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Volume 10, No. 1, March 2015, Jumada 2  1436 H

Articles

 

 

Effect of the bridging unit in bis-(benzoxazolyl) titanium, zirconium and vanadium complexes on catalytic ethylene polymerization reactions

B = bridging unit; R1, R2 = H, Me

Bis-(benzoxazolyl) transition metal complexes: Synthesis, characterization and catalytic application in ethylene polymerization after activation with methylalumoxane (MAO).

 

Hamdi Ali Elagab,

Helmut G. Alt

 

JJC, 2015, 10(1), 1-19

Kinetics of thermal and photo-initiated release of tris(1-chloro-2-propyl) phosphate (TCPP) from polyurethane foam materials

                First order kinetics of the thermal and photo segregation of TCPP

  

 

Raed Ahmad Ghanem

JJC, 2015, 10(1), 20-33

Molecular Docking Studies and X-ray Structure Determination of

1-{4-(Methylsulfonyl)phenyl}-5-phenyl-1H-tetrazole

The structure of 1-{4-(methylsulfonyl)phenyl}-5-phenyl-1H-tetrazole was determined by X-ray crystallography. The latter crystallizes in the monoclinic space group Ia. The cell dimensions of the azole are a = 12.2393 (6) , b = 12.4076 (6) , c = 10.0409 (5) , b = 112.5240 (5), V = 1408.50 (12) 3, and Z = 4, and its structure was refined to R1 = 0.0230, wR2 = 0.0614. The tetrazole ring is essentially planar, while the aryl rings at the 1- and 5-positions of this compound show consistent twist from the tetrazole plane, with tetrazole-aryl dihedral angles in the range of 38.63(4) to 47.23(5). No strong intermolecular hydrogen bonds were observed. Docking study of the studied tetrazole with cyclooxygenase-2 enzyme was preformed. Amino acid residues in the binding site that interact with the molecule were identified and their interactions with the ligand were discussed.

 

 

 

 

Baker Jawabrah Al-Hourani, Robert McDonald, Musa I. El-Barghouthi, Wajdy Al-Awaida, Sai Kiran Sharma, Frank Wuest

 

JJC, 2015, 10(1), 34-40

1,2-Ethylidene bridged bis-(benzimidazolyl, benzothiazolyl, and benzoxazolyl)  transition metal complexes as catalysts for ethylene polymerization

 

 R1, R2 = H, Me

Structure-property-relationship studies for catalytic ethylene polymerization have been performed with 1,2-ethylidene bridged bis-(benzimidazolyl, benzothiazolyl and benzoxazolyl) complexes of Ti,  Zr and V.

 

 

Hamdi Ali Elagab,

Helmut G. Alt

 

JJC, 2015, 10(1), 41-57

Selective Hydrogenation of Cinnamaldehyde Catalyzed by Ruthenium (II) Complexes Based on Azoimine Ligands

                Four Ru (II) complexes based on azoimine ligands were tested with respect to their catalytic behavior in the liquid phase hydrogenation of cinnamaldehyde (CALD). With a CALD-to-Ru ratio of 84:1 at T=86oC, pH2=4 bar and [KOH]= 5.8210-3 M,  a complete conversion could be accomplished in only 90 minutes with selectivity to cinnamyl alcohol approaching 95%.

 

Hanan A. Ali, Mousa Z. Al-Noaimi, Sabri S. Mahmoud, Ayman Y. Hammoudeh

JJC, 2015, 10(1), 58-68

Synthesis and Characterization of Some Unsymmetrical Schiff Bases and their Copper(II) and Nickel(II) Complexes

Successful synthesis of new unsymmetrical Schiff bases has been accomplished either directly or via the template method in presence of nickel (II) and copper (II) salts. Characterization of the isolated imines and their complexes included NMR, IR, elemental analysis, MS, UV-Vis, magnetic susceptibility, melting point techniques, and theoretical calculations using DFT/B3LYP.

 

 

Fatima Esmadi, Kamis Abbas, Tareq Irshaidat, Ayman S. Dawha, Maher Al-Duleimy, Latifa Ismail, Mohammad Esmadi

 

JJC, 2015, 10(1), 69-85