Supertetrahedral decametallic Ni(<scp>ii</scp>) clusters directed by μ<sub>6</sub>-tris-alkoxides
作者:Rachel Shaw、Ian S. Tidmarsh、Rebecca H. Laye、Barbara Breeze、Madeleine Helliwell、Euan K. Brechin、Sarah L. Heath、Mark Murrie、Stefan Ochsenbein、Hans-Ulrich Güdel、Eric J. L. McInnes
DOI:10.1039/b403876b
日期:——
We report the syntheses, structures and magnetic properties of two decametallic Ni(II) clusters with unprecedented supertetrahedral cores, stabilised by the (hitherto unobserved) μ6-coordination modes of the tris-alkoxides MeC(CH2O)3}3â and C6H9O3}3â.
The Synthesis of Chiral Allyl Carbamates via Merger of Photoredox and Nickel Catalysis
作者:Mateusz Garbacz、Sebastian Stecko
DOI:10.1002/adsc.202000404
日期:2020.8.4
A mild, and versatile, organophotoredox/Ni‐mediated protocol was developed for the direct preparation of diverse, enantioenriched allyl carbamates. The reported approach represents a significant departure from classical step‐by‐step synthesis of allyl carbamates. This dual photoredox/Ni based strategy offers unrivalled capacity for convergent unification of readily available alkyl halides and chiral
characterizations were performed on thin (50 nm) and thick (335 nm) layers. The total specific conductivity, which is predominantly electronic, was found to be larger for the thinner films measured (50 nm), probably due to the effect of the strain present in the layers. Those thinfilms (50 nm) showed values even larger than those observed for single crystals and, to our knowledge, are the largest
Phonon Raman scattering of perovskite LaNiO3 thin films
作者:N. Chaban、M. Weber、S. Pignard、J. Kreisel
DOI:10.1063/1.3464958
日期:2010.7.19
investigation of perovskite-type LaNiO3thinfilms by Ramanscattering in both various scattering configurations and as a function of temperature. The room-temperature Raman spectra and the associated phonon mode assignment provide reference data for phonon calculations and for the use of Ramanscattering for structural investigations of LaNiO3, namely, the effect of strain in thinfilms or heterostructures. The
Ultrasound assisted synthesis of metal-1,3-diketonates
作者:Nitin S. Nandurkar、Dinkar S. Patil、Bhalchandra M. Bhanage
DOI:10.1016/j.inoche.2008.03.014
日期:2008.7
A simple and convenient methodology for complex formation of wide variety of transition metals/alkaline earth metals with 1,3-diketones under sonication have been reported. The present method showed a significant rate enhancement for metal complex formation in the presence of ultrasound as compared to their silent counterpart, thereby providing higher yields. The role of ultrasound and solvent were also discussed. Moreover, the metal- 1,3-diketonates were characterized by various techniques like FT-IR, (1)H NMR, mass spectrometry and magnetic susceptibility. (c) 2008 Elsevier B.V. All rights reserved.