Now showing items 1-20 of 25

  • 1,2-Bis(2-bromobenzyl)diselane 

    Hua, Guoxiong; Fuller, Amy L.; Slawin, Alexandra M. Z.; Woollins, J. Derek (2010-10) - Journal article
    In the title compound, C14H12Br2Se2, the Se-Se bond length [2.3034 (9) angstrom] is similar to those in diphenyl diselenide [2.3066 (7) and 2.3073 (10) angstrom] and shorter than that in 1,8-diselenonaphthalene [2.0879 (8) ...
  • 1,5,6-Triphenyl-8-oxa-7-selena-6-phosphabicyclo[3.2.1]octane-6-selone 

    Hua, Guoxiong; Li, Yang; Slawin, Alexandra Martha Zoya; Woollins, J Derek (2008-01) - Journal article
    The structure of the title compound, C23H21OPSe2, consists of fused puckered five- and six-membered rings, PSeC2O and C5O, respectively, with a C2O bridgehead. The C5O ring adopts a chair conformation, whilst the C2PSeO ...
  • 1-(3-Phenylpropyl)urea 

    Li, Yang; Hua, Guoxiong; Slawin, Alexandra M. Z.; Woollins, J. Derek (2009-10) - Journal article
    In the crystal of the title compound, C10H14N2O, double supramolecular layers of PhCH2CH2CH2NHC(O)NH2 are formed parallel to the bc plane by intermolecular N-H center dot center dot center dot O hydrogen bonding, with ...
  • 2,2 '-o-Phenylenediacetonitrile 

    Li, Yang; Hua, Guoxiong; Slawin, Alexandra M. Z.; Woollins, J. Derek (2009-11) - Journal article
    In the title compound, NCCH2C6H4CH2CN, the bond lengths and angles are within normal ranges. The benzene ring makes dihedral angles of 4.94 (8) and 77.04 (8)degrees with the C-C-C-N mean planes. Weak non-conventional C-H ...
  • 2,4,5-Triphenyl-1,3,2-dioxaphospholan-2-one 

    Cordes, David B.; Hua, Guoxiong; Slawin, Alexandra M. Z.; Woollins, J. Derek (2011-07) - Journal article
    The dioxaphospholane ring in the title compound, C20H17O3P, adopts an envelope conformation about one of the ring carbons. The benzene rings of the compound do not form face-to-face pi-pi interactions, instead weak C-H ...
  • 2-(4-Fluorophenyl)-3-methyl-1H-indole 

    Cordes, David B.; Hua, Guoxiong; Slawin, Alexandra M. Z.; Woollins, J. Derek (2011-07) - Journal article
    The indole N-H hydrogen in the title compound, C15H12FN, does not display classical hydrogen bonding. Rather it forms an interaction with the pi system of an adjacent indole, resulting in weakly interacting chains along ...
  • 2-Phenyl-5-(p-tolyl)-1,3,4-oxadiazole 

    Cordes, David B.; Hua, Guoxiong; Slawin, Alexandra M. Z.; Woollins, J. Derek (2011-07) - Journal article
    The title compound, C15H12N2O, adopts the expected near-planar geometry, the phenyl and tolyl rings being inclined relative to the oxadiazole ring by 3.8 (3) and 8.3 (2)degrees, respectively. This allows adjacent molecules ...
  • Ammonium Phenylphosphonamidodiselenoates and Phenylphosphonamidodi-selenoic Diamides from the Selenation of Primary and Secondary Amines 

    Hua, Guoxiong; Randall, Rebecca A. M.; Slawin, Alexandra M. Z.; Woollins, J. Derek (2011-10) - Journal article
    By reacting two equivalents of primary or secondary amines with 2,4-bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide (Woollins' reagent) at room temperature a series of new ammonium phenylphosphonamidodiselenoates 1-7 ...
  • Bis(phenylphosphonic) anhydride 

    Li, Yang; Hua, Guoxiong; Slawin, Alexandra M. Z.; Woollins, J. Derek (2009-11) - Journal article
    The asymmetric unit of the title compound, C12H12O5P2, contains four independent molecules, generating two dimers via pairs of intermolecular O-H center dot center dot center dot O hydrogen bonds, forming R-2(2) (8) rings. ...
  • An efficient route for the synthesis of phosphorus-selenium macro-heterocycles 

    Hua, Guoxiong; Slawin, Alexandra M. Z.; Randall, Rebecca A. M.; Cordes, David B.; Crawford, Luke; Buehl, Michael; Woollins, J. Derek (2013-04) - Journal article
    Four-membered ring [PhP(Se)(mu-Se)](2) (Woollins' reagent, WR) reacts with disodium alkenyl-diols followed by in situ ring-closure reaction with appropriate dibromoalkanes affording a series of unusual nine-to fifteen-membered ...
  • Efficient synthesis of novel chalcogen-containing derivatives of DNA nucleobases 

    Hua, Guoxiong; Du, Junyi; Cordes, David Bradford; Slawin, Alexandra Martha Zoya; Woollins, J Derek (2015-03-25) - Journal article
    The formation of a library of chalcogen-containing DNA nucleobase derivatives is presented. Reacting easily accessible 9-(2-bromoethyl)adenine with chalcogen-containing nucleophilic reagents led to a series of novel ...
  • Facile synthesis and structure of novel 2,5-disubstituted 1,3,4-selenadiazoles 

    Hua, Guoxiong; Li, Yang; Fuller, Amy; Slawin, Alexandra Martha Zoya; Woollins, J Derek (2009-04) - Journal article
    The reaction of hydrazide with carbonyl chloride in the presence of sodium carbonates leads to the corresponding 1,2-diacylhydrazines [ 1a – t , R1C(O)NHNHC(O)R2, R1 = aryl, R2 = aryl or alkyl] in moderate to excellent ...
  • Fluorinated Phosphorus-Selenium Heteroatom Compounds : Phenylphosphonofluorodiselenoic Salts, Adducts, and Esters 

    Hua, Guoxiong; Du, Junyi; Slawin, Alexandra M. Z.; Woollins, J. Derek (2013-07-15) - Journal article
    2,4-Bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide, [PhP(Se)(mu-Se)](2), Woollins' reagent (WR), reacts with dry KF or tetrabutylammonium fluoride (TBAF) at room temperature generating the corresponding potassium and ...
  • From phenylalkylcyanamides to heterocyclic selenazadiphospholaminediselenides and carbamidoyl(phenyl) phosphinodiselenoic acids 

    Hua, Guoxiong; Zhang, Qingzhi; Li, Yang; Slawin, Alexandra Martha Zoya; Woollins, J Derek (2008-11) - Journal article
    The reaction of 2,4-bis(phenyl)-1,3-diselenadiphosphetane-2,4- diselenide (Woollins' Reagent, WR) with phenylalkyl-cyanamides (RR'NC N, R = PhCH2CH2, R' = CH3 and R = PhCH2CH2CH2, R' = H) in refluxing toluene led to novel ...
  • Novel five- to ten-membered organoselenium heterocycles from the selenation of aromatic diols 

    Hua, Guoxiong; Fuller, Amy; Slawin, Alexandra M. Z.; Woollins, J Derek (2010-05) - Journal article
    Reaction of Woollins' reagent ― WR , 2,4-bis(phenyl)-1,3-diselenadiphosphetane 2,4-diselenide [{PhP(Se)(μ-Se)}2] ― with aromatic diols in refluxing toluene afforded a series of novel five- to ten-membered phosphorus-selenium ...
  • Novel fluorinated phosphorus–sulfur heteroatom compounds : synthesis and characterization of ferrocenyl- and aryl-phosphonofluorodithioic salts, adducts, and esters 

    Hua, Guoxiong; Du, Junyi; Woollins, J Derek; Surgenor, Brian Andrew; Slawin, Alexandra Martha Zoya (2015-07-03) - Journal article
    A series of novel ferrocenyl- and aryl-phosphonofluorodithioic salts, adducts, and esters has been prepared. The reaction of 2,4-diferrocenyl-1,3,2,4-diathiadiphosphetane 2,4-disulfide {[FcP(μ-S)S]2, FcLR} with dry KF or ...
  • Novel organo phosphorus-selenium heteroatom compounds from selenation of diamines 

    Hua, Guoxiong; Randall, Rebecca Amy Michele; Slawin, Alexandra Martha Zoya; Woollins, J Derek (2013-07-01) - Journal article
    Reaction of Woollins' reagent (WR) with trans-1,2-cyclohexanediamine or 1,3-cyclohexanediamine, followed by treatment with o-xylylenedibromide in THF at room temperature surprisingly led to 3-phenyl-1,5-dihydrobenzo[e][1 ...
  • Octaselenocyclododecane 

    Hua, Guoxiong; Griffin, John M.; Ashbrook, Sharon E.; Slawin, Alexandra M. Z.; Woollins, J. Derek (2011-04-26) - Journal article
  • Organo Phosphorus-Selenium Heterocycles Derived from Haloalkanols and Alkenes 

    Hua, Guoxiong; Fuller, Amy L.; Slawin, Alexandra M. Z.; Woollins, J. Derek (2012-10) - Journal item
    Treating Woollins' reagent with an equimolar amount of sodium 2-bromoalkanolates (which were prepared in situ from the reaction of bromoalkanol and NaH) in THF gave five- or six-membered PSeOCn (n = 2 or 3) phosphorus-selenium ...
  • Organophosphorus-Selenium Heteroatom Derivatives from Selenation of Primary/Secondary Amines and Haloalkanes/Dihaloalkanes 

    Hua, Guoxiong; Arachchige, Kasun S. A.; Slawin, Alexandra M. Z.; Woollins, J. Derek (2013-11) - Journal article
    Reaction of 2,4-bis(phenyl)-1,3-diselenadiphosphetane-2,4-diselenide (Woollins' reagent) with four equivalents of primary/secondary amines led to a series of ammonium phenylphosphonamido-diselenoates or phenylphosphonami ...