding propensity to human or bovine serum albumin protein having relatively high binding constant values.
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Syntheses and characterization of new MnII and FeII complexes with 4′-(4-pyridyl)-2,2′ : 6′,2″-terpyridine (pyterpy), [Mn(pyterpy)(MeOH)2(OAc)](ClO4) and [Fe(pyterpy)2](SCN)2 · MeOH. J COORD CHEM 2010. [DOI: 10.1080/00958970902866546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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New Challenge for Classics: Neutral Zinc Complexes Stabilised by 2,2’-Bipyridine and 1,10-Phenanthroline and Their Application in the Ring-Opening Polymerisation of Lactide. SUSTAINABILITY 2009. [DOI: 10.3390/su1041226] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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13
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Thermal, fluorescence, solution and structural studies of one-dimensional AgI coordination polymer with Ag–Ag and Ag–π interactions. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2008.03.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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A new ZnII two-dimensional coordination polymer, {[Zn(μ-4,4′-bipy)(1,4-ndc)(H2O)2] · (H2O)} n (4,4′-bipy= 4,4′-bipyridine and 1,4-ndc=1,4-naphthalenedicarboxylate). J COORD CHEM 2008. [DOI: 10.1080/00958970802112777] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Spectroscopic, thermal, fluorescence and structural studies of new TlI pyridine dicarboxylate complexes, [Tl2(py-2,5-dc)] and [Tl2(py-3,5-dc)]. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.07.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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New mixed-anion mercury(II) complex, spectroscopic, thermal and structural studies of [Hg(bipy)2(CH3COO)]2(SO4)·0.5NaCl. J COORD CHEM 2007. [DOI: 10.1080/00958970701252997] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Thermal and structural studies of two new TlI three-dimensional coordination polymers, [Tl2(μ-CSB)] n and [Tl2(μ-ADC)] n , CSB2− =4-[(4-carboxyphenyl)sulfonyl]-1-benzenecarboxylate and ADC2− =acetylendicarboxylate. J COORD CHEM 2007. [DOI: 10.1080/00958970701209872] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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4′-(4-Pyridyl)-2,2′:6′,2″-terpyridine as ligand in the lead(II) complexes, [Pb(pyterpy)(MeOH)I2]·MeOH and [Pb(pyterpy)(μ-AcO)]2(ClO4)2. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2007.04.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Syntheses and characterization of mixed-anion cadmium(II) complexes, structural characterization of [Cd(phen)2(NO2)1.65(NO3)0.35], as a new eight-coordinate Cd(II) complex. J COORD CHEM 2007. [DOI: 10.1080/00958970500156969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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New mixed-anion zinc(II) complexes, [Zn(phen)2(CCl3COO)(H2O)](NO3) and [Zn(bpy)2(CH3COO)](ClO4) · H2O; synthesis, characterization and crystal structures. J COORD CHEM 2007. [DOI: 10.1080/00958970500395898] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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ZnII and HgII complexes of 2,2′-diamino-4,4′-bis(1,3-thiazole) (DABTZ), spectroscopic, thermal and structural studies. J COORD CHEM 2007. [DOI: 10.1080/00958970600737973] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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23
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New mixed-anion 2-aminomethylpyridine (AMP) lead(II) complexes, Pb(AMP) n (ClO4)X, (X=CH3COO− and n=1 or X= and n=2); crystal and molecular structure of [Pb(AMP)2](ClO4)(NO3). J COORD CHEM 2007. [DOI: 10.1080/00958970500130576] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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A first 1,2,4-triazole PbII Complex: Thermal, spectroscopic and structural studies, [Pb2(trz)2(CH3COO)(NO2)]n. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.08.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Lead(II) complexes of 2,2′-diamino-4,4′-bithiazole (DABTZ) including crystal structure of a novel 1D chain polymer, [PB(DABTZ)(μ-SCN)(μ-NO3)] n. J COORD CHEM 2006. [DOI: 10.1080/00958970500262205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Unusual bridging modes for percholorate in a 2D polymeric lead(II) complex, {[Pb(bpy)(µ-OAc)]2(µ-O2ClO2)(µ-OClO2O)}n. J COORD CHEM 2006. [DOI: 10.1080/00958970500236514] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Syntheses and characterization of some new mixed-ligand lead(II) complexes, Pb(en)(CH3COO)X (X = NCS−, or ); Crystal Structure of [Pb(en)(CH3COO)(NO3)] n (en = ethane-1,2-diamine). J COORD CHEM 2006. [DOI: 10.1080/00958970412331312642] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Potassium(I)thallium(I) heterometallic 3D polymeric mixed-anions compound, succinate–nitrate [K2Tl(μ-C4H4O4)(μ-NO3)]n. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2006.03.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Two-Dimensional Holo- and Hemidirected Lead(II) Coordination Polymers: Synthetic, Spectroscopic, Thermal, and Structural Studies of [Pb(μ-SCN)2(μ-ebp)1.5]n and {[Pb(μ-OAc)(μ-ebp)](ClO4)}n (ebp=4,4′-[(1E)-Ethane-1,2-diyl]bis[pyridine]; OAc=Acetato). Helv Chim Acta 2005. [DOI: 10.1002/hlca.200590187] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Syntheses and characterization of Pb(trz) n X 2 (X = CH 3COO −, NCS −, and n = 1, 2) complexes, and crystal structure of [Pb(trz) 2(MeOH)](ClO 4) 2·H 2O. J COORD CHEM 2005. [DOI: 10.1080/00958970500078528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Crystallographic report: {[Zn(O2CC6H4NO2-m)(1,10-phenanthroline)2] O2CC6H4NO2-m}·2H2O·HO2CC6H4NO2-m. Appl Organomet Chem 2005. [DOI: 10.1002/aoc.881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Stereoselective coordination chemistry of the tetradentate chelating ligand (2R,3R)-bis(2,2′-dipyridyl-5-methoxyl)butane. Dalton Trans 2003. [DOI: 10.1039/b303803c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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A metal-assisted conversion of CO2 and imidazole to carboxylate: synthesis and structural characterisation of the zinc carboxylate {bis(1-methyl-2-imidazolecarboxylato)(1-methylimidazole)}zinc(II), [Zn(1-Me-2-Imc)2(1-MeIm)]. INORG CHEM COMMUN 1998. [DOI: 10.1016/s1387-7003(98)00003-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Perturbation of out-of-plane hydrogen bonding on carboxylato geometry. Structure of [Zn(bpy)2(MeCO2)](ClO4)·H2O. Polyhedron 1994. [DOI: 10.1016/s0277-5387(00)83115-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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