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Dinitrogen Activation Upon Reduction of a Triiron(II) Complex

11-12-2014 | Yousoon Lee, Forrest T. Sloane, Geneviève Blondin, Khalil A. Abboud, Ricardo García‐Serres, Leslie J. Murray, Angewandte Chemie International Edition, 2014

Abstract Reaction of a trinuclear iron(II) complex, Fe3Br3L (1), with KC8 under N2 leads to dinitrogen activation products (2) from which Fe3(NH)3L (2‐1; L is a cyclophane bridged by three β‐diketiminate arms) was characterized by X‐ray crystallography. 1H NMR spectra of the protonolysis ...

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X-ray Mapping of Nanoparticle Superlattice Thin Films

11-12-2014 | Benjamin T. Diroll; Vicky V. T. Doan-Nguyen; Matteo Cargnello; E. Ashley Gaulding; Cherie R. Kagan; Christopher B. M ..., ACS Nano, 2014

We combine grazing-incidence and transmission small-angle X-ray diffraction with electron microscopy studies to characterize the structure of nanoparticle films with long-range order. Transmission diffraction is used to collect in-plane diffraction data from single grains and locally aligned ...

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Neutral diiron(III) complexes with Fe2([small mu ]-E)2 (E = O, S, Se) core structures: reactivity of an iron(I) dimer towards chalcogens

10-12-2014 | Lea Fohlmeister; Kuduva R. Vignesh; Florian Winter; Boujemaa Moubaraki; Gopalan Rajaraman; Rainer Pöttgen; Keith S. ..., Dalton Transactions, 2014

Three neutral bis(μ-chalcogenido)diiron(iii) complexes, [{(N,N′-Pipiso)Fe(μ-E)}2] (Pipiso− = [(DipN)2C(cis-2,6-Me2NC5H8)]−, (Dip = C6H3Pri2-2,6; E = O, S or Se) have been prepared by reactions of the iron(i) dimer [{(μ-N,N′-Pipiso)Fe}2] with O2, S8 or Se∞. Treating the μ-selenido compound ...

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A fluoride bridged {CrIII4DyIII4} single molecule magnet

09-12-2014 | Stuart K. Langley; Craig M. Forsyth; Boujemaa Moubaraki; Keith S. Murray, Dalton Transactions, 2014

The synthesis of a heterometallic octanuclear {CrIII4DyIII4} complex containing fluoride bridges displays SMM behaviour, with highly coercive magnetic hysteresis loops. Intriguingly multiple relaxation processes are revealed and the relaxation times are found to be longer compared to those of an ...

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[Policy Forum] Using and improving the social cost of carbon

05-12-2014 | William Pizer; Matthew Adler; Joseph Aldy; David Anthoff; Maureen Cropper; Kenneth Gillingham; Michael Greenstone; B ..., Science , 2014

Regular, institutionalized updating and review are essential Authors: William Pizer, Matthew Adler, Joseph Aldy, David Anthoff, Maureen Cropper, Kenneth Gillingham, Michael Greenstone, Brian Murray...

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Towards Maintenance‐Free Biosensors for Hundreds of Bind/Release Cycles

04-12-2014 | Radislav A. Potyrailo, Anthony J. Murray, Nandini Nagraj, Andrew D. Pris, Jeffrey M. Ashe, Milos Todorovic, Angewandte Chemie International Edition, 2014

Abstract A single aptamer bioreceptor layer was formed using a common streptavidin–biotin immobilization strategy and employed for 100–365 bind/release cycles. Chemically induced aptamer unfolding and release of its bound target was accomplished using alkaline solutions with high salt ...

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Abrupt two-step and symmetry breaking spin crossover in an iron(III) complex: an exceptionally wide [LS–HS] plateau

03-12-2014 | David J. Harding; Wasinee Phonsri; Phimphaka Harding; Keith S. Murray; Boujemaa Moubaraki; Guy N. L. Jameson, Dalton Transactions, 2014

[Fe(qsal-Br)2]NO3·2MeOH is reported which undergoes abrupt two step symmetry breaking spin crossover, T½(1st step) = 136 K and T½(2nd step) = 232 K with a hysteresis of 16 K and 5 K, respectively, and an unprecedented [HS–LS] plateau of 96 K.

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A fluoride bridged {CrIII4DyIII4} single molecule magnet

02-12-2014 | Keith S. Murray; Stuart Langley; Boujemaa Moubaraki; Craig M Forsyth, Dalton Transactions, 2014

The synthesis of a heterometallic octanuclear {CrIII4DyIII4} complex containing fluoride bridges displays SMM behaviour, with highly coercive magnetic hysteresis loops. Intriguingly multiple relaxation processes are revealed and the relaxation times are found to be longer compared to those of an ...

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Densovirus associated with sea-star wasting disease and mass mortality [Microbiology]

02-12-2014 | Ian Hewson; Jason B. Button; Brent M. Gudenkauf; Benjamin Miner; Alisa L. Newton; Joseph K. Gaydos; Janna Wynne; Cat ..., Proceedings of the National Academy of Sciences current issue, 2014

Populations of at least 20 asteroid species on the Northeast Pacific Coast have recently experienced an extensive outbreak of sea-star (asteroid) wasting disease (SSWD). The disease leads to behavioral changes, lesions, loss of turgor, limb autotomy, and death characterized by rapid degradation ...

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