1. Project number CY/NMRRELAX/67 Funded by
(Principal Investigator) KFUPM
Title: Nuclear Magnetic Relaxation Studiesof
Phosphorus containg compounds
2. SABIC/ KFUPM- PI 1/10/00 – 31/3/02
Design and Syntheis of new polyampholytes for theie potential use in protein purification
3. Polyolefin Project (SABIC/RI) PN 21164 1/5/01 – 31/3/04
4 Solid-state NMR NMR study of Silver Complexes with some sulfur containing biologically important ligands, SABIC/KFUPM 1/6/04 – 31/1/06, Co-I
5. Multinuclear NMR Study of interaction of Some sulfur containing biologically important ligands with Cd and Hg KFUPM 1/9/04 – 1/3/07 Co-I
6. Development of Novel Thermoplastic Polymer Perfomance Promoters (CRP 2219) CIBA/RI – Co-I 1/1/05- 31/12/07
7. Chelation of ethylene diamine and its derivatives with nd10 metal ions SABIC/KFUPM 1/9/06 – 28/2/08 – Co-I
PARTICIPATION IN Ph. D. / M. S. PROGRAMME
I have served / am serving in the thesis committee of the following students
as Advisor/ Member.
(a) Completed Thesis
1. J. C. N. Benny Ph. D. 1993 Member
Chem. Dept., Annamalai Univ., India.
Thesis title: 1H, 13C, and 17O NMR Spectral Studies of some
six-membered sulphoxides and sulphones.
2. Zaka Ahmed M. S. 1994 Member
Thesis title: Cyclopolymerization of Quaternary Piperazinium
3. Azfar Hassan Ph. D 1996 Advisor
Thesis title: The Origin of Hetero-effects in Nitrogen inversion
4. Al-Jaroudi M. S. 1996 Member
Thesis title: Dipolar Addition of Medium Size Ring Cyclic
5. Naseem Akhtar Ph. D. 1996 Member
Thesis title: C-13, N-15, AND P-31 NMR Studies of Scrambling Reactions and Redox Reactions of some Gold(I) complexes
6. Y. T. A. Janabi Ph. D. 1997 Member
Thesis title: ESR investigation of anisotropic rotation using nitroxide spin probe
7. S. M. A. Hashmi, Ph. D. 1998 Member
Thesis title: Regioselective synthesis of nitrones and their application in
8. Asif Rashhed M. S. 1998 Member
Thesis title: Synthesis and solution properties of Polymeric Zwitterionic Ammonium Betains
9. Saeed Ahmad Ph. D. 2002 Member
Thesis title: Multinuclear NMR of Ag and Au complexes
10. Ifadat Ali Khan Ph. D. 2003 Member
Thesis title Deactivation of dehydration Adsorbents
11. M. A. J. Mazumdar M. S. 2004 Member
Title: Synthesis and properties of some poly sulfobetains
12. Yunusa Umar Ph. D. 2006 Member
Title: Synthesis and solution properties of a new class of pH responsive polymers.
Main Contributions in Research
A detailed 1H, 19F, and 31P NMR spectral analysis of several Phosphorus Flourine compounds with special emphasis on tetrafluro diazadiphosphetidines. Explicit expressions for X transition frequencies in NMR spectra of chemically equivalent [A[X]2]2 spin system was developed for the cases where one of the coupling (A,X) constant is much larger than any of the other coupling constants, as in compounds containing PF2 groups. Barriers to pseudorotation were determined by NMR band shape analysis and mechanism of exchange in diazadiphosphetidines worked out.
(papers no. 4, 6, 7, 8, 10, 11, 14, 15)
The first C-13 NMR signal assignments in friedo-oleananes, an important class of triterpenes, were reported, using inversion recovery and lanthanide induced shift techniques. Solution conformation of these triterpenes were studied by T1 and computer fitting of LIS data and shown to be chair-chair-chair-twistboat-boat.
(papers no. 12, 17, 19, 20, 23, 24, 27)
Characterization and microstructure (and tacticity) determinations using NMR in several polymers including large number of polysulphones. (Paper no. 22, 28, 30, 34, 37, 47)
Structure-NMR parameter relationships in some naphthalene derivatives, sulphonanilides, and carbamoyloximes have been worked out. (paper no. 31, 40, 42)
Detailed kinetic and mechanistic study of nitrone cycloaddition reaction. The cycloaddition products offered an unique opportunity to study the effects of substituent and ring fusion on conformational preference and nitrogen inversion process. NMR band-shape analysis provided precise nitrogen inversion barriers in these and related systems. This helped to shed light on various factors ( hetero-atom, anomeric effect etc.) that influence the inversion barrier.
(paper no. 32, 33, 35, 41, 48, 50, 55, 56, 57)