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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Awwadi, Firas F. Warad, Ismail Al-Noaimi, Mousa Hammoudeh, Ayman Mansi, Ahmad Abdel-Rahman, Obadah S. |
| Description | Author Affiliation: Al-Noaimi M ( Department of Chemistry, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan. Electronic address: manoaimi@hu.edu.jo.); Awwadi FF ( Department of Chemistry, The University of Jordan, Amman 11942, Jordan.); Mansi A ( Department of Chemistry, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan.); Abdel-Rahman OS ( Fachbereich Chemie der Universität Konstanz, Universitätstraße 10, D-78457 Konstanz, Germany.); Hammoudeh A ( Chemistry Department, Yarmouk University, P.O. Box 566, Irbid, Jordan.); Warad I ( Department of Chemistry, AN-Najah National University, Nablus, Occupied Palestinian Territory.) |
| Abstract | The novel azoimine ligand, Ph-NH-N=C(COCH3)-NHPh(C≡CH) (H2L), was synthesized and its molecular structure was determined by X-ray crystallography. Catalytic hydration of the terminal acetylene of H2L in the presence of RuCl3·3H2O in ethanol at reflux temperature yielded a ketone (L1=Ph-N=N-C(COCH3)=N-Ph(COCH3) and an enol (L2=Ph-N=N-C(COCH3)=N-PhC(OH)=CH2) by Markovnikov addition of water. Two mixed-ligand ruthenium complexes having general formula, trans-[Ru(bpy)(Y)Cl2] (1-2) (where Y=L1 (1) and Y=L2 (2), bpy is 2.2'-bipyrdine) were achieved by the stepwise addition of equimolar amounts of (H2L) and bpy ligands to RuCl3·3H2O in absolute ethanol. Theses complexes were characterized by elemental analyses and spectroscopic (IR, UV-Vis, and NMR (1D (1)H NMR, (13)C NMR, (DEPT-135), (DEPT-90), 2D (1)H-(1)H and (13)C-(1)H correlation (HMQC) spectroscopy)). The two complexes exhibit a quasi-reversible one electron Ru(II)/Ru(III) oxidation couple at 604 mV vs. ferrocene/ferrocenium (Cp2Fe(0/+)) couple along with one electron ligand reduction at -1010 mV. The crystal structure of complex 1 showed that the bidentate ligand L1 coordinates to Ru(II) by the azo- and imine-nitrogen donor atoms. The complex adopts a distorted trans octahedral coordination geometry of chloride ligands. The electronic spectra of 1 and 1+ in dichloromethane have been modeled by time-dependent density functional theory (TD-DFT). |
| ISSN | 13861425 |
| Volume Number | 135 |
| e-ISSN | 18733557 |
| Journal | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-01-25 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Azo Compounds Chemistry Electrochemistry Imines Models, Molecular Quantum Theory Ruthenium Catalysis Coordination Complexes Chemical Synthesis Crystallography, X-ray Electrons Ligands Magnetic Resonance Spectroscopy Molecular Conformation Spectrophotometry, Ultraviolet Spectroscopy, Fourier Transform Infrared Thermodynamics Journal Article Research Support, Non-u.s. Gov't Discipline Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Atomic and Molecular Physics, and Optics Analytical Chemistry Instrumentation |
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