scholarly journals Synthesis, Structure, and Catalytic Activity of A New Mn(II) Complex with 1,4-Phenylenediacetic Acid and 1,10-Phenanthroline

2018 ◽  
Vol 13 (1) ◽  
pp. 1 ◽  
Author(s):  
Li Hua Wang ◽  
Peng Fei Li
Keyword(s):  
Catalytic Activity ◽  
Maximum Yield ◽  
Chain Structure ◽  
Water Molecules ◽  
Single Crystal Diffraction ◽  
One Pot ◽  
Complex Molecules ◽  
X Ray ◽  
1D Chain ◽  
Coordinated Water

A new Mn(II) complex material has been synthesized by one-pot reaction of Mn(CH3COO)2·4H2O, 1,4-phenylenediacetic (H2L), 1,10-phenanthroline (phen), and NaOH in water/ethanol (v:v = 1:1) solution. The structure of Mn(II) complex was determined by elemental analysis, FTIR, and X-ray single-crystal diffraction analysis. The results reveal that Mn(II) complex was constructed by a monodentate 1,4-phenylenediacetate ligand, two phen ligands, a coordinated water molecule, 0.5 uncoordinated 1,4-phenylenediacetate ligand and six uncoordinated water molecules. The complex molecules form 1D chain structure by the π-π interaction of phen molecules. The catalytic activity of Mn(II) complex for coupling of benzaldehyde, phenylacetylene and piperidine in 1,4-dioxane has also been  investigated  and the maximum yield of propargylamine is up to 72.2 % after 12 h at 120 oC. Copyright © 2017 BCREC Group. All rights reservedReceived: 5th March 2017; Revised: 7th June 2017; Accepted: 12nd July 207; Available online: 22nd January 2018; Published regularly: 2nd April 2018How to Cite: Wang, L.H., Li, P.F. (2018). Synthesis, Structure, and Catalytic Activity of A New Mn(II) Complex with 1,4-Phenylenediacetic Acid and 1,10-Phenanthroline. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (1): 1-6 (doi:10.9767/bcrec.13.1.975.1-6) 

A Pyrazine-Bridged Ni(II) Coordination Polymer

2002 ◽  
Vol 57 (11) ◽  
pp. 1191-1194 ◽  
Author(s):  
Chirantan Roy Choudhury ◽  
Subrata Kumar Dey ◽  
Sutapa Sen ◽  
Bappaditya Bag ◽  
Samiran Mitra ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Chain Structure ◽  
Water Molecules ◽  
Polymeric Complex ◽  
X Ray Diffraction ◽  
Intermolecular Hydrogen Bonds ◽  
X Ray ◽  
Elemental Analyses ◽  
Coordinated Water ◽  
Nitrate Anions

The single pyrazine-bridged polymeric complex {[Ni(pyz)(H2O)4](NO3)2.2H2O}n has been synthesised and characterised by elemental analyses, IR and UV-vis spectra, and a single-crystal X-ray diffraction study. The coordination around the Ni centre is perfectly octahedral. The Ni(H2O)4 coordination planes are bridged by pyrazine ligands forming an infinite chain structure. Two nitrate anions and two water molecules exist in the lattice and are linked by intermolecular hydrogen bonds to the coordinated water molecules.

Crystal Structure of Na(I) Complex with 1,5-Naphthalenedisulfonate

2013 ◽  
Vol 830 ◽  
pp. 185-188
Author(s):  
Li Hua Wang ◽  
Zhi Xiang Ji
Keyword(s):  
Crystal Structure ◽  
Chain Structure ◽  
Water Molecules ◽  
Local Geometry ◽  
Dimensional Chain ◽  
Single Crystal Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Octahedral Environment ◽  
Distorted Octahedral

A new Na (I) complex, [Na (H2O)5(DMF)]·(L) (L=1,5-naphthalenedisulfonate) has been obtained in the CH3CH2OH and a little DMF solution. The complex was characterized by X-ray single crystal diffraction analysis. The results showed that the local geometry around central Na (I) ion can be described a distorted octahedral environment which connected by five water molecules and one DMF molecule. The complex formed one dimensional chain structure through intramolecule and intermolecule hydrogen bonds and π-π stacking.

Study on Crystal Structure and Thermal Stability of Hexaaquanickel (II) Bis[4-amino-3-methyl-benzenesulfonate]

2013 ◽  
Vol 643 ◽  
pp. 64-67
Author(s):  
Li Hua Wang
Keyword(s):  
Self Assembly ◽  
Water Molecules ◽  
X Ray Diffraction ◽  
Complex Molecules ◽  
X Ray ◽  
Dimensional Network ◽  
Distorted Octahedral ◽  
Coordinated Water ◽  
Light Green ◽  
Thermal Stability Of

Light green crystals of the Ni (II) complex material, [Ni(H2O)6](C14H16N2O6S2), were obtained by the self-assembly of Ni(H2O)6·6H2O, 4-amino-3-methyl-benzenesulfonic acid and NaOH. The result of X-ray diffraction shows that each Ni (II) atom is six-coordinated in a distorted octahedral environment by six oxygen atoms from the water molecules. The complex molecules are connected by hydrogen bonds to form two dimensional network structure. The thermal analysis shows that the complex has a enothermic peak at 302 C, indicating that coordinated water molecules are in the complex.

Preparation and X-Ray Crystal Structure of Layered Ca(II) Complex Material

2011 ◽  
Vol 282-283 ◽  
pp. 108-111
Author(s):  
Xi Shi Tai
Keyword(s):  
Crystal Packing ◽  
Diffraction Method ◽  
Chain Structure ◽  
Single Crystal Diffraction ◽  
Monoclinic System ◽  
Complex Molecules ◽  
Complex Material ◽  
One Dimensional ◽  
X Ray ◽  
Packing Interaction

A novel Ca(II) complex material was prepared by reaction of O-nitrobenzaldehyde- 3-amino-benzenesulfonic acid with Ca(ClO4)2, and characterized by X-ray single crystal diffraction method. The analytical results shows that the Ca(II) complex was crystallized in the monoclinic system, space group P2(1)/c, with a = 17.515(10) Å, b = 7.019(4) Å, c = 13.853(8) Å, β = 104.855(10) º, V = 1646.3(17) Å3, Z = 2. The geometry of Ca(II) is a slightly distorted dodecahedrall geometry. In the crystal packing, the complex molecules form layered structure by the π-π packing interaction, and the molecules form a one-dimensional chain structure by hydrogen bonds.

Synthesis, Fluorescence Properties of 2-Acetyl-2'-Chloroacetanilide with Rare Earth Nitrates Complexes

2011 ◽  
Vol 219-220 ◽  
pp. 574-577
Author(s):  
Xi Shi Tai ◽  
Lin Tong Wang
Keyword(s):  
Rare Earth ◽  
Rare Earth Ions ◽  
Fluorescence Properties ◽  
Water Molecules ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Rare Earth Nitrates ◽  
Ft Ir ◽  
Coordinated Water ◽  
The Eu

The reaction of 2-acetyl-2'-chloroacetanilide (L) with rare earth nitrates in CH3CH2OH followed by recrystallization in CH3CH2OH gave rise to colorless block crystals materials. The complexes and ligand were analyzed by FAB, elemental analysis(C, H, N), FT-IR spectra, TG-DTA, molar conductivity and X-ray single crystal diffraction. The fluorescence properties of ligand and the Eu (Ⅲ) complex also have been investigated. The results of crystal structure and spectral data show that the rare earth ions coordinated with oxygen and nitrogen atoms of the ligand, the nitrate and coordinated water molecules. The Eu (Ⅲ) complex material shows characteristic red emissions.

New insights about the host–guest chemistry of the tungsten oxo complex of calix[4]arene, and novel "one pot" difunctionalizations of calix[4]arene using tetrachlorometal(VI) oxide (M = Mo, W)

2004 ◽  
Vol 82 (10) ◽  
pp. 1452-1461 ◽  
Author(s):  
Pascal Mongrain ◽  
Jasmin Douville ◽  
Jonathan Gagnon ◽  
Marc Drouin ◽  
Andreas Decken ◽  
...  
Keyword(s):  
Water Molecule ◽  
Lewis Acid ◽  
Chemical Shifts ◽  
Strong Interactions ◽  
Ir Absorption ◽  
One Pot ◽  
X Ray ◽  
Strong Lewis Acid ◽  
Successful Removal ◽  
Coordinated Water

The strong Lewis acid tungsten oxo complex of calix[4]arene can be obtained in both hydrated and non-hydrated forms. This complex coordinates a water molecule inside the cavity via strong O···W interactions with relatively short distances of 2.284(4) and 2.329(2) Å for the tungsten oxo complex of calix[4]arene··H2O·aniline (1), and the tungsten oxo complex of calix[4]arene·H2O·toluene (2·toluene), respectively. The strong interactions are also deduced by the relatively high H2O elimination temperature observed by TGA and DSC (above 200 °C). The coordinated water molecule inside the calix[4]arene cavity is characterized by a strong IR absorption at 3616 cm–1, and a narrow resonance at ~1.2 ppm (the chemical shifts of the uncoordinated water are 1.55 and 1.60 ppm in C6D6 and CDCl3, respectively). This water molecule gives rise to H-bonds with aniline in 1. The tungsten oxo complex of 5,11,17,23-tetrabromocalix[4]arene (4), also binds H2O as the characteristic signatures are observed. The successful removal of H2O in 2, is performed under mild conditions using bis(tetrahydrofuran)-uranyl nitrate as a competitive Lewis acid. When this reaction is performed in acetonitrile, butyronitrile or tert-butylnitrile, the corresponding tungsten oxo complexes of calix[4]arene·acetonitrile (3), ·butyronitrile (5), and ·tert-butylnitrile (6) are obtained. The use of uranyl as a H2O abstractor is unprecedented. The X-ray structure of 3 consists of a tungsten oxo complex of calix[4]arene coordinated by an acetonitrile molecule (d(W···N = 2.412(2) Å). The tetra-5,11,17,23-choromethyl-25,26,27,28-tetrahydroxycalix[4]arene reacts with M(O)Cl4 (M = Mo, W) in a 1:1 stoichiometry, via a tetra Friedel–Crafts addition of benzene or toluene, followed by a lower-rim complexation of the metal oxide, to form "flower-shaped" calix[4]arenes. This "one pot" double functionalization is unprecedented.Key words: calix[4]arene, tungsten, molybdenum, X-ray, host–guest, Friedel–Crafts, Lewis acid, uranyl, DSC, TGA.

scholarly journals One-pot tandem cyclization of enantiopure asymmetric cis-2,5-disubstituted pyrrolidines: Facile access to chiral 10-heteroazatriquinanes

2013 ◽  
Vol 9 ◽  
pp. 265-269 ◽  
Author(s):  
Ping-An Wang ◽  
Sheng-Yong Zhang ◽  
Henri B Kagan
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Single Crystal Diffraction ◽  
One Pot ◽  
X Ray ◽  
Tandem Cyclization

A series of chiral 10-heteroazatriquinanes were synthesized from enantiopure asymmetric cis-2,5-disubstituted pyrrolidines through a one-pot tandem cyclization procedure. The structures and configurations of these new chiral 10-heteroazatriquinanes are confirmed by X-ray single-crystal diffraction analysis.

scholarly journals Cu(II) and Fe(III) Complexes Derived from N-Acetylpyrazine-2-Carbohydrazide as Efficient Catalysts Towards Neat Microwave Assisted Oxidation of Alcohols

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1053 ◽  
Author(s):  
Manas Sutradhar ◽  
Tannistha Roy Barman ◽  
Armando J. L. Pombeiro ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Catalytic Activity ◽  
Ir Spectroscopy ◽  
Maximum Yield ◽  
Catalytic Efficiency ◽  
Benzyl Alcohols ◽  
X Ray ◽  
X Ray Crystallography ◽  
Microwave Assisted ◽  
Tert Butyl Hydroperoxide ◽  
Oxidation Of Alcohols

The mononuclear Cu(II) complex [Cu((kNN′O-HL)(H2O)2] (1) was synthesized using N-acetylpyrazine-2-carbohydrazide (H2L) and characterized by elemental analysis, IR spectroscopy, ESI-MS and single crystal X-ray crystallography. Two Fe(III) complexes derived from the same ligand viz, mononuclear [Fe((kNN′O-HL)Cl2] (2) and the binuclear [Fe(kNN′O-HL)Cl(μ-OMe)]2 (3) (synthesized as reported earlier), were also used in this study. The catalytic activity of these three complexes (1–3) was examined towards the oxidation of alcohols using tert-butyl hydroperoxide (TBHP) as oxidising agent under solvent-free microwave irradiation conditions. Primary and secondary benzyl alcohols (benzyl alcohol and 1-phenylethanol), and secondary aliphatic alcohols (cyclohexanol) were used as model substrates for this study. A comparison of their catalytic efficiency was performed. Complex 1 exhibited the highest activity in the presence of TEMPO as promoter for the oxidation of 1-phenylethanol with a maximum yield of 91.3% of acetophenone.

One-Dimensional Ag(I) Organometallic Coordination Polymers Generated from a Fulvene-Based Ligand

2006 ◽  
Vol 59 (3) ◽  
pp. 207 ◽  
Author(s):  
Peng Wang ◽  
Jian-Ping Ma ◽  
Ru-Qi Huang ◽  
Yu-Bin Dong
Keyword(s):  
Coordination Chemistry ◽  
Coordination Polymers ◽  
Chain Structure ◽  
One Pot ◽  
Trans Conformation ◽  
One Dimensional ◽  
X Ray ◽  
Triclinic System ◽  
Polymeric Complexes ◽  
Single Crystal Analysis

A new fulvene-based ligand L was synthesized and its coordination chemistry with Ag(i) ion has been investigated. Two novel Ag(i) polymeric complexes, [Ag2L2∙5.5(C6H6)]SbF6 (1) and [AgL∙2.5(C6H6)]SbF6 (2), were obtained by combination of L with AgSbF6 in one-pot reaction. X-Ray single-crystal analysis revealed that both 1 and 2 crystallize in triclinic system P1. In 1 and 2, the ligand L adopts a trans-conformation to bind the Ag(i) centres into a one-dimensional twin-chain structure through either Ag–O coordination or π–π interactions.

Assembly of Three Lanthanide Coordination Polymers from 2-(4-Carboxybenzyloxy) Benzoic Acid Ligand: Synthesis, Structure, and Fluorescent Properties

2020 ◽  
Vol 73 (1) ◽  
pp. 16
Author(s):  
Shu-Ju Wang ◽  
Yi-Hui Jiang ◽  
Han-Lin Wu ◽  
Li-Xin You ◽  
Gang Xiong ◽  
...  
Keyword(s):  
Benzoic Acid ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Lanthanide Ions ◽  
Solvothermal Reaction ◽  
X Ray Diffraction ◽  
Fluorescent Properties ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
1D Chain

Three new coordination polymers, {[Ln(cbb)(Hcbb)(DMF)·H2O]n, Ln=Sm (1), Eu (2), Tb(3), H2cbb=2-(4-carboxybenzyloxy) benzoic acid, DMF=N,N-dimethylformamide}, have been synthesised by a solvothermal reaction and structurally characterised by infrared spectroscopy, elemental analysis, thermogravimetry analysis, and X-ray single-crystal diffraction. The results of single-crystal X-ray diffraction indicate that the coordination polymers 1–3 are isostructural, belong to a triclinic system, space group P-1, and show 1D chain structures through the H2cbb ligands connecting adjacent lanthanide ions. In addition, the fluorescence properties of polymers 1–3 were also investigated.

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