Synthesis, Characterization and Properties of Arylamine-Acetylene Bridged Tetrahedral Cobalt and Iron Carbonyl Clusters

2013 ◽  
Vol 750-752 ◽  
pp. 1750-1753
Author(s):  
Rui Jia ◽  
Hai Yan Xu ◽  
Qi Feng ◽  
Wen Bao Li ◽  
Bao Hua Zhu
Keyword(s):  
Optical Properties ◽  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
Iron Carbonyl ◽  
Cyclic Voltammogram ◽  
Cobalt Carbonyl ◽  
Carbonyl Clusters ◽  
Ft Ir ◽  
Tetrahedral Iron ◽  
Ft Ir Spectroscopy

Four new arylamine-acetylene bridged tetrahedral iron and cobalt carbonyl clusters, [Co2(CO)4(μ-CO)2(η2, μ-TMSCCPh)2N 1, [Fe2(CO)6(μ-CO)(η2, μ-TMSCCPh)NH(PhCC TMS)] 2, [(Co2(CO)6(η2, μ-TMSCCPh))33 and [(Fe2(CO)6(μ-CO)(η2, μ-TMSCCPh))2N(Ph CCTMS)] 4, were obtained by reactions of Co2(CO)8and Fe3(CO)12with the bis [4-((trimethylsilyl) ethynyl) phenyamine and tris [4-((trimethylsilyl) ethynyl) phenyamine compounds in suitable solvent, respectively. All clusters are confirmed by C/H elemental analysis, MS,1HNMR and FT-IR spectroscopy. Furthermore, the electrochemical and optical properties of some clusters were also determined by cyclic voltammogram (CV) analysis and UV-Vis spectra.

Ruthenium and Iron Carbonyl Clusters Catalyzed Reduction of N,N-dimethylbenzamide and N,N-diethyl-(3-methyl)benzamide

2011 ◽  
Vol 396-398 ◽  
pp. 2485-2488
Author(s):  
Bao Hua Zhu ◽  
Guo Hua Xu ◽  
Zhi Wei Xia
Keyword(s):  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
Iron Carbonyl ◽  
Carbonyl Cluster ◽  
Carbonyl Clusters ◽  
Excellent Yield ◽  
Ruthenium Carbonyl ◽  
Vis Spectroscopy

One new Ruthenium and one known Iron bimetallic carbonyl clusters containing triphos (1,1,1-tris(diphenylphosphinomethyl)ethane) ligand have been prepared as catalyst to study the reduction of amide to amine. All clusters were characterized by elemental analysis, 1HNMR, 31PNMR and IR spectroscopy. The reduction of N,N-dimethylbenzamide and N,N-diethyl-(3-methyl) benzamide catalyzed by Ru and Fe carbonyl clusters were investigated at 100 ~ 110 °C for 24 ~ 28h, polymethylhydrogensiloxane (PMHS) as reduction agent. The products were analysized using GC-MS, IR and UV-vis spectroscopy and an excellent yield (97%) of N,N-diethyl- (3-methyl)benzamine was obtained when using 3 mol% of bimetallic ruthenium carbonyl cluster as catalyst. The data of IR and UV-vis show that the frameworks of clusters are not changed remarkably during the reaction.

1,3,5-Tris[(trimethylstannyl)ethynyl]- 1,3,5-trimethyl-1,3,5-trisilacyclohexane

2016 ◽  
Vol 71 (1) ◽  
pp. 81-84 ◽  
Author(s):  
Eugen Weisheim ◽  
Hans-Georg Stammler ◽  
Norbert W. Mitzel
Keyword(s):  
Mass Spectrometry ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Elemental Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

AbstractThe reaction of 1,3,5-triethynyl-1,3,5-trimethyl- 1,3,5-trisilacyclohexane with (dimethylamino)trimethylstannane afforded 1,3,5-tris[(trimethylstannyl)ethynyl]- 1,3,5-trimethyl-1,3,5-trisilacyclohexane with tin-functionalised ethynyl groups. The compound was characterized by single-crystal X-ray diffraction, elemental analysis, mass spectrometry, NMR and FT-IR spectroscopy.

Synthesis, structure and magnetism of a new ionic pentanuclear iron cluster

2020 ◽  
Vol 76 (7) ◽  
pp. 690-694
Author(s):  
Qianjun Deng ◽  
Jiming Wang ◽  
Guangzhao Li ◽  
Shuhua Zhang
Keyword(s):  
Thermogravimetric Analysis ◽  
Ir Spectroscopy ◽  
Elemental Analysis ◽  
Synthesis Methods ◽  
X Ray Diffraction ◽  
Magnetic Studies ◽  
Iron Cluster ◽  
X Ray ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A new ionic pentanuclear FeIII cluster, namely, triethylazanium tetrakis(μ2-5-amino-1,2,3,4-tetrazolido)tetrakis(μ3-4-chloro-2-{[(1H-tetrazol-1-id-5-yl)imino]methyl}phenolato)di-μ3-oxido-pentairon(III) acetonitrile monosolvate monohydrate, (C6H16N)[Fe5(C8H4ClN5O)4(CH2N5)4O2]·CH3CN·H2O, was synthesized using microvial synthesis methods and characterized by elemental analysis, FT–IR spectroscopy, single-crystal X-ray diffraction and thermogravimetric analysis. Magnetic studies reveal that the complex displays dominant antiferromagnetic intracluster interactions between the FeIII ions through the μ3-oxide bridges.

Preparation of Cadmium Sulfide Nanostructures in Presence of Polyvinyl Alcohol and Polyvinylpyrrolidone as a Capping Agent and Investigation of Their Structural and Optical Properties

2018 ◽  
Vol 13 (10) ◽  
pp. 1454-1459 ◽  
Author(s):  
Yashar Azizian-Kalandaragh
Keyword(s):  
Optical Properties ◽  
Ir Spectroscopy ◽  
Polyvinyl Alcohol ◽  
Cadmium Sulfide ◽  
Capping Agent ◽  
Structural And Optical Properties ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
The Mean ◽  
Ft Ir Spectroscopy

In this research, cadmium sulfide nanostructures have been prepared by an ultrasound-assisted method in presence of polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP) as capping agents. The effects of two different capping agents on the structural and optical properties of cadmium sulfide nanostructures have been investigated by X-ray diffraction (XRD), UV-Vis spectroscopy, scanning electron microscopy (SEM) and Fourier transform Infrared (FT-IR) spectroscopy. The XRD patterns show the high purity of samples. The mean crystal's sizes have been estimated by Debye-Sherrer equation and results show the mean crystallite size is decreasing with increase capping agent concentrations. UV-Vis spectroscopy results show a shift in the peaks and broadening with the PVA and PVP increasing. The broadening of the absorbance spectrum with increasing in capping agent concentrations is due to the quantum confinement of nanostructures. The band gap of prepared samples has been estimated by Tauc equation and graph and results show that the band gaps of samples are increasing with increase in the capping agent's concentration. The SEM images show the distribution of the uncapped sample is different from capped samples. FT-IR spectroscopy results show by increasing of capping agent concentration the energy between the functional group is changed and some peaks show a slight shift.

A Fe(bipy)2 Unit Fused to a Keggin Polyoxotungstate Anion

2010 ◽  
Vol 63 (2) ◽  
pp. 252 ◽  
Author(s):  
Jingli Xie ◽  
Ryan Gilbert-Wilson ◽  
Boujemaa Moubaraki ◽  
Keith S. Murray ◽  
Anthony G. Wedd
Keyword(s):  
Hydrothermal Synthesis ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Hybrid Materials ◽  
Elemental Analysis ◽  
X Ray ◽  
X Ray Crystallography ◽  
Nmr Spectrometry ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Two new hybrid materials [Fe(bipy)3]3[ZnW12O39(OH)Fe(bipy)2(H2O)]2 and [Fe(bipy)3]2[CoW12O40] were obtained by hydrothermal synthesis. They contain [Fe(bipy)3] n+ (bipy = 2,2′-bipyridyl; n = 2 or 3) cations and Keggin-type polyoxotungstate anions. Both have been characterized by elemental analysis, FT-IR spectroscopy, 1H-NMR spectrometry, and single crystal X-ray crystallography. The anion in the former salt features [FeII(bipy)2(OH2)]2+ units covalently bound via a W=O-Fe bridge to the protonated anion [ZnW12O39(OH)]5–. The latter salt contains discrete [CoW12O40]6– anions.

scholarly journals A new oxygen-rich energetic salt dihydrazine tetranitroethide: a promising explosive alternative with high density and good performance

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23250-23253
Author(s):  
Haozheng Mei ◽  
Junqing Yang ◽  
Wenli Cao ◽  
Yong Hu ◽  
Piao He ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Single Crystal ◽  
Elemental Analysis ◽  
High Energy ◽  
Oxygen Balance ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A novel high-energy salt with good oxygen balance, dihydrazine tetranitroethide (5), has been synthesized and characterized by FT-IR spectroscopy, NMR spectroscopy, elemental analysis, and X-ray single crystal diffraction.

Multiscale exploration of hydrocarbons adsorption and hopping through the ZSM-5 channels - from Monte Carlo modelling to experiment

2021 ◽  
Author(s):  
Maciej Strzempek ◽  
Karolina A. Tarach ◽  
Kinga Góra-Marek ◽  
Fernando Rey ◽  
Miguel Palomino ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Ir Spectroscopy ◽  
Aliphatic Hydrocarbons ◽  
Adsorption Studies ◽  
Ft Ir ◽  
Gravimetric Adsorption ◽  
Hydrocarbons Adsorption ◽  
Ft Ir Spectroscopy

Abstract In this article the results of the statistical MC modelling corroborated by the FT-IR spectroscopy and gravimetric adsorption studies of the low aliphatic hydrocarbons in ZSM-5 (Si/Al =28 or...

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