scholarly journals Anion-Dominated Copper Salicyaldimine Complexes—Structures, Coordination Mode of Nitrate and Decolorization Properties toward Acid Orange 7 Dye

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1910
Author(s):  
Meng-Jung Tsai ◽  
Chi-Jou Tsai ◽  
Ken Lin ◽  
Jing-Yun Wu
Keyword(s):  
Critical Role ◽  
Chain Structure ◽  
Planar Geometry ◽  
Zigzag Chain ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Pyramidal Geometry ◽  
Square Planar ◽  
Anion Complex ◽  
Degradation Activity

A salicyaldimine ligand, 3-tert-butyl-4-hydroxy-5-(((pyridin-2-ylmethyl)imino)methyl)benzoic acid (H2Lsalpyca) and two Cu(II)−salicylaldimine complexes, [Cu(HLsalpyca)Cl] (1) and [Cu(HLsalpyca)(NO3)]n (2), have been synthesized. Complex 1 has a discrete mononuclear structure, in which the Cu(II) center is in a distorted square-planar geometry made up of one HLsalpyca− monoanion in an NNO tris-chelating mode and one Cl− anion. Complex 2 adopts a neutral one-dimensional zigzag chain structure propagating along the crystallographic [010] direction, where the Cu(II) center suits a distorted square pyramidal geometry with a τ value of 0.134, consisted of one HLsalpyca− monoanion as an NNO tris-chelator and two NO3− anions. When the Cu∙∙∙O semi coordination is taken into consideration, the nitrato ligand bridges two Cu(II) centers in an unsymmetrical bridging-tridentate with a μ, κ4O,O′:O′,O″ coordination. Clearly, anion herein plays a critical role in dominating the formation of discrete and polymeric structures of copper salicyaldimine complexes. Noteworthy, complex 2 is insoluble but highly stable in H2O and various organic solvents (CH3OH, CH3CN, acetone, CH2Cl2 and THF). Moreover, complex 2 shows good photocatalytic degradation activity and recyclability to accelerate the decolorization rate and enhance the decolorization performance of acid orange 7 (AO7) dye by hydrogen peroxide (H2O2) under daylight.

catena-Poly[[bis(4-methoxybenzoato)copper(II)]-μ-1,1′-(oxydiethylene)diimidazole-κ2 N 3:N 3′]

2007 ◽  
Vol 63 (11) ◽  
pp. m2866-m2866
Author(s):  
Guo-Hua Wei ◽  
Lai-Ping Zhang ◽  
Ji-Cheng Ma ◽  
Jin Yang
Keyword(s):  
Title Compound ◽  
Chain Structure ◽  
Infinite Chain ◽  
Planar Geometry ◽  
Terminal Ligand ◽  
Square Planar

In the title compound, [Cu(C7H4O3)2(C10H14N4O)] n , the CuII atom lies on a centre of symmetry and is four-coordinated by two N atoms from two 1,1′-(oxydiethylene)diimidazole (BIE) ligands and two O atoms from two 4-methoxybenzoate anions in a square-planar geometry. Each BIE ligand links two CuII atoms to form an infinite chain structure along the c axis. The 4-methoxybenzoate anion, as a terminal ligand, attaches to both sides of the BIE–CuII chains.

scholarly journals Crystal structure of orthorhombic {bis[(pyridin-2-yl)methyl](3,5,5,5-tetrachloropentyl)amine-κ3N,N′,N′′}chloridocopper(II) perchlorate

2015 ◽  
Vol 71 (7) ◽  
pp. 847-851 ◽  
Author(s):  
Katherine A. Bussey ◽  
Annie R. Cavalier ◽  
Jennifer R. Connell ◽  
Margaret E. Mraz ◽  
Kayode D. Oshin ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Planar Geometry ◽  
Apical Position ◽  
Pyramidal Geometry ◽  
Counter Ion ◽  
Square Planar ◽  
Chloride Ligand ◽  
Square Pyramidal Geometry ◽  
Amine Ligand

In the title compound, [CuCl(C17H19Cl4N3)]ClO4, the CuIIion adopts a distorted square-planar geometry defined by one chloride ligand and the three nitrogen atoms from the bis[(pyridin-2-yl)methyl](3,5,5,5-tetrachloropentyl)amine ligand. The perchlorate counter-ion is disordered over three sets of sites with refined occupancies 0.0634 (17), 0.221 (16) and 0.145 (7). In addition, the hetero-scorpionate arm of the bis[(pyridin-2-yl)methyl](3,5,5,5-tetrachloropentyl)amine ligand is disordered over two sets of sites with refined occupancies 0.839 (2) and 0.161 (2). In the crystal, weak Cu...Cl interactions between symmetry-related molecules create a dimerization with a chloride occupying the apical position of the square-pyramidal geometry typical of many copper(II) chloride hetero-scorpionate complexes.

scholarly journals The synthesis and crystal structure of bis[3,3-diethyl-1-(phenylimino-κN)thiourea-κS]silver hexafluoridophosphate

2019 ◽  
Vol 75 (9) ◽  
pp. 1394-1398 ◽  
Author(s):  
Vincent M. Groner ◽  
Garrett E. Larson ◽  
Yuwei Kan ◽  
Mark F. Roll ◽  
James G. Moberly ◽  
...  
Keyword(s):  
Silver Atom ◽  
Bond Distance ◽  
Coordination Complex ◽  
Planar Geometry ◽  
Zigzag Chain ◽  
Ambient Conditions ◽  
Synthesis And Crystal Structure ◽  
Square Planar ◽  
Metal Ratio ◽  
Tetrahydrofuran Solution

The structure of the title complex, [Ag(C11H15N3S)2]PF6, has monoclinic (P21/c) symmetry, and the silver atom has a distorted square-planar geometry. The coordination complex crystallized from mixing silver hexafluoridophosphate with a concentrated tetrahydrofuran solution of N,N-diethylphenylazothioformamide [ATF; systematic name: 3,3-diethyl-1-(phenylimino)thiourea] under ambient conditions. The resultant coordination complex exhibits a 2:1 ligand-to-metal ratio, with the silver(I) atom having a fourfold AgN2S2 coordination sphere, with a single PF6 counter-ion. In the crystal, however, one sulfur atom from an ATF ligand of a neighboring complex coordinates to the silver atom, with a bond distance of 2.9884 (14) Å. This creates a polymeric zigzag chain propagating along the c-axis direction. The chains are linked by C—H...F hydrogen bonds, forming slabs parallel to the ac plane.

scholarly journals Synthesis and Characterization of Catecholato Copper(II) Complexes with Sterically Hindered Neutral and Anionic N3 Type Ligands: Tris(3,5-diisopropyl-1-pyrazolyl)methane and Hydrotris(3,5-diisopropyl-1-pyrazolyl)borate

Inorganics ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 37 ◽  
Author(s):  
Kiyoshi Fujisawa ◽  
Tetsuya Ono ◽  
Moemi Okamura
Keyword(s):  
Planar Geometry ◽  
X Ray ◽  
Pyramidal Geometry ◽  
Square Planar ◽  
Ct Transitions ◽  
Sterically Hindered ◽  
Protonated Ligand ◽  
Square Pyramidal Geometry ◽  
Oxidation State Of Copper

Three catecholato copper(II) complexes, [Cu(catCl4)(L1′)], [Cu(catBr4)(L1′)], and [Cu(catCl4)(L1H)], supported by sterically hindered neutral and anionic N3 type ligands: tris(3,5-diisopropyl-1-pyrazolyl)methane (referred to as L1′) and hydrotris(3,5-diisopropyl-1-pyrazolyl)borate (referred to as L1−), are synthesized and characterized in detail. Their X-ray structures reveal that both [Cu(catCl4)(L1′)] and [Cu(catBr4)(L1′)] complexes have a five-coordinate square-pyramidal geometry and [Cu(catCl4)(L1H)] complex has a four-coordinate square-planar geometry. The L1H is unusual protonated ligand that controls its overall charge. For the three catecholato copper(II) complexes, the oxidation state of copper is divalent, and catechol exists in catecholate as two minus anion. This difference in coordination geometry affects their d-d and CT transitions energy and ESR parameters.

scholarly journals Tetradentate organophosphines in Pt(η4–A4L) (A = P4, P3Si, P2X2 (X2 = N2, S2, C2), PX3 (X3 = N3, N2O)): Structural aspects

2021 ◽  
Vol 44 (1) ◽  
pp. 270-280
Author(s):  
Milan Melník ◽  
Peter Mikuš
Keyword(s):  
Structural Characterization ◽  
Platinum Complexes ◽  
Planar Geometry ◽  
Bond Angles ◽  
Pyramidal Geometry ◽  
Tetradentate Ligands ◽  
Square Planar ◽  
Structural Aspects

Abstract We report herein structural characterization of monomeric platinum complexes of the composition: Pt(η4–P4L), Pt(η4–P3SiL), Pt(η4–P2N2L), Pt(η4–P2S2L), Pt(η4–P2C2L), Pt(η4–PN3L), and Pt(η4–PN2OL). The tetradentate ligands with 10-, 11-, 12-, 14-, and 16-membered macrocycles create a variety of chelate bond angles. A distorted square-planar geometry about Pt(II) atoms with cis–configuration by far prevail. There is an example Pt(η4–P3SiL) in which the respective donor atoms build up a trigonal-pyramidal geometry about Pt(II) atom.

A zigzag chain coordination polymer consisting of silver(I) ion having square planar geometry

2002 ◽  
Vol 328 (1) ◽  
pp. 105-110 ◽  
Author(s):  
Yusaku Suenaga ◽  
Kouzou Kitamura ◽  
Takayoshi Kuroda-Sowa ◽  
Masahiko Maekawa ◽  
Megumu Munakata
Keyword(s):  
Coordination Polymer ◽  
Planar Geometry ◽  
Zigzag Chain ◽  
Square Planar

Bis[4-(dimethylamino)pyridinium] bis(1,2-dicyanoethene-1,2-dithiolato-κ2 S,S′)cuprate(II)

2006 ◽  
Vol 62 (5) ◽  
pp. m1119-m1121
Author(s):  
H. Zhou ◽  
X.-M. Ren
Keyword(s):  
Hydrogen Bonding ◽  
Chain Structure ◽  
Planar Geometry ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Hydrogen Bonding Interactions ◽  
Square Planar ◽  
Anions And Cations

In the title salt (C7H11N2)2[Cu(C4N2S2)2], the Cu2+ ion is coordinated by four S atoms of two 1,2-dicyanoethene-1,2-dithiolate (or maleonitriledithiolate, mnt2−) ligands in an approximate square-planar geometry. The Cu atom is located on an inversion centre. Strong hydrogen-bonding interactions between the pyridinium proton and the CN groups of the mnt2− ligand link anions and cations into a one-dimensional chain structure.

scholarly journals Crystal structure of a new mixed-metal coordination polymer consisting of NiII piperidine-dithiocarbamate and pentanuclear CuI—I cluster units

2018 ◽  
Vol 74 (2) ◽  
pp. 233-236
Author(s):  
Kento Himoto ◽  
Toshiya Horii ◽  
Shoki Oda ◽  
Shimpei Suzuki ◽  
Kunihisa Sugimoto ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Chain Structure ◽  
Mirror Plane ◽  
Zigzag Chain ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
Square Planar ◽  
Cluster Unit ◽  
Distorted Tetrahedral Coordination

A new heterometallic CuI–NiII coordination polymer, poly[[tetra-μ3-iodido-μ2-iodido-bis(μ3-piperidine-1-dithiocarbamato)propionitrilepentacopper(I)nickel(II)] chloroform monosolvate], {[CuI 5NiIII5(C6H10NS2)2(C3H5N)]·CHCl3} n , has been synthesized and structurally characterized. This coordination polymer consists of an NiII mononuclear unit of NiII(Pip-dtc)2 (Pip-dtc− is piperidine-1-dithiocarbamate) and a pentanuclear copper(I) cluster unit of Cu5I5(CH3CH2CN). The NiII ion, which lies on an inversion centre, is surrounded by four S atoms in a square-planar coordination geometry while all CuI ions have distorted tetrahedral coordination geometries. In the pentanuclear copper(I) cluster unit, a mirror plane passes through one CuI ion and three I ions. All the S atoms in NiII(Pip-dtc) are also coordinated by the CuI ions, forming an infinite zigzag chain structure along the b-axis direction. The chains are weakly connected by solvent CHCl3 molecules via Cl...I [3.653 (1) Å] and Cl...S [3.4370 (1) Å] short-contact interactions.

scholarly journals ANTIMICROBIAL EFFECT OF OLIGOMERIC COPPER(II) DERIVATIVES OF BIS(PYRIMIDIN-2-YLTHIO)- AND BIS(4,6-DIMETHYLPYRIMIDIN-2-YLTHIO)ALKANES

2016 ◽  
Vol 2 (2) ◽  
pp. 001-017
Author(s):  
Ricardo Soares Mota Silva ◽  
Márcia Cristina de Souza ◽  
Lilian Berlini ◽  
José Roberto Da Silveira Maia ◽  
Renata Diniz ◽  
...  
Keyword(s):  
Gel Permeation Chromatography ◽  
Antimicrobial Effect ◽  
Planar Geometry ◽  
X Ray Diffraction ◽  
Average Molecular Mass ◽  
E Coli ◽  
Pyramidal Geometry ◽  
Square Planar ◽  
Derivatives Of ◽  
Square Pyramidal Geometry

A novel series of copper(II) derivatives of bis(pyrimidin-2-ylthio)- and bis(4,6-dimethylpyrimidin-2-ylthio)alkane of general formula [CuxCly(L)z]n {x = 1, y = 2, z = 1, L = ptm (1), pte (2), dptm (4), dpte (5), dpth (6); x = 2, y = 4, z = 3, L = pth (3) were tested for antimicrobial activity. These complexes were characterized by elemental analysis, infrared spectroscopy (IR) and gel permeation chromatography (GPC). Complex-4, 5 and 6 have the metal at the center of a square planar geometry and in complex-1, 2 and 3 the metal is at the center a square pyramidal geometry. The structure of complex-4, determined by X-ray diffraction analysis, shows this compound as an oligomer with one-dimensional chain in zigzag conformation. The high average molecular mass (Mw) of these copper(II) complexes confirms their oligomeric character. Although the free ligands were inactive agaisnt the microorganisms tested, the copper(II) derivatives showed good antifungal and antibacterial inhibition against C. albicans, C. tropicalis, S. aureus and E. coli, more effective than Nystatin and Norfloxacin.doi: https://doi.org/10.18540/2446941602022016001

scholarly journals Novel (N4) Macrocyclic Metal Complexes: Synthesis, Characterization, Spectral Studies and Anticancer Activity

2018 ◽  
Vol 5 (1) ◽  
pp. 51-63 ◽  
Author(s):  
Hanaa A. El-Boraey ◽  
Ohyla A. EL-Gammal
Keyword(s):  
Condensation Reaction ◽  
Spectral Studies ◽  
Planar Geometry ◽  
Human Breast ◽  
Nitrogen Ligand ◽  
Pyramidal Geometry ◽  
Square Planar ◽  
Square Pyramidal Geometry ◽  
Mcf 7

Introduction:A new series of mononuclear Fe(II), Co(II), Ni(II), Cu(II) and Pd(II) complexes correspond to tetradentate macrocyclic nitrogen ligandi.e.naphthyl-3,4:10,11-dibenzo,7-methylene,8-methyl,6-phenyl-1,5,9,13-tetraazacyclohexadecane-5,8-diene-2,12-dione metal(II) complexes, have been synthesized by the template condensation reaction.Methods:The complexes have been characterized by elemental analysis, spectral (IR, UV–Vis, and ESR, molar conductivity, and magnetic as well as thermal analysis measurements.Results:On the basis of above studies, an octahedral geometry has been proposed for all complexes except Cu(II) nitrate complex that adopt square pyramidal geometry, and square planar geometry for Pd(II) chloride complex, respectively.Conclusion:The thermal behavior and the kinetic parameters of degradation were determined using Coats-Redfern and Horowitz-Metzger methods. Moreover, thein vitroantitumor activity of the some synthesized complexes against human breast and human hepatocarcinoma cell lines (MCF-7) and (HePG2), respectively has been studied.

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