First example of a Sn–C bond cleaved product in the reaction of Ph3SnOSnPh3 with carboxylic acids. 3D-Supramolecular network formation in the X-ray crystal structure of [Ph2Sn(OH)OC(O)(Rf)]2, Rf = 2,4,6-(CF3)3C6H2

2003 ◽  
pp. 862-863 ◽  
Author(s):  
Vadapalli Chandrasekhar ◽  
Selvarajan Nagendran ◽  
Kandasamy Gopal ◽  
Alexander Steiner ◽  
Stefano Zacchini
2015 ◽  
Vol 70 (9) ◽  
pp. 631-636 ◽  
Author(s):  
Huaixian Liu ◽  
Lin Sun ◽  
Huiliang Zhou ◽  
Peipei Cen ◽  
Xiaoyong Jin ◽  
...  

AbstractStarting with 1H-3-phenyl-5-(pyridin-2-yl)-1,2,4-triazole (1-Hppt), a Co(III) complex, [Co(ppt)3] (1), has been synthesized by reaction with CoF3 under hydrothermal conditions and characterized by its infrared spectrum and elemental analysis. The structure was determined by single-crystal and powder X-ray diffraction. Density functional theory (DFT) was employed to determine the optimized geometry and preferred conformation of the free ligand. A supramolecular network is formed via π–π stacking interactions. The conformation and geometry of the ligands correspond with the calculated results.


2013 ◽  
Vol 68 (9) ◽  
pp. 987-992 ◽  
Author(s):  
Yan Hua Fan ◽  
Lei Li ◽  
Shuai Chen ◽  
Rui Min Zhou ◽  
Yan Bai ◽  
...  

A polyoxometalate-based copper(II) inorganic-organic hybrid polymer [Cu(dpdo)2(H2O)4] [Na2(Mo8O26) (H2O)6] (dpdo) 2H2O (1) (dpdo=4,4’-bipyridine-N,N'-dioxide) has been synthesized and structurally characterized by IR spectroscopy, elemental analysis, and single-crystal X-ray analysis. The structure is based on two types of polymeric chains, the anionic one constructed by the coordination interaction between the [b-Mo8O26]4- cluster anions and [Na2]2+ units, and the cationic one formed through the coordination interaction of Cu(II) atoms and dpdo ligands. In addition, there are multiform hydrogen bonds and π … π interactions in a three-dimensional supramolecular network


2011 ◽  
Vol 66 (11) ◽  
pp. 1122-1126 ◽  
Author(s):  
Mohammad Hakimi ◽  
Zahra Mardani ◽  
Keyvan Moeini ◽  
Mao Minoura ◽  
Heidar Raissi

The ligand, 2-(2-(pyridin-2-yl)oxazolidin-3-yl)-N-(pyridin-2-ylmethylene)ethanamine, POPME, was prepared via microwave-supported Schiff base and oxazolidination reactions. The cadmium iodide complex [Cd2(POPME)(μ-I)2I2] was prepared and identified by elemental analysis, IR, Raman and 1H and 13C NMR spectroscopy and single-crystal X-ray diffraction. In the crystal structure two Cd(II) ions with coordination numbers four and six are bridged by two iodide anions. Cd1 and Cd2 have distorted octahedral CdI2N4 and tetrahedral CdI4 geometries, respectively.Weak intermolecular hydrogen bonds H・ ・ ・I and H・ ・ ・O stabilize the supramolecular network


Polyhedron ◽  
1995 ◽  
Vol 14 (17-18) ◽  
pp. 2419-2427 ◽  
Author(s):  
M.C. Barral ◽  
R. Jimenez-Aparicio ◽  
J.L. Priego ◽  
E.C. Royer ◽  
M.J. Saucedo ◽  
...  

2016 ◽  
Vol 11 (1) ◽  
pp. 3394-3403 ◽  
Author(s):  
Sonia Trabelsi ◽  
Thierry Roisnel ◽  
Houda Marouani

The structure of bis(3-Phenylpropylammonium) dichromate(VI) was determined from X-ray diffraction data. The compound crystallizes in the monoclinic system (space group P21/c) with the lattice parameters: a = 7.9379(2) Å, b = 36.2439(16) Å, c = 7.5753(3) Å; B = 96.069(2); V= 2167.20(14) Å3 and Z = 4. The structure was solved from 4959 independent reflections with R = 0.043 and Rw = 0.105. The structure consists of discrete dichromate anions (Cr2O72-) with eclipsed conformation stacked in layers parallel to (a, c) plane at y = 0 and ½. These anions are linked via the 3-phenylpropylammonium cations by N—H…O and C—H…O hydrogen bonds, forming a two-dimensional supramolecular network. Crystal structure and spectroscopic studies are reported for the bis(3-phenylpropylammonium) dichromate(VI).


1984 ◽  
Vol 37 (9) ◽  
pp. 1963 ◽  
Author(s):  
MP Hartshorn ◽  
RJ Martyn ◽  
J Vaughan

Chlorination of 4-chloro-2-methyl-6-nitrophenol (4) with chlorine in acetic acid containing concentrated hydrochloric acid gives the epimeric acyclic carboxylic acids (6) and (7). The structure of compound (6) was determined by X-ray crystal structure analysis. No such acyclic compounds are formed in similar chlorinations of 2,4-dichloro-6-nitrophenol (13a) or 2,4-dichloro-6-methylphenol (13b). The mode of formation of compounds (6) and (7) is discussed.


2019 ◽  
Vol 74 (3) ◽  
pp. 255-260
Author(s):  
Shahzad Sharif ◽  
Islam Ullah Khan ◽  
Onur Sahin ◽  
Nadia Jabeen ◽  
Saeed Ahmad ◽  
...  

AbstractAn octanuclear compound of cerium(III), [Ce8(Pydc)10(HPydc)4.22H2O].11H2O (1) (Pydc=pyridine-2,6-dicarboxylate anion) was prepared under mild solvothermal conditions and its crystal structure was determined by single-crystal X-ray diffraction. Three kinds of coordination environments are observed, which include: [Ce(Pydc)3], [Ce(Pydc)(H2O)4(O,O)], and [Ce(H2O)7(O,O)]. Each cerium atom in 1 is nine-coordinated but two different geometries are found. The Ce1 and Ce2 atoms exhibit a nearly tricapped trigonal prismatic CeN3O6 geometry, while Ce3 and Ce4 possess CeNO8 and CeO9 coordination polyhedra, which approximate to slightly distorted mono-capped square antiprisms having 12 triangular faces. The Pydc ligands adopt tri-, tetra-, and penta-coordination modes through tridentate chelating and, μ2 and μ3-bridging modes, respectively. The clusters are joined by O–H···O hydrogen bonds to generate 3D supramolecular network. Magnetic susceptibility measurements for 1 indicate that the χm values obey the Curie-Weiss law. The overall magnetic behavior is typical for the presence of antiferromagnetic exchange coupling interactions between the cerium(III) ions.


2008 ◽  
Vol 2008 (11) ◽  
pp. 626-629
Author(s):  
LiHong Tian ◽  
ShiZhong Liu ◽  
NingHai Hu ◽  
HengQing Jia

A novel Dawson-type polyoxometalate supramolecular architecture of the formula [4,4′-H2bipy]2.5·[4,4′-Hbipy]·[P2W18O62]·6.25H2O (4,4′-bipy = 4,4′-bipyridine) has been hydrothermally synthesised and characterised by means of elemental analysis, IR, CV and X-ray single-crystal diffraction. X-ray crystallography indicates that the title compound consists of Dawson-type polyoxoaions [P2W18O62]6-, water molecules and 4,4′-bipy units. The polyoxoanion clusters together with 4,4′-bipy units and water molecules to construct the three-dimensional supramolecular network through hydrogen bonds. The crystal structure analyses reveal that water molecules and 4,4′-bipy units play the important role on the packing arrangements of crystals. Cyclic voltammetry shows that the title compound exhibits three chemically reversible steps


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