Browsing Chemistry (Scholarly Publications) by Author "DRAPER, SYLVIA MARY"
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Benzylic Oligothioethers as Ditopic Ligands for Group 6 Transition Metal Carbonyls
DRAPER, SYLVIA MARY (2000)The co-ordination preferences of a family of novel thioethers based on (alkylsulfanylmethyl)benzene were examined. The alkyl chain length and the number and position of the thioether substituents were varied. The ligands ... -
Boride cluster fusion via an M4-unit (M=Cu, Ag): molecular structure of [PPN][{Ru4H(CO)12B}2Cu4(m-Cl)][Cl]
DRAPER, SYLVIA MARY (1992)The reaction of [ppn][Ru4H(CO)12BH] with [Cu(MeCN)4][BF4] in the presence of [ppn][Cl] yields [ppn][{Ru4H(CO)12B}2-Cu4(?-Cl)][Cl], which has been structurally characterised; the introduction of silver in place of copper ... -
Ferrocenylalkynes as ligands in transition metal complexes
DRAPER, SYLVIA MARY (2001)Several ferrocenylalkynes have been prepared and their reaction with dicobalt octacarbonyl led to the formation of [Co2(CO)6(?-?2 ? ?2-ethynylferrocene)] 1, [Co2(CO)6(?-?2 ? ?2-1,4-bis(ferrocenyl)butadiyne)] 2, [(Co2(CO)6)2(?-?2 ... -
Formation of polyheterocyclic systems by reaction of 2-imino-4-methyl-2H-1-benzopyran-3-carbonitrile with active methylene compounds
DRAPER, SYLVIA MARY (1996)2-Imino-4-methyl-2H-1-benzopyran-3-carbonitrile undergoes [1,5] tautomerism in solution to 2-amino-4-methylidene-4H-1-benzopyran-3-carbonitrile. Reaction with one equivalent of compounds containing a reactive methylene ... -
Formation of Polysubstituted Pyridin-2-one Derivatives by Michael Addition of 3-Oxobutanamide to ?,?-Ethylenic Ketones and Amides
DRAPER, SYLVIA MARY; MC MURRY, THOMAS (1997)Reaction of 3-oxobutanamide with 4-phenylbut-3-en-2-one and with 3-aryl-2-cyanoprop-2-enamides and related compounds affords new di-, tetra- and hexa-hydropyridin-2-one derivatives, the degree of unsaturation of the product ... -
Intermolecular interactions of extended aromatic ligands: the synchrotron molecular structure of [Ru(bpy)2(N-HSB)].2PF6 and [Ru(bpy)2(N-1/2HSB)].2PF6
DRAPER, SYLVIA MARY (Royal Society of Chemistry, 2006)The processes by which molecular systems undergo aggregation have received much attention because they are key to the delivery of pre-determined supramolecular structures at the molecular design stage. The intermolecular ... -
Mono- and di-dentate tertiary phosphine and monodentate tertiary phosphite derivatives of [Ru4H(CO)12BH2]
DRAPER, SYLVIA MARY (1995)The reaction of the butterfly cluster [Ru4H(CO)12BH2] with a range of tertiary phosphines and diphosphines and with a large excess of trimethyl phosphite have been explored. Twenty-two derivatives of the general types ... -
The N-carbamoyl squaramide dimer: A compact, strongly associated H- bonding motif
DRAPER, SYLVIA MARY (1999)N-Carbamoyl squaramides 3, readily available from dialkyl squarate 5, form hydrogen-bonded dimers in solution and in non-polar organic solvents; in CDCl3 they show no significant dissociation down to concentrations of ?0.5 mM. -
N-substituted Pyridazines as Building Blocks in Novel Supramolecular Architectures
DRAPER, SYLVIA MARY; VARGHESE, SREEJA (2009)A series of mono, 1,4-di and 1,3,5-tri 4-substituted 3,6-di(2-pyridyl)pyridazines were analyzed to evaluate the substituent and steric effects in the crystal packing. -
Nitrile and non-nitrile pyridine products from the reaction of 2-cyano- 3-(x-nitrophenyl)prop-2-enamides with methyl 3-oxobutanoate
DRAPER, SYLVIA MARY; MC MURRY, THOMAS (1999)The reaction of 2-cyano-3-(x-nitrophenyl)prop-2-enamides with methyl 3-oxobutanoate affords methyl 4-aryl-3-cyano-6-methyl-2-oxo-1,2-dihydropyridine-5-carboxylates, methyl 4-aryl-5-cyano-2-hydroxy-2-methyl-6-oxopiperidin ... -
Palladium bis(phosphinite) 'PCP'-pincer complexes and their application as catalysts in the Suzuki Reaction
DRAPER, SYLVIA MARY (2000)Palladium complexes of inexpensive, easily synthesised bis(phosphinite) `PCP ?-pincer ligands show good activity in the Suzuki coupling of deactivated and sterically hindered aryl bromides -
Photochemical [2 + 2] cycloaddition reactions of 6-alkenyl-3-phenylcyclohex-2-en-1-ones: using biradical conformation control to account for exceptions to the "rule of five"
DRAPER, SYLVIA MARY (2011)A series of 6-alkenyl-3-phenylcyclohex-2-enones has been synthesised and the structures of the products obtained from them on irradiation have been determined. The 6-propenyl compounds afforded a tricyclic `parallel? [2 + ... -
Reactions of 2-Oxo-2H-1-benzopyran-3-carbonitrile
DRAPER, SYLVIA MARY; MC MURRY, THOMAS (1998)Synthetic reactions of2-oxo-2H -1-benzopyran-3-carbonitrile afford productswhich establish that partial or complete cleavage of the startingmaterial occurs in the course of reaction. -
Rhodium and Palladium Complexes of a Pyridyl-centred Polyphenylene.
DRAPER, SYLVIA MARY (2008)2-(2? pyridyl)-3,4,5,6-tetraphenylpyridine 2 (HL), a ligand with both N,N-bidentate and N,N,C-terdentate coordination potential, was prepared in excellent yield by the Diels-Alder [2+4] cycloaddition of 2-cyanopyridine and ... -
Switching and tuning organic solid state luminescence via a supramolecular approach
DRAPER, SYLVIA MARY; VARGHESE, SREEJA (2009)Unusual intermolecular interactions of organic luminescent acid, 2-cyano-3(4-(diphenylamino)phenyl)acrylic acid (CDPA), with amines lead to the formation of supramolecular luminescence systems with switchable and tunable ... -
Terpyridine-fused Polyaromatic Hydrocarbons generated via Cyclodehydrogenation and used as Ligands in Ru(II) Complexes
DRAPER, SYLVIA MARY (2012)A series of novel fused 4?-substituted 2,2? : 6?,2??-terpyridine ligands and their ruthenium(II) complexes were prepared. The unusual 4?-substituents comprised 2,3,4,5-pentaphenylbenzene and its tert-butyl derivative (1 ... -
Thienyl directed polyaromatic C-C bond fusions: S-doped hexabenzocoronenes
DRAPER, SYLVIA MARY (2011)With a view to combining the desirable electronic and photochemical properties of hexabenzocoronene (HBC) and the C?C bond forming capabilities of thiophenes, 1-(3-thienyl)- 2,3,4,5,6-penta(4- tert -butyl-phenyl)benzene ... -
Tricarbonyl (h6-pyridine)chromium (0)
DRAPER, SYLVIA MARY (1994)The molecular structure of tricarbonyl(rl6-pyridine) - chromium(0), [Cr(CO)3(C5H5N)], is presented here. The Cr atom is bound to the pyridine ring via the 7r-electron system and is situated dir ...