31P{1H} NMR | An-Najah Staff

Synthesis and Characterization of 1,3-Diamine(Phosphine)-Ruthenium(Ii) Complexes Using Monodentate and Bidentate Phosphine Ligands

Mon, 2013-04-15 16:13 — Ismail Warad

Journal Title, Volume, Page:

Journal of Saudi Chemical Society, Vol. 11, No. 1; pp. 15-24 (2007)

Year of Publication:

2007

Link:

http://faculty.ksu.edu.sa/73826/Documents/16.pdf

Authors:

Ismail Warad

Department of Chemistry, Science College, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Preferred Abstract (Original):

The neutral Ru(II), chelating phosphine or diphosphine with 1,3-diamine (1,3-diamino-2-propanol) of type [RuCl2(PP)(NN)], are readily synthesized in very good yields at an inert atmosphere using dichloromethane as solvent. For the first time, the ruthenium(II) complexes: [trans-dichloro-(bis(triphenylphosphine)(1,3-diamino-2-propanol)ruthenium(II)] (2), [trans-dichloro(1,3-bis(diphenyl-phosphino)propane)(1,3-diamino-2-propanol)ruthenium(II)] (4) and [trans-dichloro(bis(ether-phosphine)-(1,3-diamino-2-propanol)ruthenium(II)] (6) have been prepared at room temperature starting from [RuCl2(PPh3)3],[RuCl2(Ph2PCH2CH2OCH3)2] and [RuCl2(dppp)2], respectively. Trans-RuCl2 with nitrogen atoms are trans to phosphorus atoms are structurally favored (kinetic) isomer. This structural phenomenon has been monitored by 31P{1H} NMR in CD2Cl2. All the mentioned complexes were fully characterized by NMR, IR, and FAB-MS as well as elemental analysis.

X-Ray Single Crystal, Spectral, Thermal Analysis and 31P{1H} NMR of Ruthenium(II)/Ether-Phosphine/1,2-Diphenyl-1,2-Ethanediamine Complexes

Wed, 2013-03-13 14:21 — Ismail Warad

Journal Title, Volume, Page:

Research on Chemical Intermediates March 2013, Volume 39, Issue 3, pp 1481-1490

Year of Publication:

2013

Link:

http://link.springer.com/article/10.1007/s11164-012-0706-7

Authors:

Ismail Warad

Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia

Current Affiliation:

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

[email protected]

Preferred Abstract (Original):

Neutral complex 1 and mono-cationic complex 2 were made available using Ph2PCH2CH2OCH3 and 1,2-diphenyl-1,2-ethanediamine ligands. One of the chloride atoms in complex 1 was abstracted by AgOTf to prepare the mono-cationic O–Ru–P closed complex 2. The hemilability of hybrid ether-phosphine ligand in such complexes was monitored by 31P{1H} NMR and confirmed by X-ray single crystal. XRD structure of complex 2 was found to be a Trigonal crystal system with P3 space group and Z = 6.