نتایج جستجو برای: coordination

تعداد نتایج: 78244  

Journal: :Synthese 2009
Rodrigo Moro

In a seminal work, Tversky and Kahneman showed that in some contexts people tend to believe that a conjunction of events (e.g., Linda is a bank teller and is active in the feminist movement) is more likely to occur than one of the conjuncts (e.g., Linda is a bank teller). This belief violates the conjunction rule in probability theory. Tversky and Kahneman called this phenomenon the "conjunctio...

Journal: :Dalton transactions 2012
Stephen M Mansell Michael Green Christopher A Russell

Trimethylsilylphosphaalkyne binds readily to a variety of transition metals. Binding can take place using either the end-on or side-on mode and to either mononuclear or multinuclear metal complexes. The synthesis, structure and characterisation of eight such complexes, [Cp(2)Zr(PMe(3))(Me(3)SiC≡P)], [(C(6)F(5))(2)FB(C(6)F(4))PCSiMe(3))ZrCp(2)(PMe(3))], [(C(6)F(5))(2)XB(C(6)F(4))(ZrCp(2))(2)P(2)...

2016
Kazumasa Hosoya Shin-ichi Nishikiori Masashi Takahashi Takafumi Kitazawa

A newly prepared metal complex Fe(4,4’-bipyridine)Ni(CN)4 ̈ nH2O, which was estimated to have a structure similar to the Hofmann-type clathrate host, changed its color from orange to deep orange and yellow on exposure to ethanol and acetone vapor, respectively, and the respective samples showed thermally induced two-step and one-step spin transitions.

2009
Hisako Sato Akihiko Yamagishi

The Delta- and Lambda-isomerism of octahedral metal complexes is employed as a source of chirality for inducing chiral nematic phases. By applying a wide range of chiral metal complexes as a dopant, it has been found that tris(beta-diketonato)metal(III) complexes exhibit an extremely high value of helical twisting power. The mechanism of induction of the chiral nematic phase is postulated on th...

Journal: :ChemSusChem 2012
Reiko Jennerjahn Ralf Jackstell Irene Piras Robert Franke Haijun Jiao Matthias Bauer Matthias Beller

The use of noble metal catalysts in homogeneous catalysis has been well established. Due to their price and limited availability, there is growing interest in the substitution of such precious metal complexes with readily available and bio-relevant catalysts. In particular, iron is a "rising star" in catalysis. Herein, we present a general and selective iron-catalyzed monoisomerization of olefi...

Journal: :Physical & occupational therapy in pediatrics 2010
Susan Hillier Auburn McIntyre Leanne Plummer

Aquatic therapy is an intervention for children with Developmental Coordination Disorder (DCD) that has not been investigated formally. This was a pilot randomized controlled trial to investigate the feasibility and preliminary effectiveness of an aquatic therapy program to improve motor skills of children with DCD. Thirteen children (mean age 7 years 1 month; 10 males) with DCD were randomly a...

Journal: :Accounts of chemical research 2003
James K McCusker

Our research is concerned with the application of femtosecond time-resolved absorption techniques to the study of the photophysics of transition metal complexes. The focus is to understand the events that characterize the process of excited-state evolution from the time a photon is absorbed by a molecule to the formation of the lowest-energy excited state of the system. This Account describes o...

Journal: :Chemical Society reviews 2013
Michał Rachwalski Niek Vermue Floris P J T Rutjes

Deracemisation of racemic compounds is still the most important strategy to produce optically pure compounds despite many recent advances in asymmetric synthesis. Especially deracemisation approaches that give rise to single enantiomers are preferred, which can be achieved either by invoking organocatalysts, metal complexes or enzymes - leading to dynamic kinetic resolution - or by applying oth...

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