Displaying all 12 publications

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  1. Ikmal Hisham NA, Khaledi H, Mohd Ali H
    PMID: 21836916 DOI: 10.1107/S1600536811022021
    In the zwitterionic zinc title complex, [ZnCl(2)(C(14)H(20)N(2)O(2))], the Zn(II) ion is four-coordinated in a distorted tetra-hedral geometry. The Schiff base ligand employs its phenolate O and imine N atoms to coordinate the metal atom in a bidentate mode. Two Cl atoms complete the tetra-hedral coordination environment. In the crystal, a pair of N-H⋯O hydrogen bonds connect the mol-ecules into a centrosymmetric dimer. C-H⋯O, C-H⋯Cl and C-H⋯π inter-actions are also observed.
  2. Ikmal Hisham NA, Khaledi H, Mohd Ali H
    Acta Crystallogr Sect E Struct Rep Online, 2011 Aug 1;67(Pt 8):m1044-5.
    PMID: 22090835 DOI: 10.1107/S1600536811026493
    In the title compound, [Mn(C(14)H(19)N(2)O(2))(2)Cl(H(2)O)]·H(2)O, the Mn(III) atom is N,O-chelated by two monoanionic Schiff bases, forming two six-membered chelate rings. One Cl atom and one water mol-ecule in trans positions complete a distorted octa-hedral geometry around the metal atom. In the crystal, the complex mol-ecules and the uncoordinated water mol-ecules are connected via O-H⋯N, O-H⋯O and O-H⋯Cl hydrogen bonds into layers parallel to the ac plane and these are consolidated by C-H⋯π inter-actions. The layers are further linked into a three-dimensional network through C-H⋯O inter-actions.
  3. Ikmal Hisham NA, Suleiman Gwaram N, Khaledi H, Mohd Ali H
    PMID: 21522887 DOI: 10.1107/S1600536811002030
    The asymmetric unit of the title compound, [MnCl(2)(C(11)H(17)N(3))], contains two crystallographically independent mol-ecules with slightly different geometries. In each mol-ecule, the Mn(II) ion is five coordinated by the N,N',N''-tridentate Schiff base and two Cl atoms in a distorted square-pyramidal geometry. In the crystal, C-H⋯Cl hydrogen bonds link adjacent mol-ecules into a three-dimensional network.
  4. Suleiman Gwaram N, Ikmal Hisham NA, Khaledi H, Mohd Ali H
    PMID: 21522819 DOI: 10.1107/S1600536810053778
    The asymmetric unit of the title compound, [Zn(NCS)(2)(C(13)H(19)N(3)O)], contains two crystallographically independent mol-ecules. In each mol-ecule, the Zn(II) ion is five-coordinated by the N,N',N"-tridentate Schiff base and the N atoms of two thio-cyanate ligands in a distorted square-pyramidal geometry. The two mol-ecules differ mainly in the deviations from the ideal geometry, with τ values of 0.14 and 0.33. In the crystal, inter-molecular C-H⋯S hydrogen bonds are observed. An intra-molecular C-H⋯N hydrogen bond occurs in one of the independent mol-ecules.
  5. Suleiman Gwaram N, Ikmal Hisham NA, Khaledi H, Mohd Ali H
    PMID: 21522576 DOI: 10.1107/S1600536810050889
    In the title compound, [Cu(NCS)(2)(C(13)H(19)N(3)O)], the Cu(II) ion is five-coordinated by the N,N',N''-tridentate Schiff base and the N atoms of two isothio-cyanate ligands in a square-pyramidal geometry. In the crystal, C-H⋯N, C-H⋯O and C-H⋯S inter-actions link adjacent mol-ecules into layers parallel to the ac plane. A weak inter-molecular π-π inter-action occurs between the aromatic rings with a centroid-centroid distance of 3.9412 (9) Å.
  6. Ikmal Hisham NA, Suleiman Gwaram N, Khaledi H, Mohd Ali H
    PMID: 21522575 DOI: 10.1107/S1600536810051160
    In the title compound, [CuCl(C(14)H(19)N(2)O(2))], the Cu(II) ion is four-coordinated by one deprotonated N,N',O-tridentate Schiff base and one chloride ion in a distorted square-planar geometry. In the crystal, adjacent mol-ecules are linked via C-H⋯Cl and C-H⋯O inter-actions, forming infinite layers parallel to the (100) plane. The structure was determined from a non-merohedrally twined crystal [twin ratio 0.777 (3):0.223 (3)].
  7. Ikmal Hisham NA, Suleiman Gwaram N, Khaledi H, Mohd Ali H
    PMID: 21522573 DOI: 10.1107/S1600536810050671
    In the title compound, [ZnCl(2)(C(13)H(19)N(3)O)], the Schiff base ligand acts as an N,N',N''-tridentate chelating agent, making two five-membered rings with the Zn(II) ion. The metal atom is five-coordinated by the Schiff base ligand and two Cl atoms in a distorted square-pyramidal geometry. An intra-molecular C-H⋯Cl inter-action occurs. In the crystal, adjacent mol-ecules are linked together via C-H⋯Cl hydrogen-bonding and long range C-H⋯O and C-H⋯Cl inter-actions into a three-dimensional network.
  8. Ikmal Hisham NA, Suleiman Gwaram N, Khaledi H, Mohd Ali H
    PMID: 21522562 DOI: 10.1107/S1600536810050221
    In the title compound, [MnCl(2)(C(13)H(19)N(3)O)], the Mn(II) ion is penta-coordinated in a distorted square-pyramidal geometry. The coordination environment is defined by the N,N',N''-tridentate Schiff base ligand and one Cl atom in the basal positions and one Cl atom in the apical position. In the crystal, inter-molecular C-H⋯Cl hydrogen bonds link the mol-ecules into a three-dimensional network. An intra-molecular C-H⋯Cl hydrogen bond is also observed.
  9. Ikmal Hisham NA, Mohd Ali H, Ng SW
    PMID: 21583336 DOI: 10.1107/S1600536809025215
    The Cu(II) atom in the title compound, [Cu(C(13)H(16)ClN(2)O(2))Cl], exists in a distorted square-planar coordination environment as the deprotonated Schiff base chelates to the Cu(II) atom through three atom sites. In the crystal structure, adjacent mol-ecules are linked by a Cu⋯Cl [3.011 (1) Å] bridge, generating a linear chain running along the b axis of the ortho-rhom-bic unit cell.
  10. Suleiman Gwaram N, Ikmal Hisham NA, Khaledi H, Mohd Ali H
    Acta Crystallogr Sect E Struct Rep Online, 2011 Jan 22;67(Pt 2):m251.
    PMID: 21522905 DOI: 10.1107/S1600536811002480
    In the title complex, [Cd(2)(NCS)(4)(C(13)H(19)N(3)O)(2)], the two Cd(II) ions are bridged by a pair of thio-cyanate N:S-bridging ligands around an inversion center. One terminal thio-cyanate N atom and one N,N',N''-tridentate Schiff base ligand complete a distorted CdN(5)S octa-hedral geometry about each Cd(II) atom. In the crystal, the Schiff base aromatic rings of adjacent mol-ecules are arranged above each other into infinite chains along the a axis with alternate centroid-centroid separations of 3.5299 (13) and 3.7857 (13) Å.
  11. Suleiman Gwaram N, Ikmal Hisham NA, Khaledi H, Mohd Ali H
    Acta Crystallogr Sect E Struct Rep Online, 2011 Jan 15;67(Pt 2):m205.
    PMID: 21522869 DOI: 10.1107/S160053681100136X
    In the title complex, [Co(NCS)(2)(C(13)H(19)N(3)O)(H(2)O)], the Co(II) ion is six-coordinated by the N,N',N''-tridentate Schiff base, the N atoms of two thio-cyanate ligands and one water mol-ecule in a distorted octa-hedral geometry. Intra-molecular C-H⋯N and C-H⋯O hydrogen bonds occur. In the crystal, inter-molecular O-H⋯O, O-H⋯S, C-H⋯S and S⋯S [3.5546 (18) Å] inter-actions result in an infinite three-dimensional network.
  12. Suleiman Gwaram N, Ikmal Hisham NA, Khaledi H, Mohd Ali H
    Acta Crystallogr Sect E Struct Rep Online, 2010 Dec 24;67(Pt 1):m108.
    PMID: 21522521 DOI: 10.1107/S1600536810052578
    In the title compound, [Ni(NCS)(2)(C(13)H(19)N(3)O)(H(2)O)], the Ni(II) ion is six-coordinated by the N,N',N''-tridentate Schiff base, the N atoms of two thio-cyanate ligands and one water O atom in a distorted octa-hedral geometry. Intra-molecular C-H⋯N and C-H⋯O hydrogen bonds occur. In the crystal, O-H⋯S, O-H⋯O and C-H⋯S hydrogen bonds link adjacent mol-ecules into layers parallel to the ac plane.
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