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Featured researches published by Rapidah Mohamad.


Acta Crystallographica Section E: Crystallographic Communications | 2017

Di-n-butyl­bis­[N-(2-meth­oxy­eth­yl)-N-methyl­dithio­carbamato-κ2S,S′]tin(IV): crystal structure and Hirshfeld surface analysis

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Mukesh M. Jotani; Edward R. T. Tiekink

A skew trapezoidal bipyramidal coordination geometry based on a C2S4 donor set is found in the structure of (C6H5)2Sn[S2CN(Me)CH2CH2OMe]2, with the SnIV atom lying on a mirror plane.


Acta Crystallographica Section E: Crystallographic Communications | 2016

Distinct coordination geometries in bis­[N,N-bis­(2-meth­oxy­eth­yl)di­thio­carbamato-κ2S,S′]di­phenyltin(IV) and bis­[N-(2-meth­oxy­eth­yl)-N-methyl­dithio­carbamato-κ2S,S′]di­phenyl­tin(IV): crystal structures and Hirshfeld surface analysis

Rapidah Mohamad; Normah Awang; Mukesh M. Jotani; Edward R. T. Tiekink

Two distinct coordination geometries, each based on a C2S4 donor set, are found in the title compounds, being based on an octahedron in (C6H5)2Sn(S2CN(Me)CH2CH2OMe)2 and a skew trapezoidal bipyramid in (C6H5)2Sn[S2CN(CH2CH2OMe)2]2.


Acta Crystallographica Section E: Crystallographic Communications | 2018

Crystal structures and Hirshfeld surface analyses of bis­[N,N-bis­(2-meth­oxy­eth­yl)di­thio­carbamato-κ2S,S′]di-n-butyl­tin(IV) and [N-(2-meth­oxy­eth­yl)-N-methyl­dithio­carbamato-κ2S,S′]tri­phenyl­tin(IV)

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Mukesh M. Jotani; Edward R. T. Tiekink

The coordination geometry in (n-Bu)2Sn[S2CN(CH2CH2OCH3)2]2, (I), is based on a skewed trapezoidal bipyramid, while that in (C6H5)3Sn[S2CN(CH3)CH2CH2OCH3], (II), is based on a tetrahedron. In the crystal of (I), supramolecular layers parallel to (10-1) are sustained by methylene-C—H⋯O(methoxy) interactions, while in (II), centrosymmetric dimers are formed via pairwise weak phenyl-C—H⋯π(phenyl) contacts.


Acta Crystallographica Section E: Crystallographic Communications | 2018

Crystal structures and Hirshfeld surface analyses of (N-hexyl-N-methyl­dithio­carbamato-κ2S,S′)triphenyl­tin(IV) and [N-methyl-N-(2-phenyl­ethyl)­dithio­carbamato-κ2S,S′]tri­phenyl­tin(IV)

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Mukesh M. Jotani; Edward R. T. Tiekink

The metal coordination geometry in each of the title molecules, [Sn(C6H5)3(C8H16NS2)] (I) and [Sn(C6H5)3(C10H12NOS2)] (II), is based on a heavily distorted tetrahedron owing to the asymmetric mode of coordination of the dithiocarbamate ligand. The persence of C—H⋯π(phenyl) interactions in the crystals lead to dimeric aggregates in (I) and supramolecular chains (II).


Acta Crystallographica Section E: Crystallographic Communications | 2016

[N-Benzyl-N-(2-phenyl­eth­yl)di­thio­carbamato-κ2S,S′]tri­phenyl­tin(IV) and [bis­(2-meth­oxy­eth­yl)di­thio­carbamato-κ2S,S′]tri­phenyl­tin(IV): crystal structures and Hirshfeld surface analysis

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Mukesh M. Jotani; Edward R. T. Tiekink

Heavily distorted trigonal–pyramidal coordination geometries, each based on a C3S2 donor set and with the loosely bound S atom approximately trans to one of the ipso-C atoms, are found in the title compounds (C6H5)3Sn[S2CN(Ben)CH2CH2Ph] and (C6H5)3Sn[S2CN(CH2CH2OMe)2].


Acta Crystallographica Section E: Crystallographic Communications | 2016

Triphenyltin(IV) and [bis(2-methoxyethyl)dithiocarbamato-κ2 S,S′]triphenyltin(IV): Crystal structures and Hirshfeld surface analysis

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Mukesh M. Jotani; Edward R. T. Tiekink

Heavily distorted trigonal–pyramidal coordination geometries, each based on a C3S2 donor set and with the loosely bound S atom approximately trans to one of the ipso-C atoms, are found in the title compounds (C6H5)3Sn[S2CN(Ben)CH2CH2Ph] and (C6H5)3Sn[S2CN(CH2CH2OMe)2].


Acta Crystallographica Section E: Crystallographic Communications | 2016

[N-Benzyl-N-(2-phenylethyl)dithiocarbamato-κ2S,S′]triphenyltin(IV) and [bis(2-methoxyethyl)dithiocarbamato-κ2S,S′]triphenyltin(IV): crystal structures and Hirshfeld surface analysis

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Mukesh M. Jotani; Edward R. T. Tiekink

Heavily distorted trigonal–pyramidal coordination geometries, each based on a C3S2 donor set and with the loosely bound S atom approximately trans to one of the ipso-C atoms, are found in the title compounds (C6H5)3Sn[S2CN(Ben)CH2CH2Ph] and (C6H5)3Sn[S2CN(CH2CH2OMe)2].


Asian Journal of Chemistry | 2018

Synthesis and characterization of novel diorganotin(IV) complexes derived from N-methyl-phenethyl dithiocarbamate and bis(2-ethoxyethyl) dithiocarbamate

Norraphat Uttraphan Pim; Normah Awang; Rapidah Mohamad; Yang Farina Abdul Aziz; Nurul Farahana Kamaludin


Acta Crystallographica Section E: Crystallographic Communications | 2018

Crystal structures and Hirshfeld surface analyses of bis[N,N-bis(2-methoxyethyl)dithiocarbamato-κ2 S,S′]di-n-butyltin(IV) and [N-(2-methoxyethyl)-N-methyldithiocarbamato-κ2 S,S′]triphenyltin(IV)

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Mukesh M. Jotani; Edward R. T. Tiekink


THE i-SIHAT 2017 SYMPOSIUM in KUALA LUMPUR | 2017

SYNTHESIS AND CHARACTERIZATION OF ORGANOTIN(IV) DITHIOCARBAMATE COMPOUNDS AND THEIR CYTOTOXIC ACTIVITY ON CHRONIC MYELOGENOUS LEUKEMIA CELL LINE (K562).

Rapidah Mohamad; Normah Awang; Nurul Farahana Kamaludin; Nor Fadilah Rajab; Asmah Hamid

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Normah Awang

National University of Malaysia

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Nurul Farahana Kamaludin

National University of Malaysia

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Norraphat Uttraphan Pim

National University of Malaysia

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Asmah Hamid

National University of Malaysia

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Nor Fadilah Rajab

National University of Malaysia

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Nur Faizah Abu Bakar

National University of Malaysia

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Siti Aishah Zakaria

National University of Malaysia

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