Structure of catena-bis[μ-chloro-chloro-μ-quinoxaline-N,N'-copper(II)]

Lindroos, Seppo; Lumme, Paavo

doi:10.1107/s0108270190002815

Cited by 21 publications

(20 citation statements)

References 7 publications

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“…Within the coordination polyhedron both Cu-Cl and Cu-N bond distances of 2.349(1) and 2.038(4) A, respectively, fall well withinin the range of those previously reported for related compounds (15)(16)(17)(18)(19)25,26) and do not deserve further comment. The layers, see Fig.…”

Section: Resultssupporting

confidence: 62%

A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

Moreno¹,

Suárez‐Varela²,

Colacio³

et al. 1995

Can. J. Chem.

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Abstract:The crystal structure of bright-red crystals of the bidimensional polynuclear diamagnetic (kchloro)(k-pyrazine)copper(I) complex has been analyzed from X-ray diffraction data. The structure was solved by the heavy-atom method. Full-matrix least-squares refinement based on 673 reflections with F > 4u(F) converged to a final R = 0.043 and R,, = 0.048. Crystals of this complex are monoclinic, space group P2/c, a = 3.814(1), b = 6.356(1) and c = 11.497(5) A; P = 96.04(2)", Z = 2. The structure consists of planes of copper(1) atoms linked by pyrazine and C1-bridges, each Cu(1) being in a distorted tetrahedral environment formed by two chloride ions and two nitrogen atoms belonging to two pyrazine molecules, with bond distances of Cu-CI = 2.349(1) and Cu-N = 2.038(4) A. Vibrational and electronic spectroscopy of the title compound is also reported.Key words: two-dimensional copper(1)-pyrazine complexes.RCsumC : Utilisant les donnCes de la diffraction des rayons X, on a dCterminC la structure cristalline des cristaux rouge brillant du complexe diamagnktique polynuclCaire bidimensionnel (p-chloro)(k-pyrazine)cuivre(I). On a rCsolu la structure par la mkthode des atomes lourds et on l'a affinCe par la mCthode des moindres carrts

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Section: Resultssupporting

confidence: 62%

A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

Moreno¹,

Suárez‐Varela²,

Colacio³

et al. 1995

Can. J. Chem.

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“…Potentially the most unusual regime is that of almost equal rung and leg interactions. To date, only two prototype compounds are known to even come close to this "isotropic" ladder model, namely Cu(Qnx)Cl 2 and Cu(Qnx)Br 2 (CQC and CQB for short) [11][12][13] . In these materials α ∼ 1.7.…”

Section: Introductionmentioning

confidence: 99%

The tunable quantum spin ladder Cu(Qnx)(Cl(1−x)Brx)2

Povarov

Lorenz

Fan

et al. 2014

Journal of Magnetism and Magnetic Materials

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We report magnetic, specific heat and ESR measurements on a series of S = 1/2 spin ladder compounds Cu(Qnx)(Cl (1−x) Brx)2. Down to T = 2 K all the observables can be described by the spin ladder model with about 1% of S = 1/2 impurities in the background, which are present even in a nominally pure Cu(Qnx)Cl2 and Cu(Qnx)Br2, for the whole range of 0 ≤ x ≤ 1. We extract ladder exchange constants J l (x) and Jr(x) as well as the gap value ∆(x) by comparing the experimental data to quantum Monte-Carlo simulations. As the ESR measurements show the g-factor of impurities to be precisely equal to g-factor of the ladder spins, we suppose the impurities to be the consequence of structural defects resulting in a broken ladder ends.

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“…Recently, we have reported some transition metal-orotate complexes with various NϪdonor ligands [8], first neutral orotic acid complexes [9] and first bis(orotateϪN,O) complex [10]. Although the QX ligand may exhibit versatile coordinating modes such as monodentate [11] and bridged ligand [12], monomeric complexes have been written a few.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectral, Thermal and Structural Characterization of mer‐Triaquaorotatoquinoxaline Cadmium(II) Dihydrate

Yeşılel

Paşaoğlu

Akdağ

et al. 2007

Zeitschrift anorg allge chemie

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The new orotate complex of cadmium(II) with quinoxaline, mer-[Cd(HOr)(H 2 O) 3 (QX)]·2H 2 O, was synthesized and characterized by elemental analysis, FTϪIR spectroscopy, thermal analysis and single crystal XϪray diffraction techniques. The complex crystallizes in the triclinic system, space group P1. The Cd 2ϩ ion exhibits a distorted octahedral coordination by one bidentate orotate, one monodentate quinoxaline and three aqua ligands. The uncoordinated water molecules link the orotate, quinoxaline and 1731 aqua ligands via OϪH···O, OϪH···N hydrogen bonds. Thus, an extensive network of hydrogen bonds stabilizes the crystal structure and form an infinitive three dimensional lattice. The decomposition reaction takes place in the temperature range 20Ϫ700°C in the static air atmosphere. Scheme 1 Orotic acid (a), Quinoxaline (b)As a part of our going research, in this study, we describe the synthesis, spectral, thermal characterization and crystal structure of the mer-triaquaorotatoquinoxalinecadmium(II) dihydrate, mer-[Cd(HOr)(H 2 O) 3 QX]·2H 2 O (1).

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Structure of catena-bis[μ-chloro-chloro-μ-quinoxaline-N,N'-copper(II)]

Cited by 21 publications

References 7 publications

A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

A two-dimensional copper(I) polymer containing both molecular rod and anionic bridges: synthesis and crystal structure of (µ-chloro)-(µ-pyrazine)copper(I)

The tunable quantum spin ladder Cu(Qnx)(Cl(1−x)Brx)2

Synthesis, Spectral, Thermal and Structural Characterization of mer‐Triaquaorotatoquinoxaline Cadmium(II) Dihydrate

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