KNa3Mn7(PO4)6: 2D spin-frustrated magnetic material with a diamond-like chain structure

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21559-21562 ◽  
Author(s):  
Wenbin Guo ◽  
Zhangzhen He ◽  
Suyun Zhang ◽  
Ming Yang ◽  
Yingying Tang ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Chain Structure ◽  
Coordination Environment ◽  
Oxygen Coordination

Mn sites have multiple polyhedra in an oxygen-coordination environment, forming diamond-like chains along the a-axis, in which triangles are constructed in the chains.

scholarly journals Systematic empirical analysis of calcium–oxygen coordination environment by calcium K-edge XANES

2004 ◽  
Vol 6 (1) ◽  
pp. 188-192 ◽  
Author(s):  
F. E. Sowrey ◽  
L. J. Skipper ◽  
D. M. Pickup ◽  
K. O. Drake ◽  
Z. Lin ◽  
...  
Keyword(s):  
Empirical Analysis ◽  
Coordination Environment ◽  
Oxygen Coordination

Tuning magnetic anisotropy by interfacially engineering the oxygen coordination environment in a transition metal oxide

2016 ◽  
Vol 15 (4) ◽  
pp. 432-437 ◽  
Author(s):  
Daisuke Kan ◽  
Ryotaro Aso ◽  
Riko Sato ◽  
Mitsutaka Haruta ◽  
Hiroki Kurata ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Magnetic Anisotropy ◽  
Transition Metal Oxide ◽  
Coordination Environment ◽  
Oxygen Coordination

scholarly journals Effect of the oxygen coordination environment of Ca–Mn oxides on the catalytic performance of Pd supported catalysts for aerobic oxidation of 5-hydroxymethyl-2-furfural

2019 ◽  
Vol 9 (23) ◽  
pp. 6659-6668 ◽  
Author(s):  
Jie Yang ◽  
Haochen Yu ◽  
Yanbing Wang ◽  
Fuyuan Qi ◽  
Haodong Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Charge Transfer ◽  
Active Sites ◽  
Supported Catalysts ◽  
Aerobic Oxidation ◽  
Oxygen Adsorption ◽  
Catalytic Performance ◽  
Coordination Environment ◽  
Oxygen Coordination ◽  
Mn Oxides

Pd/CaMn2O4 provides ideal active sites for oxygen adsorption and desorption, resulting in the promoted charge transfer ability and catalytic activity.

catena-Poly[[[2-(2-pyridyl)-1H-benzimidazole]cobalt(II)]-μ-benzene-1,4-dicarboxylato]

2007 ◽  
Vol 63 (11) ◽  
pp. m2726-m2726 ◽  
Author(s):  
Chang-Kun Xia ◽  
Wen Wu ◽  
Qiu-Yun Chen ◽  
Ji-Min Xie
Keyword(s):  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Three Dimensional ◽  
Chain Structure ◽  
Octahedral Coordination ◽  
Pyridyl Ring ◽  
Zigzag Chain ◽  
Coordination Environment ◽  
Π Interactions

In the title coordination polymer, [Co(C8H4O4)(C12H9N3)] n , the CoII atom exists in an octahedral coordination environment formed by four carboxylate O atoms from two benzene-1,4-dicarboxylate ligands, and two N atoms from the 2-(2-pyridyl)benzimidazole ligand. Bridging by the benzene-1,4-dicarboxylate ligand leads to a zigzag chain structure, and intermolecular N—H...O hydrogen bonds as well as π–π interactions between the pyridyl ring and the benzene ring of the 2-(2-pyridyl)benzimidazole ligand (centroid–centroid distances = 3.678 and 3.697 Å) link the chains into a three-dimensional framework.

Synthesis, Structural Characterization and Photoluminescence of Six-Coordinated Zn(II) Complex Material

2011 ◽  
Vol 321 ◽  
pp. 63-66
Author(s):  
Li Hua Wang
Keyword(s):  
Crystal Packing ◽  
Fluorescence Emission ◽  
Chain Structure ◽  
X Ray Diffraction ◽  
Coordination Environment ◽  
Complex Material ◽  
One Dimensional ◽  
Distorted Octahedral ◽  
Pyrazinecarboxylic Acid ◽  
Distorted Octahedral Coordination Environment

Six-coordinated Zn (II) complex material {bis[5-methyl-2-pyrazinecarboxylic acid] Zinc(II)} was synthesized and determined by single-crystal X-ray diffraction, The results of crystal structure show that Zn (II) complex material crystallizes in a triclinic system, the Zn2+ ion is in a distorted octahedral coordination environment. In the crystal packing, the molecules form a one-dimensional chain structure by O-H•••O hydrogen bonds and π-π interaction of pyrazine rings. The photoluminescence of the Zn(II) complex material was tested, the result shows that the complex displays a fluorescence emission maximum at 525 nm.

ChemInform Abstract: KNa3Mn7(PO4)6: 2D Spin-Frustrated Magnetic Material with a Diamond-Like Chain Structure.

ChemInform ◽  
2014 ◽  
Vol 45 (40) ◽  
pp. no-no
Author(s):  
Wenbin Guo ◽  
Zhangzhen He ◽  
Suyun Zhang ◽  
Ming Yang ◽  
Yingying Tang ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Chain Structure

Structural Assessment and Catalytic Consequences of the Oxygen Coordination Environment in Grafted Ti−Calixarenes

2007 ◽  
Vol 129 (5) ◽  
pp. 1122-1131 ◽  
Author(s):  
Justin M. Notestein ◽  
Leandro R. Andrini ◽  
Vitaly I. Kalchenko ◽  
Felix G. Requejo ◽  
Alexander Katz ◽  
...  
Keyword(s):  
Structural Assessment ◽  
Coordination Environment ◽  
Oxygen Coordination

scholarly journals Synthesis and crystal structure of a one-dimensional chain-like strontium(II) coordination polymer built of N-methyldiethanolamine and isobutyrate ligands

2021 ◽  
Vol 77 (7) ◽  
pp. 703-707
Author(s):  
Maximilian Seiss ◽  
Sebastian Schmitz ◽  
Martin Börner ◽  
Kirill Yu. Monakhov
Keyword(s):  
Coordination Polymer ◽  
Isobutyric Acid ◽  
Chain Structure ◽  
Polymeric Chain ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
One Pot ◽  
Coordination Environment ◽  
One Dimensional ◽  
The One

The one-dimensional coordination polymer (I) [Sr(ib)2(H2mda)] n (Hib = isobutyric acid, C4H8O2, and H2mda = N-methyldiethanolamine, C5H13NO2), namely, catena-poly[[(N-methyldiethanolamine-κ3 O,N,O′)strontium(II)]-di-μ2-isobutyrato-κ3 O,O′:O;κ3 O:O,O′], was prepared by the one-pot aerobic reaction of [Zr6O4(OH)4(ib)12(H2O)]·3Hib with Sr(NO3)2 and H2mda in the presence of MnCl2 and Et3N in acetonitrile. The use of MnCl2 is key to the isolation of I as high-quality colorless crystals in good yield. The molecular solid-state structure of I was determined by single-crystal X-ray diffraction. Compound I crystallizes in the monoclinic space group P21/c and shows a one-dimensional polymeric chain structure. Each monomeric unit of this coordination polymer consists of a central SrII ion in the NO8 coordination environment of two deprotonated ib− ligands and one fully protonated H2mda ligand. The C and O atoms of the H2mda ligand were refined as disordered over two sets of sites with site occupancies of 0.619 (3) and 0.381 (3). Compound I shows thermal stability up to 130°C in air.

scholarly journals Field-induced single-ion magnet based on a quasi-octahedral Co(II) complex with mixed sulfur-oxygen coordination environment

2021 ◽  
Author(s):  
Denis V. Korchagin ◽  
Yaroslav E. Gureev ◽  
Elena A. Yureva ◽  
Gennady V. Shilov ◽  
Alexander V. Akimov ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Octahedral Complex ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Coordination Environment ◽  
X Ray ◽  
Oxygen Coordination

Synthesis and characterization of structure and magnetic properties of the quasi-octahedral complex (pipH2)[Co(TDA)2] 2H2O (I), (pipH22+ = piperazine dication, TDA2-= thiodiacetic anion) are described. X-ray diffraction studies reveal the first...

Binuclear and chain-structure zinc(II) complexes constructed from 3,4-dimethoxy-trans-cinnamic acid andN-donor coligands 4-(1H-pyrazol-3-yl)pyridine and 4,4′-bipyridine

2013 ◽  
Vol 69 (5) ◽  
pp. 471-475 ◽  
Author(s):  
Yi-Long Wang ◽  
Zhu-Jia Shao ◽  
Shao-Song Qian
Keyword(s):  
Cinnamic Acid ◽  
Complex I ◽  
Chain Structure ◽  
Hydrothermal Conditions ◽  
Coordination Polyhedra ◽  
Coordination Environment ◽  
Complex Ii ◽  
Pyramidal Geometry ◽  
Ligand Coordination ◽  
A Chain

3,4-Dimethoxy-trans-cinnamic acid (Dmca) reacts with zinc sulfate in the presence of 4-(1H-pyrazol-3-yl)pyridine (L1) or 4,4′-bipyridine (L2) under hydrothermal conditions to afford two mixed-ligand coordination complexes, namely tetrakis(μ-3,4-dimethoxy-trans-cinnamato-κ2O:O′)bis[[4-(1H-pyrazol-3-yl)pyridine]zinc(II)] heptahydrate, [Zn2(C11H11O4)4(C8H7N3)2]·7H2O or [Zn2(Dmca)4(L1)2]·7H2O, (I), andcatena-poly[[bis(3,4-dimethoxy-trans-cinnamato-κO)zinc(II)]-μ-4,4′-bipyridine-κ2N:N′], [Zn(C11H11O4)2(C10H8N2)]nor [Zn(Dmca)2(L2)]n, (II). The ZnIIcentres in the two compounds display different coordination polyhedra. In complex (I), the ZnIIcation is five-coordinated with a pseudo-square-pyramidal geometry, while in complex (II) the ZnIIcation sits on a twofold axis and adopts a distorted tetrahedral coordination environment. Complex (I) features a centrosymmetric binuclear paddle-wheel-like structure, while complex (II) shows a chain structure. This study emphasizes the significant effect of the coordination mode of both carboxylate-group andN-donor coligands on the formation of complex structures.

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