Magnetic and Electronic Properties of Three New Hetero-Bimetallic Coordination Frameworks [Ru2(O2CR)4][Au(CN)2] (R = Benzoic Acid, Furan-2-carboxylate, or Thiophen-2-carboxylate)

2014 ◽  
Vol 67 (11) ◽  
pp. 1607 ◽  
Author(s):  
Michael J. Murphy ◽  
Tony D. Keene ◽  
Jason R. Price ◽  
Deanna M. D'Alessandro ◽  
Cameron J. Kepert
Keyword(s):  
Electronic Properties ◽  
Chain Structure ◽  
Magnetic Behaviour ◽  
Zero Field ◽  
Dimensional Chain ◽  
Structure And Properties ◽  
Zero Field Splitting ◽  
One Dimensional ◽  
The One ◽  
Coordination Frameworks

The crystal structures and magnetic and electronic properties of three new hetero-bimetallic coordination frameworks, [Ru2(O2CR)4][Au(CN)2] (R = phenyl (1(Ph)), 2-furan (1(Furan)), and 2-thiophene (1(Thio)), have been characterised. Through variation of the functionalised carboxylate group, both the one-dimensional chain structure and properties of the frameworks have been systematically modulated. The magnetic behaviour for each framework has been modelled with a zero-field splitting model and the presence of weak inter-dimer coupling was assessed.

The one-dimensional chain structure of [Cu(en)2Pt(CN)4] (en is ethylenediamine)

2006 ◽  
Vol 62 (4) ◽  
pp. m862-m864 ◽  
Author(s):  
Takashiro Akitsu ◽  
Yasuaki Einaga
Keyword(s):  
Title Compound ◽  
Bond Distance ◽  
Chain Structure ◽  
Coordination Bond ◽  
Dimensional Chain ◽  
Teller Distortion ◽  
One Dimensional ◽  
Jahn Teller ◽  
The One ◽  
Jahn Teller Distortion

The title compound, catena-poly[di-μ-cyano-1:2κ2 C:N;1:2′κ2 C:N-dicyano-1-κ2 C-bis(ethylenediamine-2κ2 N,N′)platinum(II)copper(II)], [CuPt(CN)4(C2H8N2)2] n , (I), consists of one-dimensional chains running along the [111] direction. Both Cu and Pt atoms are located on centres of symmetry in an alternating array of [Cu(en)2]2+ (en is ethylenediamine) and [Pt(CN)4]2− units. The Pt—C coordination bond distances of 1.985 (4) and 1.995 (4) Å are longer than those of an analogous NiII complex. Moreover, due to Jahn–Teller distortion, the axial Cu—N bond distance of 2.562 (5) Å is longer than the equatorial ones of 2.014 (4) and 2.017 (4) Å.

Magnetic Viscosity at the Metamagnetic Phase Transition in Organic Mnll(hfac)2 Compound with the One-Dimensional Chain Structure

2001 ◽  
Vol 373-376 ◽  
pp. 441-444 ◽  
Author(s):  
N.V. Baranov ◽  
Takashi Goto ◽  
Y. Hosokoshi ◽  
Kanryu Inoue ◽  
F. Iwahori ◽  
...  
Keyword(s):  
Phase Transition ◽  
Chain Structure ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Magnetic Viscosity ◽  
The One

Paraelektrische Resonanz und dielektrische Dispersion von Wasser in Beryll-Einkristallen / Paraelectric Resonance and Dielectric Dispersion of Water in Beryl Single Crystals

1974 ◽  
Vol 29 (11) ◽  
pp. 1558-1571
Author(s):  
H.-J. Rehm
Keyword(s):  
Electric Fields ◽  
Resonance Effect ◽  
Theoretical Description ◽  
Tunnel Effect ◽  
Zero Field ◽  
Zero Field Splitting ◽  
A Value ◽  
Axis Parallel ◽  
Electric Dipoles ◽  
The One

Paraelectric resonance spectra of beryl crystals are observed in the X-band region between 5 and 20 kV/cm under the condition that the external electric field F[101̅0]. Additional dielectric measurements show, that the paraelectric centres are the monomeric water molecules in the beryl cavities. For water dipoles in beryl only two orientations of the molecular a-axis relative to the crystal C6-axis are possible, and only those with their a-axis parallel to the C6-axis contribute to the paraelectric resonance effect. The electric moment vector µ of these latter molecules may rotate in the (0001)-crystal plane, i. e. around their own a-axis, and has a value of (1.9 ± 0.2) D. A theoretical description of paraelectric resonance is presented for a simplified model: the electric dipoles have 6 equivalent equilibrium positions along the [101̅0]-directions, tunnel effect and external electric fields remove the site degeneracy and we observe a molecular Stark splitting. We calculate a value of (2.0 ± 0.4) GHz for the zero-field splitting in the one-parameter Hamiltonian model.

A smart sensing Zn (Ⅱ) coordination polymer based on a new viologen ligand exhibiting photochromic and thermochromic and multiple solid detection properties

2021 ◽  
Author(s):  
Heyi Zhang ◽  
Fangyuan He ◽  
Xiaonan Li ◽  
Zhi-Hui Wang ◽  
Hong Zhang
Keyword(s):  
Electron Transfer ◽  
Coordination Polymer ◽  
Self Assembly ◽  
Chain Structure ◽  
The Self ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Smart Sensing

Through the self-assembly of 1,1'-bis(3-cyanobenzyl)-[4,4'-bipyridine] dichloride ligand, m-H2BDC and Zn(NO3)2·6H2O, a novel one-dimensional chain structure multifunctional coordination polymer was successfully synthesized. Due to electron transfer during irradiation and heating to...

Luminescent and magnetic bifunctional coordination complex based on a chiral tartaric acid derivative and europium

2019 ◽  
Vol 75 (9) ◽  
pp. 1220-1227 ◽  
Author(s):  
Mei-rong Han ◽  
Shao-dong Li ◽  
Ling Ma ◽  
Bang Yao ◽  
Si-Si Feng ◽  
...  
Keyword(s):  
Tartaric Acid ◽  
Complex I ◽  
Coupling Parameter ◽  
Chain Structure ◽  
Magnetic Behaviour ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Carboxylate Groups ◽  
The Eu

A new mononuclear europium complex incorporating the (+)-di-p-toluoyl-D-tartaric acid (D-H2DTTA) ligand, namely, catena-poly[tris{μ2-3-carboxy-2,3-bis[(4-methylphenyl)carbonyloxy]propanoato}tris(methanol)europium(III)], [Eu(C20H17O8)3(CH3OH)3] n , (I), has been synthesized and characterized by IR spectroscopy, elemental analysis, powder X-ray diffraction and single-crystal X-ray diffraction analysis. The structure analysis indicates that complex (I) crystallizes in the trigonal space group R3 and exhibits an infinite one-dimensional chain structure, in which the Eu3+ ion is surrounded by six O atoms from six D-HDTTA− ligands and three O atoms from three coordinated methanol molecules, thus forming a tricapped trigonal prism geometry. The D-H2DTTA ligand is partially deprotonated and adopts a μ1,6-coordination mode via two carboxylate groups to link adjacent Eu3+ ions, affording an infinite one-dimensional propeller-shaped coordination polymer chain along the c axis, with an Eu...Eu distance of 7.622 (1) Å. Moreover, C—H...π interactions lead to the formation of helical chains running along the c axis and the whole structure displays a snowflake pattern in the ab plane. The circular dichroism spectrum confirms the chirality of complex (I). The solid-state photoluminescence properties were also investigated at room temperature and (I) exhibits characteristic red emission bands derived from the Eu3+ ion (CIE 0.63, 0.32), with a reasonably long lifetime of 0.394 ms, indicating effective energy transfer from the ligand to the metal centre. In addition, a magnetic investigation reveals single-ion magnetic behaviour. The spin-orbit coupling parameter (λ) between the ground and excited states is fitted to be 360 (2) cm−1 through Zeeman perturbation. Therefore, complex (I) may be regarded as a chiral optical-magneto bifunctional material.

Preparation and Structural Characterization of Chain Ni (II) Coordination Polymer Material

2011 ◽  
Vol 322 ◽  
pp. 369-372
Author(s):  
Zhi Xiang Ji
Keyword(s):  
Coordination Polymer ◽  
Polymer Material ◽  
Chain Structure ◽  
Monoclinic Space Group ◽  
Dimensional Chain ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
A Chain

A chain Ni (II) coordination polymer material was prepared and characterized by elemental analysis and single-crystal X-ray diffraction. It crystallizes in monoclinic, space group C2/c with a = 1.24348(13) nm, b = 1.29477(12) nm, c = 1.51480(17) nm and Dc = 1.401 g•cm-3. The results of structural analysis indicated that each Ni (II) ion forms six-coordinated with nitrogen atoms of pyridine and thiocyanate, and the Ni (II) coordination polymer material formed one dimensional chain structure by the interaction of pyridine rings.

Electronic and Resonance Raman Spectra of Some New Mixed-Valence Compounds of Pt and Pd with a Metal-Halide Chain

1980 ◽  
Vol 35 (6) ◽  
pp. 676-679 ◽  
Author(s):  
G. C. Papavassiliou ◽  
D. Layek
Keyword(s):  
Raman Spectra ◽  
Linear Chain ◽  
Mixed Valence ◽  
Resonance Raman ◽  
Chain Structure ◽  
One Dimensional ◽  
Resonance Raman Spectra ◽  
The One ◽  
Mixed Valence Compounds ◽  
Linear Chain Structure

Abstract The electronic and resonance Raman spectra of new mixed-valence compounds of the type M2ʹ[M(L)X3][M(L)X5], where Mʹ = K, NH4, M = Pt or Pd, L = NH3 or pyridine, and X = Cl, Br or I, have been studied. The single-crystal polarized reflectance spectra indicate the one-dimensional semiconductor behaviour. The polarized resonance Raman spectra confirm the --M(II)--X-M(IV)-X linear chain structure, which is in accordance with the X-ray results. The polarization of M-N bands can be explained by the Snyder's theory (1971).

ChemInform Abstract: K2Ca4[(UO2)(Si2O7)2]: A Uranyl Silicate with a One-Dimensional Chain Structure.

ChemInform ◽  
2015 ◽  
Vol 46 (45) ◽  
pp. no-no
Author(s):  
Chia-Lin Liu ◽  
Hsin-Kuan Liu ◽  
Wen-Jung Chang ◽  
Kwang-Hwa Lii
Keyword(s):  
Chain Structure ◽  
Dimensional Chain ◽  
One Dimensional

catena-Poly[[bis(1,3-propylenediamine)zinc(II)]-μ-naphthalene-2,6-dicarboxylato-κ2 O 2:O 6]

2006 ◽  
Vol 62 (4) ◽  
pp. m736-m737
Author(s):  
Rong Yu ◽  
Ya-Qi Jiang ◽  
Zhao-Xiong Xie
Keyword(s):  
Dicarboxylic Acid ◽  
Title Compound ◽  
Chain Structure ◽  
Dimensional Chain ◽  
Distorted Octahedral Environment ◽  
One Dimensional ◽  
Octahedral Environment ◽  
Distorted Octahedral

The title compound, [Zn(C12H6O4)(C3H10N2)2] n , has been prepared from zinc(II), naphthalene-2,6-dicarboxylic acid (H2napdc) and 1,3-propylenediamine (pren). The Zn atom lies on a crystallographic centre of symmetry and is coordinated by two monodentate naphthalene-2,6-dicarboxylate ligands and two chelating 1,3-propylenediamine ligands in a distorted octahedral environment. The naphthalene-2,6-dicarboxylate ligands link the Zn atoms, forming a one-dimensional chain structure.

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