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1, Facile and reproducible syntheses of bis(dialkylselenophosphenyl)-selenides and -diselenides: X-ray structures of (iPr2PSe)2Se, (iPr2PSe)2Se2 and (Ph2PSe)2Se

Chinh Q. Nguyen, Adekunle Adeogun, Mohammad Afzaal, Mohammad A. Malik and Paul O'Brien

Chem. Commun., 2006, 2179 - 2181

Abstract: Facile and reproducible methods for the syntheses of bis(di-iso-propylselenophosphinyl)selenide (iPr2PSe)2Se ( 1), bis(di-iso-propylselenophosphinyl)diselenide (iPr2PSe)2Se2 ( 2) and bis(di-phenylselenophosphinyl)selenide (Ph2PSe)2Se ( 3) is reported.

2, Metal complexes of selenophosphinates from reactions with (R2PSe)2Se: [M(R2PSe2)n] (M = ZnII, CdII, PbII, InIII, GaIII, CuI, BiIII, NiII; R = iPr, Ph) and [MoV2O2Se2(Se2PiPr2)2]

Chinh Q. Nguyen, Adekunle Adeogun, Mohammad Afzaal, Mohammad A. Malik and Paul O'Brien

Chem. Commun., 2006, 2182 - 2184

Abstract: The reactions of bis(dialkylselenophosphinyl)selenide with a series of metals have been investigated: synthesis of several metal selenophosphinate complexes and their structures are reported.

3, The N-alkyldithiocarbamato complexes [M(S2CNHR)2] (M = Cd(II) Zn(II); R = C2H5, C4H9, C6H13, C12H25); their synthesis, thermal decomposition and use to prepare of nanoparticles and nanorods of CdS

Ashfaq A. Memon, Mohammad Afzaal, Mohammad A. Malik, Chinh Q. Nguyen, Paul O'Brien and Jim Raftery

Dalton Trans., 2006, 4499 - 4505

Abstract: A series of N-alkyldithiocarbamato complexes [M(S2CNHR)2] (M = Cd(II), Zn(II); R = C2H5, C4H9, C6H13, C12H25) have been synthesised and characterized. The decomposition of these complexes to sulfates has been investigated, and a mechanism proposed. The structures of [Zn(S2CNHHex)2], [Cd((SO4)2(NC5H5)4)]n and [Cd((SO4)2(NC5H5)2(H2O)2)]n have been determined by X-ray single crystal method. The cadmium complex [Cd(S2CNHC12H25)2] and zinc complex [Zn(S2CNHC6H13)2] were used as single-source precursors to synthesize CdS and ZnS nanoparticles, respectively. The synthesis of CdS nanoparticles was carried under various thermolysis conditions and changes in the shape of derived nanoparticles were studied by transmission electron microscope (TEM).

4, Review: Using coordination chemistry to develop new routes to semiconductor and other materials

Dongbo Fana, Mohammad Afzaala, M. Azad Mallika, Chinh Q. Nguyen, Paul O’Brien and P. John Thomas

Coordination Chemistry Reviews, Volume 251, Issues 13-14, July 2007, Pages 1878-1888

Abstract: Recent results from our laboratory on the synthesis of single-source precursor (SSP) molecules and their use for the making nanomaterials by different techniques are presented. The precursors include dichalcogenoimidophosphinate, dialkylchalcogenophosphates, ionic dialkyldiselenophosphinate salts and dithiocarbamates. Solution phase thermal decomposition, chemical vapour deposition (CVD) and interfacial deposition techniques have been used to obtain nanocrystals and thin films of semiconducting material.

5, Novel inorganic rings and materials deposition

Chinh Q. Nguyen, Mohammad Afzaala, Mohammad A. Malika, Madeleine Helliwella, Jim Rafterya and Paul O’Brien

Journal of Organometallic Chemistry, Volume 692, Issue 13, 1 June 2007, Pages 2669-2677

Abstract: This paper discusses the use of two relative unexploited classes of molecules based on imino-dialkylphosphinate [(EPR2)2NH] (E = Se or Te) and dialkyldiselenophosphinate [HNEt3][R2PSe2] and subsequently, their potential for the deposition of useful materials as either thin films or nanoparticles. The structural properties of the materials obtained were elucidated by means of X-ray powder diffraction, scanning electron microscope and transmission electron microscope.