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Thahira Begum S. A. Ravoof
Universiti Putra Malaysia
57Publications
9H-index
238Citations
Publications 57
Newest
Published on 2019in Journal of Molecular Structure2.12
Nurul N.M. Ishak (UPM: Universiti Putra Malaysia), Junita Jamsari1
Estimated H-index: 1
(UPM: Universiti Putra Malaysia)
+ 4 AuthorsThahira Begum S. A. Ravoof9
Estimated H-index: 9
(UPM: Universiti Putra Malaysia)
Abstract Four new mixed-ligand Ni(II) complexes (1–4) containing imidazole (im) or benzimidazole (bz) and tridentate Schiff bases derived from 2,4-dihydroxybenzaldehyde (24D) and 4-methyl-3-thiosemicarbazide (MT24D) or 4-phenyl-3-thiosemicarbazide (PT24D) were synthesised and characterised using elemental and spectral analysis including FTIR, UV–Vis, 1H NMR, 13C NMR and mass spectrometry for Schiff bases, while the complexes were additionally analysed using ICP-OES, molar conductivity, magnetic ...
Enis Nadia Md Yusof3
Estimated H-index: 3
(University of Newcastle),
Nazhirah Muhammad Nasri (UPM: Universiti Putra Malaysia)+ 2 AuthorsEdward R. T. Tiekink35
Estimated H-index: 35
(Sunway University)
The title CuII complex, [Cu(C13H11N2OS2)2], features a trans-N2S2 donor set as a result of the CuII atom being located on a crystallographic centre of inversion and being coordinated by thiol­ate-S and imine-N atoms derived from two di­thio­carbazate anions. The resulting geometry is distorted square-planar. In the crystal, π(chelate ring)–π(fur­yl) [inter-centroid separation = 3.6950 (14) A and angle of inclination = 5.33 (13)°] and phenyl-C—H⋯π(phen­yl) inter­actions sustain supra­molecular la...
Nabeel Arif Tawfeeq (University of Anbar), N. Arif Tawfeeq (University of Anbar)+ 1 AuthorsThahira Begum S. A. Ravoof9
Estimated H-index: 9
(UPM: Universiti Putra Malaysia)
In the title bis­chalcone, C17H12Br2O, the olefinic double bonds are almost coplanar with their attached 4-bromo­phenyl rings [torsion angles = −10.2 (4) and −6.2 (4)°], while the carbonyl double bond is in an s-trans conformation with with respect to one of the C=C bonds and an s-cis conformation with respect to the other [C=C—C=O = 160.7 (3) and −15.2 (4)°, respectively]. The dihedral angle between the 4-bromo­phenyl rings is 51.56 (2)°. In the crystal, mol­ecules are linked into a zigzag chai...
Published on Apr 23, 2019in Molbank
Enis Nadia Md Yusof3
Estimated H-index: 3
,
Nazhirah Muhammad Nasri + 1 AuthorsEdward R. T. Tiekink35
Estimated H-index: 35
The title NiII complex, Ni(L)(LH2) (1), where LH2 is S-2-methybenzyl-β-N-(2-hydroxy-3-methoxybenzylmethylene) dithiocarbazate, was isolated from the reaction of Ni(acetate)2·4H2O and two molar equivalents of LH2. The complex was characterized by elemental analysis, spectroscopy (IR and UV) as well as by a single-crystal X-ray structure determination. The nickel(II) center is coordinated within a cis-NOS2 donor set that defines a square planar geometry. Three donor atoms, i.e., N, O, and S, are p...
Published on Feb 15, 2019in International Journal of Molecular Sciences4.18
Enis Nadia Md Yusof3
Estimated H-index: 3
,
Muhammad A. M. Latif1
Estimated H-index: 1
+ 6 AuthorsThahira Begum S. A. Ravoof9
Estimated H-index: 9
Six new organotin(IV) compounds of Schiff bases derived from S-R-dithiocarbazate [R = benzyl (B), 2- or 4-methylbenzyl (2M and 4M, respectively)] condensed with 2-hydroxy-3-methoxybenzaldehyde (oVa) were synthesised and characterised by elemental analysis, various spectroscopic techniques including infrared, UV-vis, multinuclear (1H, 13C, 119Sn) NMR and mass spectrometry, and single crystal X-ray diffraction. The organotin(IV) compounds were synthesised from the reaction of Ph2SnCl2 or Me2SnCl2 ...
Published on Nov 1, 2018in Journal of Molecular Structure2.12
Enis Nadia Md Yusof3
Estimated H-index: 3
(University of Newcastle),
Edward R. T. Tiekink35
Estimated H-index: 35
(Sunway University)
+ 3 AuthorsThahira Begum S. A. Ravoof9
Estimated H-index: 9
(UPM: Universiti Putra Malaysia)
Abstract A light-yellow crystalline product ( 1 ), which was isolated after one week from the filtrate of the reaction between S-2-methylbenzyldithiocarbazate and 2,3-dihydroxybenzaldehyde, was characterised by single crystal X-ray diffraction, FTIR and NMR spectroscopic analyses. The experimental molecular structure of 1 has been established by X-ray crystallography and showed, to a first approximation, a planar C 2 N 2 S 2 + dihydroxyphenyl region that has an almost orthogonal relationship to ...
Ming Yueh Tan1
Estimated H-index: 1
,
Karen A. Crouse19
Estimated H-index: 19
+ 1 AuthorsEdward R. T. Tiekink35
Estimated H-index: 35
C18H21N3O2, triclinic, P¯1 (no. 2), a=8.5155(4) A, b=10.6415(4) A, c=19.0732(10) A, α=80.918(4)°,
Ming Yueh Tan1
Estimated H-index: 1
(Tunku Abdul Rahman University College),
Karen Anne Crouse1
Estimated H-index: 1
(UPM: Universiti Putra Malaysia)
+ 2 AuthorsEdward R. T. Tiekink35
Estimated H-index: 35
(Sunway University)
The title ZnII complex, [Zn(C19H20N3OS)2] {systematic name: bis­[(N-ethyl-N′-{(Z)-[(2E)-3-(4-meth­oxy­phen­yl)-1-phenyl­prop-2-en-1-yl­idene]amino}­carb­am­im­id­o­yl)sulfanido]zinc(II)}, features a tetra­hedrally coordinated ZnII ion within an N2S2 donor set provided by two N,S-chelating thio­semicarbazone anions. The resulting five-membered Zn,C,N2,S chelate rings adopt different conformations, i.e. almost planar and an envelope with the Zn atom being the flap atom. The configuration about the...
Siti Aminah Omar2
Estimated H-index: 2
,
Chee Keong Chah + 2 AuthorsEdward R. T. Tiekink35
Estimated H-index: 35
In the title dithiocarbazate ester, C16H17N3S2 (systematic name: (Z)-{[(benzylsulfanyl)methanethioyl]amino}[1-(6-methylpyridin-2-yl)ethylidene]amine), the central methylidenehydrazinecarbodithioate (C2N2S2) core is almost planar (r.m.s. deviation = 0.0111 A ° ) and forms dihedral angles of 71.67 (3)⁰ with the approximately orthogonally inclined thioester phenyl ring, and 7.16 (7)⁰ with the approximately coplanar substituted pyridyl ring. The latter arrangement and the Z configuration about the i...
Lee Chin Lai (UPM: Universiti Putra Malaysia), Che Nursarah Che AbdulRahman (UPM: Universiti Putra Malaysia)+ 3 AuthorsEdward R. T. Tiekink35
Estimated H-index: 35
(Sunway University)
The title disubstituted thio­urea derivative, C10H14N4S, features an almost planar imine (E configuration, C3N) core flanked by thio­urea (CN2S) and methyl­pyridyl (C5N) residues (each plane has a r.m.s. deviation of the respective fitted atoms of 0.0066 A). The dihedral angles between the core and the thio­urea and pyridyl residues are 20.25 (8) and 7.60 (9)°, respectively, indicating twists in the mol­ecule; the dihedral angle between the outer planes is 13.62 (7)°. There is an anti-dispositio...
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