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Journal articles on the topic 'Anionic; Ligands'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Brennessel, William W., та John E. Ellis. "Crystal structure of (18-crown-6)potassium(I) [(1,2,3,4,5-η)-cycloheptadienyl][(1,2,3-η)-cycloheptatrienyl]cobalt(I)". Acta Crystallographica Section E Crystallographic Communications 71, № 3 (2015): 291–95. http://dx.doi.org/10.1107/s2056989015003151.

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The reaction of bis(anthracene)cobaltate(−I) with excess cycloheptatriene, C7H8, resulted in a new 18-electron cobaltate containing two different seven-membered ring ligands, based on single-crystal X-ray diffraction. The asymmetric unit of this structure contains two independent cation–anion pairs of the title complex, [K(18-crown-6)][Co(η3-C7H7)(η5-C7H9)], where 18-crown-6 stands for 1,4,7,10,13,16-hexaoxacyclooctadecane (C12H24O6), in general positions and well separated. Each (18-crown-6)potassium cation is in contact with the η3-coordinating ligand of one cobaltate complex. Each η3-coordi

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2

Ha, Kwang. "Bis(acetato-κO)(di-2-pyridylamine-κ2N2,N2′)palladium(II)". Acta Crystallographica Section E Structure Reports Online 68, № 4 (2012): m502. http://dx.doi.org/10.1107/s1600536812012093.

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In the title complex, [Pd(CH3COO)2(C10H9N3)], the PdIIion is four-coordinated in a slightly distorted square-planar environment by two pyridine N atoms of the chelating di-2-pyridylamine (dpa) ligand and two O atoms from two anionic acetate ligands. The dpa ligand coordinates the PdIIatom in a boat conformation of the resulting chelate ring; the dihedral angle between the pyridine rings is 39.3 (2)°. The two acetate anions coordinate the PdIIatom as monodentate ligands and are located on the same sides of the PdN2O2unit plane. The carboxylate groups of the anionic ligands appear to be delocali

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3

Melgar, Dolores, Nuno A. G. Bandeira, Josep Bonet Avalos, and Carles Bo. "Anions coordinating anions: analysis of the interaction between anionic Keplerate nanocapsules and their anionic ligands." Physical Chemistry Chemical Physics 19, no. 7 (2017): 5343–50. http://dx.doi.org/10.1039/c6cp08511c.

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4

Han, Li-Juan, та Ya-Jie Kong. "Poly[(μ-pentafluorobenzoato-κ2O:O′)(pentafluorobenzoato-κO)(μ-pyrazine-κ2N:N′)copper(II)]: a coordination polymer linked into a three-dimensional network by intermolecular C—H...F—C interactions". Acta Crystallographica Section C Structural Chemistry 70, № 11 (2014): 1017–20. http://dx.doi.org/10.1107/s2053229614021536.

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In the title compound, [Cu(C6F5COO)2(C4H4N2)]n, (I), the asymmetric unit contains one CuIIcation, two anionic pentafluorobenzoate ligands and one pyrazine ligand. Each CuIIcentre is five-coordinated by three O atoms from three independent pentafluorobenzoate anions, as well as by two N atoms from two pyrazine ligands, giving rise to an approximately square-pyramidal coordination geometry. Adjacent CuIIcations are bridged by a pyrazine ligand and two pentafluorobenzoate anions to give a two-dimensional layer. The layers are stacked to generate a three-dimensional supramolecular architecturevias

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5

Neumann, Tristan, Inke Jess та Christian Näther. "Crystal structure ofcatena-poly[[[bis(pyridine-4-carbothioamide-κN1)cadmium]-di-μ-thiocyanato-κ2N:S;κ2S:N] methanol disolvate]". Acta Crystallographica Section E Crystallographic Communications 72, № 3 (2016): 370–73. http://dx.doi.org/10.1107/s2056989016002632.

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The asymmetric unit of the polymeric title compound, {[Cd(NCS)2(C6H6N2S)]·2CH3OH}n, consists of one cadmium(II) cation that is located on a centre of inversion as well as one thiocyanate anion, one pyridine-4-carbothioamide ligand and one methanol molecule in general positions. The CdIIcations are octahedrally coordinated by the pyridine N atom of two pyridine-4-carbothioamide ligands and by the S and N atoms of four thiocyanate anions and are linked into chains along [010] by pairs of anionic ligands. These chains are further linked into layers extending along (201) by intermolecular N—H...O

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6

Aly, Aref A. M., and Asma I. El-Said. "Spectral and Thermal Studies on Some New Anionic Mixed Alkyldithiocarbonato-Oxinato Transition Metal Complexes." Zeitschrift für Naturforschung B 44, no. 3 (1989): 323–26. http://dx.doi.org/10.1515/znb-1989-0313.

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The preparation and characterization of some anionic mixed ligand com plexes of Co(II), Ni(II) and Cu(II) containing the two anionic ligands alkyldithiocarbonate and oxinate are reported. The ionic nature of the complexes was inferred from the conductivity data. Alkyldithiocarbonates act in these complexes as bidentate ligands. Based on the spectroscopic and magnetic data the complexes appear to possess pseudo-octahedral metal coordination.

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7

Lu, Yang, Wei-Qiang Liao, and Xiu-Ni Hua. "A new two-dimensional polymeric cadmium(II) complex containing dicyanamide bridging ligands." Acta Crystallographica Section C Structural Chemistry 73, no. 11 (2017): 885–88. http://dx.doi.org/10.1107/s2053229617013614.

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As part of an exploration of new coordination polymers, a cadmium-dicyanamide complex, namely poly[benzyltriethylammonium [tri-μ-dicyanamido-κ6 N 1:N 5-cadmium(II)]], {(C13H22N)[Cd(C2N3)3]} n , has been synthesized by the reaction of benzyltriethylammonium bromide, cadmium nitrate tetrahydrate and sodium dicyanamide in aqueous solution, and characterized by single-crystal X-ray diffraction at room temperature. In the crystal structure, each CdII cation is coordinated by six nitrile N atoms from six anionic dicyanamide (dca) ligands to furnish a slightly distorted octahedral geometry. Neighbour

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8

Fisher, Steven P., Anton W. Tomich, Juchen Guo, and Vincent Lavallo. "Teaching an old dog new tricks: new directions in fundamental and applied closo-carborane anion chemistry." Chemical Communications 55, no. 12 (2019): 1684–701. http://dx.doi.org/10.1039/c8cc09663e.

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In this feature article we cover new directions in the fundamental and applied chemistry of the closo-carborane anions [HCB<sub>11</sub>H<sub>11</sub>]<sup>−1</sup> and [HCB<sub>9</sub>H<sub>9</sub>]<sup>−1</sup>, including energy storage applications, ionic liquids, anionic carborane fused heterocycles/radicals, ligand substituents, and ligands for catalysis and coordination chemistry.

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9

Buvaylo, Elena A., Vladimir N. Kokozay, Olga Yu Vassilyeva та Brian W. Skelton. "Bis{2-[(pyridin-2-yl)methylideneamino]benzoato-κ3N,N′,O}chromium(III) nitrate monohydrate". Acta Crystallographica Section E Structure Reports Online 70, № 4 (2014): m136. http://dx.doi.org/10.1107/s1600536814005649.

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The title complex salt hydrate, [Cr(C13H9N2O2)2]NO3·H2O, comprises discrete cations, nitrate anions and solvent water molecules. The CrIIIatom is octahedrally coordinated by two anionic Schiff base ligands with the O atoms beingcis. The two ligands differ significantly with dihedral angles between the pyridine and benzene rings of 4.8 (2) and 24.9 (2)°. The nitrate anion and solvent water molecule were modelled as being disordered, with the major components having site-occupancy values of 0.856 (14) and 0.727 (16), respectively. The crystal is built of alternating layers of cations and of anio

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10

Nicolas, Emmanuel, Thibault Cheisson, G. Bas de Jong, Cornelis G. J. Tazelaar, and J. Chris Slootweg. "A new synthetic route to the electron-deficient ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide." Acta Crystallographica Section C Structural Chemistry 72, no. 11 (2016): 846–49. http://dx.doi.org/10.1107/s2053229616015035.

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The anionic tris(pyrazolyl)borates, or scorpionates, have proven to be extremely useful ligands. Neutral tris(pyrazolyl)methane ligands, however, are difficult to prepare and require numerous purification steps for a number of substitution patterns. We have previously outlined two different routes for accessing neutral tris(pyrazolyl) ligands. We describe here an adaptation of the previously published procedures for the synthesis of the electron-poor ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide, C9Br9N6OP. Similar electron-deficient ligands have been proven to unlock unique chemistry

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11

Unsleber, Jan P., Johannes Neugebauer, and Robert H. Morris. "DFT methods applied to answer the question: how accurate is the ligand acidity constant method for estimating the pKa of transition metal hydride complexes MHXL4 when X is varied?" Dalton Transactions 47, no. 8 (2018): 2739–47. http://dx.doi.org/10.1039/c7dt03473c.

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Additive ligand acidity constants A<sub>L</sub> of anionic ligands are calculated for neutral hydrides of iron(ii), ruthenium(ii) and osmium(ii) with phosphine and carbonyl co-ligands; constant A<sub>L</sub> in green, more variable A<sub>L</sub> in red.

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12

Liu, Chen, Annaliese E. Thuijs та Khalil A. Abboud. "Crystal structure ofcatena-poly[bis(tetraethylammonium) [tetraaquatris(μ-dicyanamido-κ2N1:N5)bis(dicyanamido-κN1)dicobaltate(II)] dicyanamide]". Acta Crystallographica Section E Crystallographic Communications 72, № 11 (2016): 1603–6. http://dx.doi.org/10.1107/s2056989016016637.

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The structure of the title compound, [N(C2H5)4]2[Co2(C2N3)5(H2O)4](C2N3), is a new example of a metal–dicyanamide coordination polymer which exhibits a unique three-dimensional framework of covalently linked CoIIchains. All bridging dicyanamide ligands in the title structure are in theμ1,5-bridging mode. The anionic CoII-dicyanamide network is templated by tetraethylammonium cations residing in a series of channels extending along thebaxis where additional non-coordinating dicyanamidate anions are also located. The framework structure is further stabilized by O—H...N hydrogen bonding between a

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13

Watanabe, Kohei, Atsushi Ueno, Xin Tao, et al. "Reactions of an anionic chelate phosphane/borata-alkene ligand with [Rh(nbd)Cl]2, [Rh(CO)2Cl]2 and [Ir(cod)Cl]2." Chemical Science 11, no. 28 (2020): 7349–55. http://dx.doi.org/10.1039/d0sc02223c.

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14

Luo, Yanqing, Tao Tan, Sen Wang та ін. "Multivariant ligands stabilize anionic solvent-oriented α-CsPbX3 nanocrystals at room temperature". Nanoscale 13, № 9 (2021): 4899–910. http://dx.doi.org/10.1039/d0nr08697e.

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A self-assembly method is proposed for cubic phase CsPbX<sub>3</sub> nanocrystals under ambient conditions. Long-term stability and high quantum efficiency are maintained via ligand evolution from paired X type ligands to hybrid L–X type ligands.

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15

Thiel, Indre, and Marko Hapke. "The broad diversity of CpCo(I) complexes." Reviews in Inorganic Chemistry 34, no. 4 (2014): 217–45. http://dx.doi.org/10.1515/revic-2014-0001.

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AbstractThe presented review will focus on the systematic overview of the available synthetic approaches and the reactivity and the structural characteristics of selected mononuclear CpCo(I) complexes with (non)chelating neutral donor ligands. The complexes containing symmetrical or unsymmetrical neutral ligand combinations aside from the anionic cyclopentadienyl (Cp) ligand will be discussed and the differences to complexes with substituted Cp ligands will be considered in selected cases.

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16

Lawrence, Samuel R., David B. Cordes, Alexandra M. Z. Slawin, and Andreas Stasch. "Mechanistic insights of anionic ligand exchange and fullerene reduction with magnesium(i) compounds." Dalton Transactions 48, no. 45 (2019): 16936–42. http://dx.doi.org/10.1039/c9dt03976g.

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17

Santiago, Tomás G., Carmen Urbaneja, Eleuterio Álvarez, Elena Ávila, Pilar Palma, and Juan Cámpora. "Neutral, cationic and anionic organonickel and -palladium complexes supported by iminophosphine/phosphinoenaminato ligands." Dalton Transactions 49, no. 2 (2020): 322–35. http://dx.doi.org/10.1039/c9dt04062e.

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Ligand exchange and oxidative addition reactions allow the synthesis of Ni(ii) and Pd(ii) complexes with deprotonable iminophosphine ligands. The acid–base behavior of iminophosphine ligands coordinated to organometallic Ni(ii) fragments is analyzed.

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18

Drozdov, A. A., S. I. Troyanov, A. P. Pisarevsky, and Yu T. Struchkov. "New oligomeric mixed ligand barium chelates containing additional anionic ligands." Polyhedron 13, no. 9 (1994): 1445–52. http://dx.doi.org/10.1016/s0277-5387(00)81713-1.

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19

Cuza, Emmelyne, Samia Benmansour, Nathalie Cosquer, et al. "Spin Cross-Over (SCO) Anionic Fe(II) Complexes Based on the Tripodal Ligand Tris(2-pyridyl)ethoxymethane." Magnetochemistry 6, no. 2 (2020): 26. http://dx.doi.org/10.3390/magnetochemistry6020026.

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Reactions of Fe(II) with the tripodal chelating ligand 1,1,1-tris(2-pyridyl)ethoxymethane (py3C-OEt) and (NCE)− co-ligands (E = S, Se, BH3) give a series of mononuclear complexes formulated as [Fe(py3C-OEt)2][Fe(py3C-OEt)(NCE)3]2·2CH3CN, with E = S (1) and BH3 (2). These compounds are the first Fe(II) spin cross-over (SCO) complexes based on the tripodal ligand tris(2-pyridyl)ethoxymethane and on the versatile co-ligands (NCS)− and (NCBH3)−. The crystal structure reveals discrete monomeric isomorph structures formed by a cationic [Fe(py3C-OEt)2]2+ complex and by two equivalent anionic [Fe(py3C

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20

Łukasiewicz, Marta, Zbigniew Ciunik, and Stanisław Wołowiec. "Complexes of heteroscorpionate trispyrazolylborate anionic ligands." Polyhedron 19, no. 20-21 (2000): 2119–25. http://dx.doi.org/10.1016/s0277-5387(00)00512-x.

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21

Łukasiewicz, Marta, Zbigniew Ciunik, Tomasz Ruman, Małgorzata Skóra, and Stanisław Wołowiec. "Complexes of heteroscorpionate trispyrazolylborate anionic ligands." Polyhedron 20, no. 3-4 (2001): 237–44. http://dx.doi.org/10.1016/s0277-5387(00)00637-9.

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22

Zhou, Qin-Qin, Lei Jin, Wei-Qiang Liao та Yi Zhang. "A potential molecular ferroelectric material: poly[[bis(1-aza-4-azoniabicyclo[2.2.2]octane)di-μ3-chlorido-tetra-μ2-chlorido-dichloridotricadmium(II)] dihydrate]". Acta Crystallographica Section C Crystal Structure Communications 69, № 3 (2013): 237–40. http://dx.doi.org/10.1107/s0108270113003892.

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The title compound, {[Cd3(C6H13N2)2Cl8]·2H2O}n, consists of pendant protonated cationic diamine ligands bonded to an anionic one-dimensional coordination polymer chloridocadmate scaffold. Each coordination chain features two kinds of CdIIcentre, each with distorted octahedral coordination geometry. One CdIIcation lies on a centre of inversion and is coordinated by six bridging chloride ligands, while the other is coordinated by four bridging chloride ligands, one terminal chloride ligand and a 1-aza-4-azoniabicyclo[2.2.2]octane aza N atom. This gives a reversible corner-sharing half-cubic line

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23

Finkina, Ekaterina I., Daria N. Melnikova, Ivan V. Bogdanov, et al. "Impact of Different Lipid Ligands on the Stability and IgE-Binding Capacity of the Lentil Allergen Len c 3." Biomolecules 10, no. 12 (2020): 1668. http://dx.doi.org/10.3390/biom10121668.

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Previously, we isolated the lentil allergen Len c 3, belonging to the class of lipid transfer proteins, cross-reacting with the major peach allergen Pru p 3 and binding lipid ligands. In this work, the allergenic capacity of Len c 3 and effects of different lipid ligands on the protein stability and IgE-binding capacity were investigated. Impacts of pH and heat treating on ligand binding with Len c 3 were also studied. It was shown that the recombinant Len c 3 (rLen c 3) IgE-binding capacity is sensitive to heating and simulating of gastroduodenal digestion. While being heated or digested, the

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24

Nomura, Kotohiro. "Solution X-Ray Absorption Spectroscopy (XAS) for Analysis of Catalytically Active Species in Reactions with Ethylene by Homogeneous (Imido)vanadium(V) Complexes—Al Cocatalyst Systems." Catalysts 9, no. 12 (2019): 1016. http://dx.doi.org/10.3390/catal9121016.

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Solution V K-edge XANES (X-ray absorption near edge structure) and EXAFS (extended X-ray absorption fine structure) analysis of vanadium(V) complexes containing both imido ligands and anionic ancillary donor ligands (L) of type, V(NR)(L)X2 (R = Ar, Ad (1-adamantyl); Ar = 2,6-Me2C6H3; X = Cl, Me, L = 2-(ArNCH2)C5H4N, OAr, WCA-NHC, and 2-(2’-benzimidazolyl)pyridine; WCA-NHC = anionic NHCs containing weak coordinating B(C6F5)3), which catalyze ethylene dimerization and/or polymerization in the presence of Al cocatalysts, has been explored. Different catalytically actives species with different ox

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25

Liu, Yongchun, Zhengyin Yang, Kejun Zhang, Yun Wu, Jihua Zhu, and Tianlin Zhou. "Crystal Structures, Antioxidation, and DNA Binding Properties of SmIII Complexes." Australian Journal of Chemistry 64, no. 3 (2011): 345. http://dx.doi.org/10.1071/ch10302.

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The dinuclear SmIII complexes with 1:1 metal to ligand stoichiometry were prepared from Sm(NO3)3·6H2O and three anionic tetradentate Schiff-base ligands derived from 8-hydroxyquinoline-2-carboxyaldehyde with benzoylhydrazine, 2-hydroxybenzoylhydrazine, and isonicotinylhydrazine, respectively. All the ligands and complexes can bind strongly to calf thymus DNA through intercalation with the binding constants at 105–106 M–1, but complexes present stronger affinities to DNA than ligands. All the ligands and complexes have strong abilities of antioxidation, but complexes and ligands containing an a

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26

Wöhlert, Susanne, Mario Wriedt, Inke Jess та Christian Näther. "Bis(dicyanamido-κN)tetrakis(pyridine-κN)nickel(II)". Acta Crystallographica Section E Structure Reports Online 68, № 6 (2012): m745. http://dx.doi.org/10.1107/s1600536812019691.

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In the crystal structure of the title compound, [Ni(C2N3)2(C5H5N)4], the NiII cations are coordinated by four pyridine ligands and two dicyanamide anions into discrete complexes. The shortest Ni...Ni separation is 8.1068 (10) Å. The structure is pseudo-centrosymmetric and can also be refined in the space group C2/c in which both anionic ligands are strongly disordered and the refinement leads to significantly poorer reliability factors.

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27

Mbiangué, Yves Alain, Alfred Bijvédé, Patrice Kenfack Tsobnang, Emmanuel Wenger та Claude Lecomte. "Crystal structure of diammonium bis[tris(oxamide dioxime-κ2 N,N′)nickel(II)] bis[tris(oxalato-κ2 O,O′)chromate(III)] 6.76-hydrate". Acta Crystallographica Section E Crystallographic Communications 76, № 11 (2020): 1732–36. http://dx.doi.org/10.1107/s2056989020013390.

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The asymmetric unit of the title compound, (NH4)2[Ni(C2H6N4O2)3]2[Cr(C2O4)3]2·6.76H2O, comprises two NH4 + cations, two [Ni(C2H6N4O2)3]2+ cations and two [Cr(C2O4)3]3– anions, as well as eight water molecules of crystallization of which only one is fully occupied. In the cationic and anionic complexes, the central atoms (NiII and CrIII) are each surrounded by three bidentate ligands (N-chelating oxamide dioxime and O-chelating oxalate, respectively), resulting in distorted octahedral coordination spheres. In the crystal, O—H...O hydrogen bonds between the oxamide dioxime ligands as donor group

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28

Tole, Tegene T., Johannes H. L. Jordaan та Hermanus C. M. Vosloo. "α-Pyridinyl Alcohols, α,α’-Pyridine Diols, α-Bipyridinyl Alcohols, and α,α’-Bipyridine Diols as Structure Motifs Towards Important Organic Molecules and Transition Metal Complexes". Current Organic Synthesis 17, № 5 (2020): 344–66. http://dx.doi.org/10.2174/1570179417666200212111049.

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Background: The preparation and use of pyridinyl alcohols as ligands showed incredible increment in the past three decades. Important property of pyridinyl alcoholato ligands is their strong basicity, which is mainly due to the lack of resonance stabilization of the corresponding anion. This strongly basic anionic nature gives them high ability to make bridges between metal centers rather than to bind to only one metal center in a terminal fashion. They are needed as ligands due to their ability to interact with transition metals both covalently (with oxygen) and hemilabile coordination (throu

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29

Devi, Rachna, Marikumar Rajendran, Kasturi Singh, Raksha Pal, and Sivakumar Vaidyanathan. "Smart luminescent molecular europium complexes and their versatile applications." Journal of Materials Chemistry C 9, no. 20 (2021): 6618–33. http://dx.doi.org/10.1039/d1tc01049b.

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A series of smart luminescent Eu(iii) complexes (C1 = Eu(DBM)<sub>3</sub>ligand 1, C2 = Eu(DBM)<sub>3</sub>ligand 2, C3 = Eu(DBM)<sub>3</sub>ligand 3, C4 = Eu(DBM)<sub>3</sub> ligand 4, C5 = Eu(DBM)<sub>3</sub>ligand 5) were synthesized by using C1-functionalized phenanthro-imidazole derivatives as the neutral ligands and dibenzoylmethanate (DBM) as the anionic ligand.

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30

Karsch, H. H. "Ambidentate, Anionic Phosphine Ligands in Organoelement Chemistry." Phosphorus, Sulfur, and Silicon and the Related Elements 77, no. 1-4 (1993): 41–44. http://dx.doi.org/10.1080/10426509308045614.

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31

Kobayashi, Kaede, Yukina Harada, Kazuki Ikenaga, Yasutaka Kitagawa, Masayoshi Nakano, and Takashi Kajiwara. "Correlation between Slow Magnetic Relaxations and Molecular Structures of Dy(III) Complexes with N5O4 Nona-Coordination." Magnetochemistry 5, no. 2 (2019): 27. http://dx.doi.org/10.3390/magnetochemistry5020027.

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A series of Dy(III) mononuclear complexes [DyA2L]+ (L denotes Schiff base N5 ligand that occupies equatorial positions and A− denotes bidentate anionic O-donor ligands such as NO3− (1), AcO− (2), and acac− (3)) were synthesized to investigate the correlation between the slow magnetic relaxation phenomena and the coordination structures around Dy(III). The Dy(III) ion in each complex is in a nona-coordination with the anionic O-donor ligand occupying up- and down-side positions of the N5 equatorial plane. 2 and 3 show slow magnetic relaxation phenomena under a zero bias-field condition, and all

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32

Simler, Thomas, Andreas A. Danopoulos, and Pierre Braunstein. "Non-symmetrical, potentially redox non-innocent imino NHC pyridine ‘pincers’ via a zinc ion template-assisted synthesis." Dalton Transactions 46, no. 18 (2017): 5955–64. http://dx.doi.org/10.1039/c7dt01014a.

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A Zn<sup>II</sup>-promoted modular synthesis allows access to new non-symmetrical, redox-active imino NHC pyridine pincer ligands. Radical anionic and dianionic redox states of the ligand are involved in its Fe<sup>II</sup> complexes obtained from FeBr<sub>2</sub>/KC<sub>8</sub>.

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Steczek, Lukasz, Jerzy Narbutt, Marie-Christine Charbonnel, and Philippe Moisy. "Determination of formation constants of uranyl(VI) complexes with a hydrophilic SO3-Ph-BTP ligand, using liquid-liquid extraction." Nukleonika 60, no. 4 (2015): 821–27. http://dx.doi.org/10.1515/nuka-2015-0150.

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Abstract Complex formation between uranyl ion, UO22+, and a hydrophilic anionic form of SO3-Ph-BTP4- ligand, L4-, in water was studied by liquid-liquid extraction experiments performed over a range of the ligand and HNO3 concentrations in the aqueous phase, at a constant concentration of nitrate anions at 25°C . The competition for UO22+ ions between the lipophilic TODGA extractant and the hydrophilic L4- ligand leads to the decrease in the uranyl distribution ratios, D, with an increasing L4- concentration. The model of the solvent extraction process used accounts - apart from uranyl complexa

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34

Cheng, Kai, Qi-Xia Bai, Shao-Jun Hu, et al. "Water-stable lanthanide–organic macrocycles from a 1,2,4-triazole-based chelate for enantiomeric excess detection and pesticide sensing." Dalton Transactions 50, no. 17 (2021): 5759–64. http://dx.doi.org/10.1039/d1dt00726b.

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Water-stable anionic Ln<sub>2</sub>L<sub>2</sub>-type macrocycles have been constructed from a 1,2,4-triazole-based ligand, of which the luminescent Eu<sub>2</sub>L<sub>2</sub> macrocycle can be used for ee detection toward pybox-type chiral ligands and selective sensing of OMA in water.

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Wang, Hui-Ting. "Two different anionic manganese(II) coordination polymers constructed through dicyanamide coordination bridges." Acta Crystallographica Section C Structural Chemistry 71, no. 10 (2015): 850–55. http://dx.doi.org/10.1107/s2053229615015818.

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In order to explore new metal coordination polymers and to search for new types of ferroelectrics among hybrid coordination polymers, two manganese dicyanamide complexes, poly[tetramethylammonium [di-μ3-dicyanamido-κ6N1:N3:N5-tri-μ2-dicyanamido-κ6N1:N5-dimanganese(II)]], {[(CH3)4N][Mn2(NCNCN)5]}n, (I), andcatena-poly[bis(butyltriphenylphosphonium) [[(dicyanamido-κN1)manganese(II)]-di-μ2-dicyanamido-κ4N1:N5]], {[(C4H9)(C6H5)3P]2[Mn(NCNCN)4]}n, (II), were synthesized in aqueous solution. In (I), one MnIIcation is octahedrally coordinated by six nitrile N atoms from six anionic dicyanamide (dca)

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36

Neumann, Tristan, Inke Jess, Cesar dos Santos Cunha, Huayna Terraschke, and Christian Näther. "Cd(II) and Zn(II) thiocyanate coordination compounds with 3-ethylpyridine: synthesis, crystal structures and properties." Zeitschrift für Naturforschung B 73, no. 2 (2018): 115–23. http://dx.doi.org/10.1515/znb-2017-0186.

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AbstractReaction of Cd(NCS)2 and Zn(NCS)2 with 3-ethylpyridine leads to the formation of compounds of compositions M(NCS)2(3-ethylpyridine)4 (M=Cd, 1-Cd; Zn, 1-Zn) and M(NCS)2(3-ethylpyridine)2 (M=Cd, 2-Cd; Zn, 2-Zn). 1-Cd and 1-Zn are isotypic and form discrete complexes in which the metal cations are octahedrally coordinated by two trans-coordinating N-bonded thiocyanate anions and four 3-ethylpyridine co-ligands. In 2-Cd the cations are also octahedrally coordinated but linked into chains by pairs of μ-1,3-bridging anionic ligands. 2-Zn is built up of discrete complexes, in which the Zn cat

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Narro, Ana L., Hadi D. Arman, and Zachary J. Tonzetich. "Manganese Chemistry of Anionic Pyrrole-Based Pincer Ligands." Organometallics 38, no. 8 (2019): 1741–49. http://dx.doi.org/10.1021/acs.organomet.9b00058.

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38

Brammer, L., G. M. Espallargas, J. Ormond-Prout, I. V. Yrezabal, S. Libri, and F. Zordan. "Halogen bonding involving metallate ions and anionic ligands." Acta Crystallographica Section A Foundations of Crystallography 67, a1 (2011): C136. http://dx.doi.org/10.1107/s0108767311096656.

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Pascu, Mirela, Mathieu Marmier, Clément Schouwey, et al. "Anionic Bipyridyl Ligands for Applications in Metallasupramolecular Chemistry." Chemistry - A European Journal 20, no. 19 (2014): 5592–600. http://dx.doi.org/10.1002/chem.201400285.

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Pascu, Mirela, Mathieu Marmier, Clément Schouwey, et al. "Anionic Bipyridyl Ligands for Applications in Metallasupramolecular Chemistry." Chemistry - A European Journal 20, no. 19 (2014): 5517. http://dx.doi.org/10.1002/chem.201400432.

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41

Fedushkin, Igor L., Olga V. Eremenko, Alexandra A. Skatova, et al. "Binuclear Zinc Complexes with Radical-Anionic Diimine Ligands." Organometallics 28, no. 13 (2009): 3863–68. http://dx.doi.org/10.1021/om900291x.

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42

Cutruzzolà, Francesca, Carlo Travaglini Allocatelli, Paolo Ascenzi, Martino Bolognesi, Stephen G. Sligar, and Maurizio Brunori. "Control and recognition of anionic ligands in myoglobin." FEBS Letters 282, no. 2 (1991): 281–84. http://dx.doi.org/10.1016/0014-5793(91)80495-o.

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43

Zhang, Jinfang. "catena-Poly[[tetrakis(hexamethylphosphoramide-κO)bis(nitrato-κ2 O,O′)terbium(III)] [silver(I)-di-μ-sulfido-tungstate(VI)-di-μ-sulfido]]". Acta Crystallographica Section E Structure Reports Online 68, № 6 (2012): m843—m844. http://dx.doi.org/10.1107/s1600536812023823.

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In the title compound, {[Tb(NO3)2(C6H18N3OP)4][AgWS4]} n , the polymeric anionic chain {[AgWS4]−} n extends along [001]. The TbIII atom in the cation is coordinated by eight O atoms from two nitrate and four hexamethylphosphate ligands in a distorted square-antiprismatic geometry. Together with the two nitrate ligands, the cation is univalent, which leads to the anionic chain having a [WS4Ag] repeat unit. The polymeric anionic chain has a distorted linear configuration with W—Ag—W and Ag—W—Ag angles of 161.49 (2) and 153.743 (13) °, respectively. The title complex is isotypic with the Y, Yb, E

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44

Sun, Lijun, Songlin Zhang та Qijun Song. "(4-Chloroacetanilido-κ2N,O)bis[2-(pyridin-2-yl)phenyl-κ2C1,N]iridium(III)". Acta Crystallographica Section E Structure Reports Online 69, № 2 (2013): m98. http://dx.doi.org/10.1107/s1600536813000433.

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In the neutral mononuclear iridium(III) title compound, [Ir(C8H7ClNO)(C11H8N)2], the IrIIIatom adopts an octahedral geometry, and is coordinated by two 2-phenylpyridyl ligands and one anionic 4-chloroacetanilide ligand. The 2-phenylpyridyl ligands are arranged in acis-C,C′ andcis-N,N′ fashion. Each 2-phenylpyridyl ligand forms a five-membered ring with the IrIIIatom. The 2-phenylpyridyl planes are perpendicular to each other [dihedral angle = 89.9 (1)°]. The Ir—C and Ir—N bond lengths are comparable to those reported for related iridium(III) 2-phenylpyridyl complexes. The remaining two coordin

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Muñoz-Molina, José María, Tomás R. Belderrain, and Pedro J. Pérez. "Group 11 tris(pyrazolyl)methane complexes: structural features and catalytic applications." Dalton Transactions 48, no. 29 (2019): 10772–81. http://dx.doi.org/10.1039/c9dt01661a.

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46

Wombacher, Tobias, Richard Goddard, Christian W. Lehmann, and Jörg J. Schneider. "Complete charge separation provoked by full cation encapsulation in the radical mono- and di-anions of 5,6:11,12-di-o-phenylene-tetracene." Dalton Transactions 47, no. 32 (2018): 10874–83. http://dx.doi.org/10.1039/c8dt01285g.

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Full encapsulation of the K<sup>+</sup>counterions between two benzo-15-crown-5-ether (B15C5) ligands results in a (κ<sup>10</sup>O) environment which ensures a complete cation/anion separation resulting in planar bare anionic PAH species [L<sub>DOPT</sub>˙<sup>−</sup>] and [L<sub>DOPT</sub><sup>2−</sup>].

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47

Mirzaei, Masoud, Hossein Eshtiagh-Hosseini, Ehsan Eydizadeh, Zakieh Yousefi та Krešimir Molčanov. "9-Aminoacridinium bis(pyridine-2,6-dicarboxylato-κ3 O 2,N,O 6)ferrate(III) tetrahydrate". Acta Crystallographica Section E Structure Reports Online 68, № 6 (2012): m761—m762. http://dx.doi.org/10.1107/s1600536812020247.

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The asymmetric unit of the title compound, (C13H11N2)[Fe(C7H3NO4)2]·4H2O, contains a 9-aminoacridinium cation, one anionic complex and four uncoordinated water molecules. In the anionic complex, the FeIII ion is six-coordinated by two almost perpendicular [dihedral angle = 88.78 (7)°] pyridine-2,6-dicarboxylate ligands in a distorted octahedral geometry. In the crystal, anions are connected into chains along [10-1] by weak C—H...O interactions, which create ten-membered hydrogen-bonded R 2 2(10) rings. These chains are linked by three-membered water clusters. The final three-dimensional networ

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48

Katsoulakou, Eugenia, Konstantis F. Konidaris, Catherine P. Raptopoulou, Vassilis Psyharis, Evy Manessi-Zoupa, and Spyros P. Perlepes. "Synthesis, X-Ray Structure, and Characterization ofCatena-bis(benzoate)bis{N,N-bis(2-hydroxyethyl)glycinate}cadmium(II)." Bioinorganic Chemistry and Applications 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/281932.

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The reaction of -bis(2-hydroxyethyl)glycine (bicine; ) with in MeOH yielded the polymeric compound . The complex crystallizes in the tetragonal space group . The lattice constants are and Å. The compound contains chains of repeating units. One atom is coordinated by two carboxylate oxygen, four hydroxyl oxygen, and two nitrogen atoms from two symmetry-related 2.21111 (Harris notation) ligands. The other atom is coordinated by six carboxylate oxygen atoms, four from two ligands and two from the monodentate benzoate groups. Each bicinate(-1) ligand chelates the 8-coordinate, square antiprismatic

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49

Donnelly, Liam J., Simon Parsons, Carole A. Morrison, Stephen P. Thomas, and Jason B. Love. "Synthesis and structures of anionic rhenium polyhydride complexes of boron–hydride ligands and their application in catalysis." Chemical Science 11, no. 36 (2020): 9994–99. http://dx.doi.org/10.1039/d0sc03458d.

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Exhaustive deoxygenation of perrhenate by pinacol borane forms a new Re anion of boron and hydride ligands only that undergoes borane ligand exchange, stoichiometric C–H boration, and catalytic pyridine hydroboration.

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50

Li, Qiang, and Hui-Ting Wang. "A new three-dimensional anionic cadmium(II) dicyanamide network." Acta Crystallographica Section C Structural Chemistry 70, no. 11 (2014): 1054–56. http://dx.doi.org/10.1107/s2053229614022360.

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A new cadmium dicyanamide complex, poly[tetramethylphosphonium [μ-chlorido-di-μ-dicyanamido-κ4N1:N5-cadmium(II)]], [(CH3)4P][Cd(NCNCN)2Cl], was synthesized by the reaction of tetramethylphosphonium chloride, cadmium nitrate tetrahydrate and sodium dicyanamide in aqueous solution. In the crystal structure, each CdIIatom is octahedrally coordinated by four terminal N atoms from four anionic dicyanamide (dca) ligands and by two chloride ligands. The dicyanamide ligands play two different roles in the building up of the structure; one role results in the formation of [Cd(dca)Cl]2building blocks, w

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