Ibrahim N. Hassan

Dr. Ibrahim N. Hassan


Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 August 2008 in Acta Crystallographica Section E Crystallographic Communications
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Journal Article
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IHIbrahim N. Hassan
Ibrahim N. Hassan
BYBohari M. Yamin
Bohari M. Yamin
MKMohammad B. Kassim
Mohammad B. Kassim
The title compound, C12H14N2O3S, adopts a cis–trans geometry of the thiourea group and is stabilized by intramolecular hydrogen bonds between the carbonyl O atoms and the H atom of the thioamide group and by a C—H...S interaction. Molecules are linked by two intermolecular hydrogen bonds (C—H...O and N—H...O), forming a one-dimensional chain parallel to the c axis.

9 October 2008 in Acta Crystallographica Section E Crystallographic Communications
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Journal Article
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IHIbrahim N. Hassan
Ibrahim N. Hassan
BYBohari M. Yamin
Bohari M. Yamin
MKMohammad B. Kassim
Mohammad B. Kassim
The title compound, C(13)H(16)N(2)O(3)S, is a thio-urea derivative with benzoyl and propoxycarbonyl-methyl groups attached to the two terminal N atoms. These groups adopt trans and cis configurations, respectively, with respect to the S atom across the thio-urea C-N bonds. The compound crystallizes in the P2(1)/c space group with Z = 8, resulting in two unique molecules in the asymmetric unit linked by C-H⋯S and C-H⋯O hydrogen bonds, forming a one-dimensional zigzag chain along the c axis.

22 October 2008 in Acta Crystallographica Section E Crystallographic Communications
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Journal Article
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IHIbrahim N. Hassan
Ibrahim N. Hassan
BYBohari M. Yamin
Bohari M. Yamin
MKMohammad B. Kassim
Mohammad B. Kassim
In the title compound, C(14)H(18)N(2)O(3)S, the butyl acetate fragment and the benzoyl group adopt a cis-trans configuration, respectively, with respect to the thiono S atom across the C-N bonds. In the crystal packing, the mol-ecules are linked by inter-molecular N-H⋯O and C-H⋯O hydrogen bonds to form a one-dimensional chain along the c axis. The terminal butyl C atom is disordered with occupancies 0.82 (2)and 0.18 (2).

14 November 2009 in Acta Crystallographica Section E Structure Reports Online
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IHIbrahim N. Hassan
Ibrahim N. Hassan
BYBohari M. Yamin
Bohari M. Yamin
MKMohammad B. Kassim
Mohammad B. Kassim
In the title compound, C(11)H(12)N(2)O(3)S, the methyl acetate and benzoyl groups adopt a cis-trans configuration with respect to the thiono S atom across the C-N bonds. An intra-molecular N-H⋯O hydrogen bond is observed. In the crystal packing, mol-ecules are linked by inter-molecular N-H⋯S and C-H⋯O hydrogen bonds to form a two-dimensional network lying parallel to (101).

30 November 2004 in Acta Crystallographica Section E Structure Reports Online
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BYBohari M Yamin
Bohari M Yamin
IHIbrahim N. Hassan
Ibrahim N. Hassan

9 January 2010 in Acta Crystallographica Section E Structure Reports Online
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Journal Article
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WHWong W. Hung
Wong W. Hung
IHIbrahim N. Hassan
Ibrahim N. Hassan
BYBohari M. Yamin
Bohari M. Yamin
MKMohammad B. Kassim
Mohammad B. Kassim
The mol-ecule of the title compound, C(22)H(18)N(4)O(2)S(2), lies across a crystallographic inversion centre. The central benzene ring forms dihedral angles of 29.39 (9) and 79.11 (12)°, respectively, with the thio-urea unit and the terminal phenyl ring. Intra-molecular N-H⋯O hydrogen bonds generate two S(6) ring motifs. In the crystal, mol-ecules are linked into chains along [10] by inter-molecular N-H⋯S hydrogen bonds.