نتایج جستجو برای: inner transition elements

تعداد نتایج: 602988  

Journal: :The Journal of chemical physics 2012
C Schuster J Klimke U Schwingenschlögl

The transmission of transparent colored ceramics based on Al(2)O(3) doped with light transition metals is measured in the visible and infrared range. To clarify the role of the dopands we perform ab initio calculations. We discuss the electronic structure and present optical spectra obtained in the independent particle approximation. We argue that the gross spectral features of Co- and Ni-doped...

Journal: :Chemical communications 2009
Toshihiko Iwayama Yoshihiro Sato

A transition metal-catalyzed [2 + 2 + 2] cycloaddition between alpha,omega-diynes and 3,4-pyridynes has been realized for the first time, producing isoquinolines in good yields by using a nickel(0) catalyst.

2011
Karilys Gonzalez Nieves

The title compound, C(15)H(16)BrNO, obtained from a two-step reaction, was prepared for use in transition metal chemistry as a phenolic ligand with bulky substituents. Inter-molecular N-H⋯O and O-H⋯N hydrogen bonds are present in the crystal structure.

Journal: :Chemical communications 2007
Wayne A Chomitz John Arnold

By adjusting to the steric and electronic requirements of differing metal centers, the new multidentate monoanionic ligand [N(2)P(2)] has demonstrated a unique ability to stabilize a range of transition metal-dinitrogen complexes in a variety of oxidation states and coordination geometries.

Journal: :Physical review letters 2004
Marc Smits C A de Lange Albert Stolow D M Rayner

We report on nonresonant strong field ionization of the multielectron transition metal atoms V, Nb, Ta, Ni, and Pd. Operating in the adiabatic regime (lambda = 1.5 microm), we quantitatively determined both (i) the first charge state saturation intensities and (ii) the absolute ionization rates for intensities ranging from threshold up to 3 x 10(14) W/cm2. We observed a dramatic suppression of ...

2012
Volker Dieckmann Sebastian Eicke Kristin Springfeld Mirco Imlau

We have successfully proposed the application of transition metal compounds in holographic recording media. Such compounds feature an ultra-fast light-induced linkage isomerization of the transition-metal-ligand bond with switching times in the sub-picosecond regime and lifetimes from microseconds up to hours at room temperature. This article highlights the photofunctionality of two of the most...

2016
Babak Anasori Chenyang Shi Eun Ju Moon Yu Xie Cooper A. Voigt Paul R. C. Kent Steven J. May Simon J. L. Billinge Michel W. Barsoum Yury Gogotsi

Journal: :Dalton transactions 2006
Cameron Jones Simon Aldridge Timo Gans-Eichler Andreas Stasch

The first examples of complexes between a 4-membered amidinato-Group 13 metal(III) heterocycle and a transition metal fragment are formed in salt elimination reactions between Na[CpFe(CO)2] and [MX2(amid)], M=Al, Ga or In; X=Cl or Br; amid-=[(RN)2CBut]-; R=Pri or cyclohexyl (Cy). The formed complexes, [CpFe(CO)2M(X)(amid)] (4 examples) have been crystallographically characterised and subject to...

Journal: :Chemical Society reviews 2014
Manuel Sparta Frank Neese

The scope of this review is to provide a brief overview of the chemical applications carried out by local pair natural orbital coupled-electron pair and coupled-cluster methods. Benchmark tests reveal that these methods reproduce, with excellent accuracy, their canonical counterparts. At the same time, the speed up achieved by exploiting the locality of the electron correlation permits us to ta...

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