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Hemilability of Ether-Phosphine in Ruthenium(II) Complexes: 31P{1H}-Nuclear Magnetic Resonance (NMR), Fast Atom Bombardment-Mass Spectroscopy (FAB-MS) and Extended X-Ray Absorption Fine Structure Spectroscopy (EXAF) to Confirm The Open-Closed Behavior

Sun, 2013-04-14 12:40 — Ismail Warad

Journal Title, Volume, Page:

International Journal of the Physical Sciences Vol. 6(31), pp. 7183 - 7190, 30 November, 2011 DOI: 10.5897/IJPS11.677, ISSN 1992-1950, 2011 Academic Journals

Year of Publication:

2011

Link:

http://www.academicjournals.org/IJPS/abstracts/abstracts/abstract2011/30Nov/Wara...

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]

Rawhi Al-Far

Department of Applied Sciences, Faculty of Applied Sciences and I.T., Al-Balqa’ Applied University, Salt 19117, Jordan

Saud Al-Resayes

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

Ahmed Boshaala

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

Belkheir Hammouti

LCAE-URAC18, Faculté des Sciences, Université Mohammed Ier B.P. 717, 60000 Oujda, Morocco

Preferred Abstract (Original):

The hemilability of the ether-phosphine ligand [Ph2PCH2CH2OMe] was recorded during complexes 1 and 2 synthesis. The structures of both 1 and 2 have been deduced from elemental analysis, IR, EXAF, FAB-mass spectrometry, 1H, 13C{1H} and 31P{1H} NMR spectroscopy. One of the chloride atoms in 1 was abstracted using AgOTf reagent to prepare the mono-cationic O-Ru-P closed 2. By treatment complex 2 with excess amount of NH4Cl in 2-propanol complex 1 was re-prepared. FAB-MS, EXAF and 31P{1H}-NMR served to monitor the hemilability of the ether-phosphine in 1 and 2 at RT.

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.