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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.


Papers
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Journal ArticleDOI
TL;DR: In this article, the mechanisms of photoinduced insertions of tungsten into aromatic and aliphatic C-H bonds are discussed, and the photoinduced reaction between [W(η-C5H5)2H2] and toluene, a to-luene-mesitylene mixture, and methyl propionate are also described.
Abstract: Photolysis of solutions of [W(η-C5H5)2H2] in fluorobenzene, o-xylene, anisole, p-chlorotoluene, p-xylene, mesitylene, p-methylanisole, and methyl benzoate gives the compounds [W(η-C5H5)2H(C6H4F-3 and -4)], [W(η-C5H5)2H(C6H3Me2-3,4)], [W(η-C5H5)2H(C6H4OMe-4)], [W(η-C5H5)2Cl(C6H4Me-4)], [W(η-C5H5)2(CH2C6H4Me-4)2], [W(η-C5H5)2(CH2C6H3Me2-3,5)2], [W(η-C5H5)2(CH2C6H4OMe-4)2], and [W(η-C5H5)2H(C6H4CO2Me-3 and -4)] together with [W(η-C5H5)2H(OCOPh)], respectively. Thermal decomposition of [W(η-C5H5)2H(Me)] in mesitylene gives [W(η-C5H5)2H(CH2C6H3Me2-3,5)]. Photolysis of this compound in p-xylene gives [W(η-C5H5)2(CH2C6H4Me-4)(CH2C6H3Me2-3,5)]. Photolysis of [W(η-C5H5)2H2] in tetra-methylsilane gives cis- and trans-[H(η-C5H5)W(σ: η5-C5H4)2W(η-C5H5)(CH2SiMe3)]. The photoinduced reaction between [W(η-C5H5)2H2] and toluene, a toluene–mesitylene mixture, and methyl propionate are also described. The mechanisms of these photoinduced insertions of tungsten into aromatic and aliphatic C–H bonds are discussed.

29 citations

Journal ArticleDOI
TL;DR: In this article, low temperature NMR studies indicate that the dicationic salts [Zr(η-C5H4CMe2C6H4Me-p)2]2+[MeB(C6F5)3]

29 citations

Journal ArticleDOI
TL;DR: The metallocyclobutane derivatives [W(η5-C5H5)2(-CH2CHR2CHR1-)], where R 1= R2= H, R 1 = Me, R 2 = R 2, or R 3 = Me or R 4 = H, gave rise to the olefins CH 2CHR1 and CH 2 CHR2 in good yield as mentioned in this paper.
Abstract: Irradiation of the metallocyclobutane derivatives [W(η5-C5H5)2(-CH2CHR2CHR1-)], where R1= R2= H, R1= H, R2= Me, or R1= Me, R2= H, gives rise to the olefins CH2CHR1 and CH2CHR2 in good yield.

29 citations

Journal ArticleDOI
TL;DR: In this article, photolysis of metallacyclobutane compounds yields olefins with fewer carbon atoms than in the initial METALACLOBUTANE system.

29 citations

Journal ArticleDOI
TL;DR: The new imido compounds [M(η-C5H4R)Cl2(NR′)] and [Mo(NBut)Cl(PMe3)3] are synthesized; * indicates that the crystal structure has been determined.
Abstract: The new imido compounds [M(η-C5H4R)Cl2(NR′)]*(M = Mo, R = H, R′= But, Prn or Ph; M = Mo, R = Me, R′= But or Ph; M = W, R = H, R′= But), [Mo (η-C5H4R)Cl(L)(NR′)](R = H, R′= But, L =η-C2H4, or η-C2Me2; R = Me, R′= But, L = C2H4*; R = H, R′= Ph, L =η-C2Me2), [{Mo(η-C5H4R)(η-C2H4)(NBut)}2Hg]*(R = H, Me), [Mo (NBut)Cl2(PMe3)3], [Mo(η-C5H5)Cl3(NBut)] and the π-allyl complex [Mo(η-C5H4Me)(η-C3H5)(NBut)] are synthesised; *indicates that the crystal structure has been determined.

29 citations


Cited by
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Journal ArticleDOI
Sumio Iijima1, Toshinari Ichihashi1
17 Jun 1993-Nature
TL;DR: In this article, the authors reported the synthesis of abundant single-shell tubes with diameters of about one nanometre, whereas the multi-shell nanotubes are formed on the carbon cathode.
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.

8,018 citations

Journal ArticleDOI
TL;DR: The interest in nanoscale materials stems from the fact that new properties are acquired at this length scale and, equally important, that these properties are equally important.
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

6,852 citations

Journal ArticleDOI
01 Feb 2013-Science
TL;DR: 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.
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.

4,596 citations

Journal ArticleDOI
TL;DR: The features of nanoparticle therapeutics that distinguish them from previous anticancer therapies are highlighted, and how these features provide the potential for therapeutic effects that are not achievable with other modalities are described.
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.

3,975 citations

Journal ArticleDOI
TL;DR: Department of Materials Science, University of Patras, Greece, Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, and Dipartimento di Scienze Farmaceutiche, Universita di Trieste, Piazzale Europa 1, 34127 Triesteadays.
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

3,886 citations