scholarly journals Synthesis, structure, semiconductive and photoluminescent properties of [{Eu(NC5H4COOH)3(H2O)2}(1.5ZnCl4)·(2H2O)]n

2009 ◽  
Vol 74 (7) ◽  
pp. 755-764 ◽  
Author(s):  
Wen-Tong Chen ◽  
Xiao-Niu Fang ◽  
Qiu-Yan Luo ◽  
Ya-Ping Xu
Keyword(s):  
Hydrothermal Reaction ◽  
Isonicotinic Acid ◽  
Luminescence Spectra ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
One Dimensional ◽  
X Ray ◽  
Organic Hybrid ◽  
Hybrid Complex ◽  
A Cell

A novel bimetallic 4f-3d metal-isonicotinic acid inorganic-organic hybrid complex [{Eu(NC5H4COOH)3(H2O)2}(1.5ZnCl4)?(2H2O)]n (1) was synthesized via a hydrothermal reaction and structurally characterized by single- crystal X-ray diffraction. Complex 1 crystallizes in the space group C2/c of the monoclinic system with eight formula units in a cell: a = 23.878(8) ?, b = 20.573(6) ?, c = 15.358(5) ?, ? = 127.276(5)?, V = 6003(3) ?3, C18H23Cl6EuN3O10Zn1.5, Mr = 904.11 g/mol, ? = 2.001 g/cm3, S = 1.077, ?(MoK?) = 3.846 mm-1, F(000) = 3536, R = 0.0270 and wR = 0.0672. Complex 1 has a characteristic, one-dimensional polycationic chain-like structure. A photoluminescent investigation revealed that the title complex displays intense emissions in the orange and red regions. The luminescence spectra show that the red emission is stronger than the orange emission. Optical absorption spectra of 1 revealed the presence of an optical gap of 3.56 eV.

A zinc(II) coordination polymer based on a flexible bis(benzimidazole) ligand: synthesis, crystal structure and fluorescence study

2020 ◽  
Vol 75 (12) ◽  
pp. 1005-1009
Author(s):  
Geng Zhang ◽  
Xinzhao Xia ◽  
Jianhua Xu ◽  
Lixian Xia ◽  
Cong Wang ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Reaction ◽  
Emission Peak ◽  
Stacking Interactions ◽  
X Ray Diffraction ◽  
Fluorescence Study ◽  
One Dimensional ◽  
X Ray ◽  
Π Stacking ◽  
Solid State Fluorescence

AbstractA new one-dimensional Zn(II) coordination polymer, {[ZnCl2(BBM)]·CH3OH}n (2,2-(1,4-butanediyl)bis-1,3-benzimidazole [BBM]), has been obtained from the hydrothermal reaction of zinc chloride with the flexible bis-benzimidazole ligand BBM and characterized by single-crystal X-ray diffraction, elemental analysis, IR and UV–vis spectra. Structural analysis has revealed that the BBM ligand connects the Zn(II) atoms to form a square-wave chain, which is further extended into supramolecular layers through hydrogen bonds and π···π stacking interactions. Solid-state fluorescence investigations showed that the Zn(II) coordination polymer has an emission peak at 381 nm upon excitation at 330 nm, which is attributed to ligand-centered luminescence. It is only slightly red shifted as compared to the ligand but partially quenched due to the strong π···π stacking interactions.

A New Type of Coordination Polymer: Hydrothermal Synthesis, Crystal Structure, and Magnetic Properties of [(C10H8N2)2CuBr]Cu3Br4

1998 ◽  
Vol 547 ◽  
Author(s):  
Brenda R. Cabrera ◽  
Ru-Ji Wang ◽  
Jing Li ◽  
Tan Yuen
Keyword(s):  
Hydrothermal Synthesis ◽  
Structure Type ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
One Dimensional ◽  
X Ray ◽  
Paramagnetic Behavior ◽  
Cell Dimensions ◽  
Susceptibility Study ◽  
New Type

AbstractGrowth of [(C10H8N2)2CuBr]Cu3Br4(I) crystals was achieved using the hydrothermal synthesis. Single crystal X-ray diffraction analysis shows that this compound crystallizes in monoclinic system, space group P21/c (no. 14) with four formula units in the unit cell. The cell dimensions are the following: a = 16.769(2) Å, b = 23.873(6) Å, c = 6.523(2) Å, β = 98.37(3)°, V = 2584(1) Å3. The title compound represents a new structure type. It consists of one-dimensional ribbons of 1[(Cu3Br4)] extending along the c-axis and discrete [(C10H8N2)2CuBr]+ complexes. The magnetic susceptibility study indicates a paramagnetic behavior due to the Cu(II) in the complex cations. The effective paramagnetic moment was calculated to be 2.20 μB from fitting the χ(T) data.

scholarly journals Insights into the multistep transformation of titanate nanotubes into nanowires and nanoribbons

2016 ◽  
Vol 34 (4) ◽  
pp. 691-702 ◽  
Author(s):  
Agnieszka Baszczuk ◽  
Marek Jasiorski ◽  
Beata Borak ◽  
Jerzy Wódka
Keyword(s):  
Treatment Duration ◽  
Hydrothermal Reaction ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Transmission Electron ◽  
Morphology And Structure ◽  
Different Types ◽  
Increasing Temperature

AbstractDifferent types of titanate one-dimensional nanostructured materials were synthesized and characterized using scanning and transmission electron microscopy, X-ray diffraction and Raman spectroscopy. The results presented in this work unquestionably showed dependence of morphology and structure of the titanate nanopowders on parameters of hydrothermal synthesis. It was found that nanotubes, nanowires and nanoribbons are three unavoidable kinetic products of hydrothermal reaction. Moreover, increasing temperature of reaction or hydrothermal treatment duration results in acceleration of nanotube-nanowire-nanoribbon transformation. However, the sequence of titanate morphology transformation is invariable. The detailed studies further revealed that the crystal structure of hydrothermally prepared nanotubes and nanowires are indistinguishable but the determination of the exact structure is practically impossible. Because of higher crystallinity, the structure of nanoribbons can be established. It was shown that it corresponds to the monoclinic layered trititanic acid H2Ti3O7 and is isostructural with sodium derivatives Na2_xHxTi3O7.nH20 (with x near 2).

Study on a Novel Structure of C21H9Ba2SrN3O12

2013 ◽  
Vol 834-836 ◽  
pp. 494-499
Author(s):  
Hai Xing Liu ◽  
Qing Liu ◽  
Xiao Ping Zhang ◽  
Quan Hua Fan ◽  
Lin Tong Wang ◽  
...  
Keyword(s):  
Hydrothermal Reaction ◽  
Crystal Packing ◽  
Hydrogen Bonding Interaction ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
X Ray ◽  
Cell Parameters ◽  
Compound C ◽  
Novel Structure ◽  
Bonding Interaction

In the title compound, C21H9Ba2N3O12Sr, is prepared from a hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The compound crystallize in Monoclinic, system with space group and cell parameters, C2/c, a=22.668 Å, b=10.937 Å, c=9.05 Å, α=γ=90°, β=90.582°, V=2243.6 Å3. The crystal packing is stabilized by O-H...O and O-H...N hydrogen bonding interaction.

scholarly journals One-dimensional lanthanide chain bridged by nitronyl nitroxide radical ligand: structure and magnetic properties

2020 ◽  
Vol 185 ◽  
pp. 04052
Author(s):  
Hui Yang Dong ◽  
Me Zhu
Keyword(s):  
Variable Temperature ◽  
Nitroxide Radical ◽  
Antiferromagnetic Interaction ◽  
Nitronyl Nitroxide ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
One Dimensional ◽  
X Ray ◽  
Ligand Structure ◽  
Radical Ligand

In order to synthesize the molecular magnetic material, the complex{Nd(hfac)3(NIT-5MeThien)}n(NIT-5MeThien=2-(5-Methyl-2ˊ-thienyl)-5--4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide) has been synthesized by the reaction using radical ligand and Nd(hfac)3•2H2O. X-ray diffraction analysis showed that the compound belongs to the monoclinic system and constituted by Nd(hfac)3 and NIT-5MeThien to obtain a one-dimensional chain which nitroxide radical acted as a bridged ligand through the N-O groups. Variable temperature magnetization of complex was shown the antiferromagnetic interaction between Nd(III) ion and nitroxide radical.

Synthesis and Structural Characterization of Zn(II) Coordination Polymer Material

2011 ◽  
Vol 282-283 ◽  
pp. 100-103 ◽  
Author(s):  
Li Hua Wang
Keyword(s):  
Hydrogen Bond ◽  
Coordination Polymer ◽  
Chain Structure ◽  
Title Complex ◽  
Dimensional Chain ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
One Dimensional ◽  
X Ray

In order to synthesize a new catalysis material, the title complex, [Zn(2,2’-bipyridine)(H2O)2(SO4)]n, was prepared and determined by X-ray diffraction. The results shows that the compound was crystallized in the monoclinic system, space groupC2/c, witha= 15.4304(14) Å,b= 12.7150(11) Å,c= 6.7068(5) Å,β= 102.103(10)º,V= 1286.61(19) Å3,Z= 4. The geometry of Zn(II) is a distortedcis-ZnN2O4octahedron. In the structure of the title complex, a one-dimensional chain structure is formed by hydrogen-bond.

A Zn(II) complex from an imidazolyl-thiophene ligand: synthesis, structural characterization, and fluorescence

2018 ◽  
Vol 73 (6) ◽  
pp. 407-411
Author(s):  
Hai-Wei Kuai ◽  
Tao Hu ◽  
Ding-Yun Jiang ◽  
Xiao-Hong Zhu
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Single Crystals ◽  
Network Structure ◽  
Structural Characterization ◽  
Hydrothermal Reaction ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
Space Group ◽  
X Ray

AbstractThe hydrothermal reaction of ZnSO4 with 2,5-di(1H-imidazol-4-yl)thiophene (L) at 100°C yields a new complex [Zn(L)(SO4)]n (1). Complex 1 has been characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental and thermogravimetric analyses. It crystallizes in the monoclinic system, space group P21/c with Z=4, and shows a (44.62) network structure. Complex 1 shows fluorescence. Single crystals of L·2H2O were accidentally obtained in hydrothermal reaction attempts of L with MnCl2 at 120°C.

scholarly journals Crystal Structure and Photophysical Properties of a Novel Dy-Hg Isonicotinic Acid Compound with One-Dimensional Chain-Like Cations

2020 ◽  
Vol 67 (4) ◽  
pp. 1111-1117
Author(s):  
Wen-Tong Chen
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Emission Band ◽  
Hydrothermal Reaction ◽  
Isonicotinic Acid ◽  
Photophysical Properties ◽  
Diffuse Reflectance Spectrum ◽  
Yellow Emission ◽  
Monoclinic System ◽  
One Dimensional

A novel Dy-Hg compound [Dy(HIA)3(H2O)2]2n · 2nHgCl4 · nHgCl5 · nH3O · 3nH2O (1; HIA = isonicotinic acid) was prepared through a hydrothermal reaction and characterized by X-ray diffraction. The compound crystallizes in the space group of C2/c of the monoclinic system. The crystal structure of compound 1 has one-dimensional (1-D) chain-like cations. A photoluminescence experiment with a solid-state sample revealed that this compound exhibits a yellow emission band at 575 nm and, this emission band shall come from the 4f electron 4F9/2 → 6H13/2 characteristic transfer of Dy3+ ions. The compound features CIE chromaticity coordinates of 0.5168 and 0.4824 in the yellow region. A UV-visible diffuse reflectance spectrum with a solid-state sample unveiled that this compound possesses a wide optical band gap of 3.39 eV.

Synthesis, structure and properties of a heterometallic 4f-5d complex [Sm(Hinic)3(H2O)2]n·(1.5nHgCl4)·(2nH2O)

2011 ◽  
Vol 76 (4) ◽  
pp. 223-234 ◽  
Author(s):  
Wentong Chen
Keyword(s):  
Magnetic Properties ◽  
Hydrothermal Reaction ◽  
Isonicotinic Acid ◽  
Title Complex ◽  
Luminescence Spectra ◽  
Optical Absorption Spectra ◽  
Structure And Properties ◽  
Red Emission ◽  
One Dimensional ◽  
Novel Complex

A novel complex with samarium and mercury [Sm(Hinic)3(H2O)2]n·(1.5nHgCl4)·(2nH2O) (1) (Hinic = pyridine-4-carboxylic acid, i.e. isonicotinic acid), has been synthesized via hydrothermal reaction and structurally characterized. Complex 1 is characteristic of a one-dimensional polycationic chain-like structure. Photoluminescent investigation reveals that the title complex displays interesting emissions in violet, blue, green, orange and red regions. The luminescence spectra show the stronger violet and blue emissions than the green, orange and red ones. The green, orange and red emission bands are attributed to the characteristic emissions of 4G5/2→6HJ (J = 5/2, 7/2, 9/2) of Sm3+ ions. Optical absorption spectra of 1 reveal the presence of a wide optical bandgap of 3.27 eV. The magnetic properties show that complex 1 exhibits antiferromagnetic-like interactions.

Synthesis, structural characterization, and fluorescence of a Cd(II) coordination polymer with N-donor ligands

2017 ◽  
Vol 72 (3) ◽  
pp. 189-192 ◽  
Author(s):  
Hai-Wei Kuai ◽  
Jing-Jing Xia ◽  
Xiao-Hong Zhu ◽  
Jing Chen
Keyword(s):  
Ir Spectroscopy ◽  
Coordination Polymer ◽  
Structural Characterization ◽  
Hydrothermal Reaction ◽  
Ammonium Hydroxide ◽  
Donor Ligands ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
X Ray ◽  
2D Network

Abstract The hydrothermal reaction of CdSO4 with 2,5-di(1H-imidazol-4-yl)thiophene (L) in the presence of ammonium hydroxide at 100°C gives rise to a new complex [Cd(L)(SO4)]n (1). Complex 1 has been characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental and thermogravimetric analyses. It crystallizes in the monoclinic system with the space group C2/c and shows a 2D network structure. Complex 1 can emit fluorescence.

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