Malcolm L. H. Green

Bio: Malcolm L. H. Green is an academic researcher from University of Oxford. The author has contributed to research in topics: Carbon nanotube & Cyclopentadienyl complex. The author has an hindex of 82, co-authored 800 publications receiving 31121 citations. Previous affiliations of Malcolm L. H. Green include Gas Technology Institute & University of Illinois at Urbana–Champaign.

Activation of linear and cyclic saturated hydrocarbons involving arene–rhenium compounds: crystal structure of µ-dihydrido-µ-neopentylidene-bis(η-benzene)-dirhenium

Abstract: Co-condensation of rhenium atoms with a mixture of benzene and an alkane, RH = ethane, propane, butane, 2-methylpropane, neopentane, tetramethylsilane, cyclopentane, or cyclohexane gives the compounds [(η-C6H6)Re(η-H)2(η-CR′R″)Re(η-C6H6)], where CR′R″= CHMe, CHEt and CMe2, CHPrn and CMeEt, CH(CHMe2), CHBut, CHSiMe3, cyclopentylidene, or cyclohexdylidene respectively: the crystal structure of the compound where CR′R″= CHBut has been determined.

Preparations and reactions of bis(η-cyclopentadienyl) compounds containing covalent aluminium–molybdenum or –tungsten bonds

Abstract: The dihydride [Mo(η-C5H5)2H2] reacts with AlMe3 to give compounds (II) and (III) containing Mo–Al bonds Compound (II) reacts with allyl chloride to give the compound [Mo(η-C3H5)(η-C5H5)2][PF6] Following treatment of compound (II) with carbon dioxide, the carbonyl compound [MoBr(η-C5H5)2(CO)][PF6] may be isolated The dihydride [W(η-C5H5)2H2] reacts with AlMe3 to give a related tungsten–aluminium compound The compounds and reactions are discussed

Preparations and reactions of bis(η-cyclopentadienyl) compounds of molybdenum or tungsten containing covalent bonds to magnesium

Abstract: The dihydride [Mo(η-C5H5)2H2] reacts with bromo(cyclohexyl)magnesium to give the cyclic dimer [H(η-H5C5)2-Mo{µ-( H11C6)MgBr2Mg(OEt2)}2Mo(η-C5H5)2H], (III). The Grignard reagents MgRX (RX = PriBr, BunBr, Mel, or PhBr) give generally similar products. Derivative (III) reacts with carbon dioxide, carbon monoxide, benzyl bromide, or butadiene to give the compounds [Mo(η-C5H5)2(CO)], [Mo(η5-C5H5)(η3-C5H7)(CO)2], [Mo(η-C5H5)2(CH2Ph)2], and [Mo(η3-C4H7)(η-C5H5)2][PF6] respectively. The isopropyl analogue of (III) reacts similarly. Also, with iodomethane, the compound [MoMe(η-C5H5)2I] is formed. The methyl and phenyl analogues of (III) react with benzyl bromide to give [MoMe(η-C5H5)2(CH2Ph)] and [Mo(η-C5H5)2Ph(CH2Ph)] respectively. The dihvdride [W(η-C5H5)2H2] reacts with the Grignard reagents MgRX (RX = Mel, Pri, or PhBr) to give tungsten–magnesium compounds which appear to be generally similar to the molybdenum adducts.

Some chemistry of ethyltetramethylcyclopentadienylcobalt: arene, ethylene, butadiene, ammine, tertiary phosphine, and chloro-derivatives

Abstract: Tri-n-butyl(ethyltetramethylcyclopentadienyl)tin, Sn(etmcp)Bun3, reacts with cobalt(II) chloride to give, after treatment with chlorine, [{Co(etmcp)Cl(µ-Cl)}2] and [Co3(etmcp)2Cl6]. Using these compounds as precursors, many derivatives of the Co(η-etmcp) system have been prepared; examples are [(η-etmcp)Co(µ-Cl)3Co(η-etmcp)][FeCl4], [Co(η-etmcp)(PPh3)Cl2], [Co(η-etmcp)L2Cl][PF6][L2= Ph2P(CH2)2PPh2, or (PMe2Ph)2], [Co(η-etmcp)L3][PF6][L3=(NH3)3, (MeCN)3, (MeCN)2(Me2CNH), (CH2CHCN)3, η-benzene, or η-toluene], and [Co(η-etmcp)L2][L2=(η-C2H4)2, butadiene, or 1,5-C8H12].

Single-shell carbon nanotubes of 1-nm diameter

Abstract: CARBON nanotubes1 are expected to have a wide variety of interesting properties. Capillarity in open tubes has already been demonstrated2–5, while predictions regarding their electronic structure6–8 and mechanical strength9 remain to be tested. To examine the properties of these structures, one needs tubes with well defined morphologies, length, thickness and a number of concentric shells; but the normal carbon-arc synthesis10,11 yields a range of tube types. In particular, most calculations have been concerned with single-shell tubes, whereas the carbon-arc synthesis produces almost entirely multi-shell tubes. Here we report the synthesis of abundant single-shell tubes with diameters of about one nanometre. Whereas the multi-shell nanotubes are formed on the carbon cathode, these single-shell tubes grow in the gas phase. Electron diffraction from a single tube allows us to confirm the helical arrangement of carbon hexagons deduced previously for multi-shell tubes1.

Chemistry and properties of nanocrystals of different shapes.

Abstract: The interest in nanoscale materials stems from the fact that new properties are acquired at this length scale and, equally important, that these properties * To whom correspondence should be addressed. Phone, 404-8940292; fax, 404-894-0294; e-mail, mostafa.el-sayed@ chemistry.gatech.edu. † Case Western Reserve UniversitysMillis 2258. ‡ Phone, 216-368-5918; fax, 216-368-3006; e-mail, burda@case.edu. § Georgia Institute of Technology. 1025 Chem. Rev. 2005, 105, 1025−1102

Carbon Nanotubes: Present and Future Commercial Applications

Abstract: Worldwide commercial interest in carbon nanotubes (CNTs) is reflected in a production capacity that presently exceeds several thousand tons per year. Currently, bulk CNT powders are incorporated in diverse commercial products ranging from rechargeable batteries, automotive parts, and sporting goods to boat hulls and water filters. Advances in CNT synthesis, purification, and chemical modification are enabling integration of CNTs in thin-film electronics and large-area coatings. Although not yet providing compelling mechanical strength or electrical or thermal conductivities for many applications, CNT yarns and sheets already have promising performance for applications including supercapacitors, actuators, and lightweight electromagnetic shields.

Nanoparticle therapeutics: an emerging treatment modality for cancer

Abstract: Nanoparticles — particles in the size range 1–100 nm — are emerging as a class of therapeutics for cancer. Early clinical results suggest that nanoparticle therapeutics can show enhanced efficacy, while simultaneously reducing side effects, owing to properties such as more targeted localization in tumours and active cellular uptake. Here, we highlight the features of nanoparticle therapeutics that distinguish them from previous anticancer therapies, and describe how these features provide the potential for therapeutic effects that are not achievable with other modalities. While large numbers of preclinical studies have been published, the emphasis here is placed on preclinical and clinical studies that are likely to affect clinical investigations and their implications for advancing the treatment of patients with cancer.

Chemistry of Carbon Nanotubes

Abstract: Department of Materials Science, University of Patras, 26504 Rio Patras, Greece, Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vass. Constantinou Avenue, 116 35 Athens, Greece, Institut de Biologie Moleculaire et Cellulaire, UPR9021 CNRS, Immunologie et Chimie Therapeutiques, 67084 Strasbourg, France, and Dipartimento di Scienze Farmaceutiche, Universita di Trieste, Piazzale Europa 1, 34127 Trieste, Italy