“…In the title compound, (C(4)H(14)N(2))[Cu(C(7)H(3)NO(4))(2)]·3H(2)O or (bdaH(2))[Cu(pydc)(2)]·3H(2)O (where bda is butane-1,4-diamine and pydcH(2) is pyridine-2,6-dicarboxylic acid), the Cu(II) atom is coordinated by four O atoms [Cu—O = 2.0557 (16)–2.3194 (16) Å] and two N atoms [Cu—N = 1.9185 (18) and 1.9638 (18) Å] from two chelating rings of the pydc(2−) anions, which act as tridentate ligands. …”
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“…There are two types of cadmium environment: CdO(8) (through four chelating sulfite ligands) and CdO(6) (by way of six monocoordinated ligands). …”
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“…Six carboxyl­ate groups each chelate a Cr—O—Cr fragment. The cations, anions and uncoordinated water mol­ecules are linked by hydrogen bonds.…”
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“…In the title compound, each of the Zn(II) ions is coordinated by two N atoms from a chelating N,N-dimethyl­ethylenediamine ligand, two bridging Cl atoms and one terminal Cl atom. …”
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“…One of the Li(+) cations has a distorted tetra­hedral geometry, coordinated by one of the carboxyl­ate O atoms of the pyrazine-2,3-dicarboxyl­ate ligand and three O atoms from three water mol­ecules, whereas the other Li(+) cation has a distorted trigonal-bipyramidal geometry, coordinated by a carboxyl­ate O atom of a symmetry-related pyrazine-2,3-dicarboxyl­ate ligand, two water mol­ecules and a chelating pyrazine-2,3-dicarboxyl­ate ligand (by utilizing both N and O atoms) of an adjacent mol­ecule. …”
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“…The ROS inhibiting substance deferoxamine, which acts via chelation of Fe(2+), completely prevented mycolactone mediated cytotoxicity. …”
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“…The ‘symmetrical’ 1,5-bis­[1-(2-hydroxy­phen­yl)ethyl­idene]thio­carbazone Schiff base condenses with dibutyl­tin oxide to form the title complex, [Sn(C(4)H(9))(2)(C(17)H(16)N(4)O(2)S)], in which the deprotonated ligand O,N,S-chelates to the Sn atom of two crystallographically independent mol­ecules. …”
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“…On the other hand, a rapid influx of Ca(2+) through ionotropic glutamate receptors could inhibit the amplitude and kinetics of taurine-elicited currents in the third-order neurons, which could be controlled with intracellular application of BAPTA a fast Ca(2+) chelator. This study indicates that taurine is a potential neuromodulator in glutamate transmission. …”
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“…In complex A, [Zn(2)(C(8)H(7)O(2))(4)(H(2)O)(2)], each Zn cation is chelated by a 4-methyl­benzoate (PMB) anion and coordinated by a water mol­ecule, and is further bridged by two PMB anions in a trigonal-bipyramidal geometry. …”
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“…In the title compound, [Zn(C(7)H(4)BrO(2))(C(12)H(8)N(2))(2)(H(2)O)](C(7)H(4)BrO(2))·1.5H(2)O, the Zn(II) atom is coordinated by four N atoms from two chelating 1,10-phenanthroline (phen) ligands, one O atom from a 4-bromo­benzoate ligand and one water mol­ecule, completing a distorted ZnN(4)O(2) octa­hedral geometry. …”
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“…In the title compound, [La(C(7)H(5)O(4))(3)(C(12)H(8)N(2))(3)(H(2)O)(2)]·C(12)H(8)N(2), the La(III) atom is coordinated by four N atoms from two chelating 1,10-phenanthroline (phen) ligands, four O atoms from three 2,6-dihy­droxy­benzoate (DHB) anions (one monodentate, the other bidentate) and two water O atoms, completing a distorted LaN(4)O(6) bicapped square-anti­prismatic geometry. …”
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“…The two complex mol­ecules have similar configurations with the hexa­coordinated environment of the Pb(II) atom formed by four carboxyl­ate O atoms of two chelate benzoate ligands and two N atoms of the bipy ligand. …”
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“…In contrast, the presence of two calcium chelators, EGTA and BAPTA, could attenuate these effects. …”
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“…Only sulfur-based ligands, viz., chelating dithioacetate monoanions and an unusual ethane-1,1,1-trithiolate group μ(3) coordinating the Zr ions, were observed in the case of Zr(3). 1D and 2D NMR analyses confirmed the presence of differently coordinated ligands. …”
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“…Graminaceous plants use a chelation strategy. They secrete phytosiderophore compounds, which solubilize iron in the soil, and then take up the resulting iron-phytosiderophore complexes. …”
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“…Alanine substitutions in two residues of YbtT that are essential for catalytic activity in other type II TEs reduced the ability of Yersinia pestis to grow under iron-chelated conditions. The third mutant, which lacks the salicylate synthase YbtS, did not make authentic Ybt but did produce a signalling molecule. …”
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“…In contrast to some predictions from in vitro studies, prolyl hydroxylation was substantially more sensitive than asparaginyl hydroxylation to inhibition by iron chelators and transition metal ions; studies of a range of different small molecule 2-OG analogues demonstrated the feasibility of selectively inhibiting either prolyl or asparaginyl hydroxylation within cells.…”
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“…The two Nd(III) atoms are linked by two bridging bidentate carboxyl­ate groups and two bidentate chelating bridging carboxyl­ate groups, with an Nd⋯Nd separation of 4.1259 (4) Å. …”
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“…The crystal structure of the title compound, poly[[(4,7,13,16,21,24-hexa­oxa-1,10-diaza­bicyclo­[8.8.8]hexa­cosa­ne)rubidium] [[(1,4,7,10,13,16-hexa­oxacyclo­octa­deca­ne)rubidium]di-μ-rubidium-μ-nona­stannide] penta­ammonia], {[Rb(C(18)H(36)N(2)O(6))][Rb(3)Sn(9)(C(12)H(24)O(6))C(12)H(24)O(6))]·5NH(3)}(n) represents the first ammoniate of a Zintl anion together with two different chelating substances, namely 18-crown-6 and [2.2.2]-cryptand. …”
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“…Bcl-x(L) neuroprotective actions were antagonized by the Bcl-x(L) inhibitor ABT-737 and potentiated by the Ca(2+) chelator BAPTA-AM. As a consequence, this would prevent free radical production, mitochondrial membrane permeabilization, release from mitochondria of pro-apoptotic molecules, caspase activation and cellular death.…”
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