Studies on Silicon-transition Metal Systems PDF Download
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Author: H. M. Colquhoun
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: H. M. Colquhoun
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: John Stewart Allinson
Publisher:
ISBN:
Category :
Languages : en
Pages : 472
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Author: Kuzhikalail Mathew Abraham
Publisher:
ISBN:
Category : Silicon
Languages : en
Pages : 170
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Book Description
Author: Peter Jutzi
Publisher: John Wiley & Sons
ISBN: 3527611215
Category : Science
Languages : en
Pages : 506
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Book Description
The combined results from an international research project involving 40 interdisciplinary groups, providing the latest knowledge from the past few years. Adopting an application-oriented approach, this handy reference is a must-have for every silicon chemist, whether working in inorganic, organic, physical or polymer chemistry, materials science or physics.
Author: Mark Jonathan Hampden Smith
Publisher:
ISBN:
Category :
Languages : en
Pages : 590
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Author: Herbert W Roesky
Publisher: Academic Press
ISBN: 0128035684
Category : Science
Languages : en
Pages : 540
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Book Description
Efficient Methods for Preparing Silicon Compounds is a unique and valuable handbook for chemists and students involved in advanced studies of preparative chemistry in academia and industry. Organized by the various coordination numbers (from two to six) of the central silicon atom of the reported compounds, this book provides researchers with a handy and immediate reference for any compound or properties needed in the area. Edited by a renowned expert in the field, each chapter explores a different type of compound, thoroughly illustrated with useful schemes and supplemented by additional references. Knowledgeable contributors report on a broad range of compounds on which they have published and which are already used on a broad scale or have the potential to be used in the very near future to develop a new field of research or application in silicon chemistry. - Includes contributions and edits from leading experts in the field - Includes detailed chemical schemes and useful references for each preparative method - Organized by the coordination numbers of the central silicon atom for each compound for easy navigation - Serves as a go-to primer for researchers in novel compositions of silicon matter
Author: Roy Anthony Smith
Publisher:
ISBN:
Category : Silicon alloys
Languages : en
Pages : 0
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Book Description
A systematic structural study of the transition metal to silicon bond requires extensive investigation of systems of the type LM-SiXX'X" where L is a group of ligands, M is a transition metal and X,X' and X'' are the silicon substituents. The structures described in this thesis were chosen to contribute to a comprehensive study of the effects of varying L,M,X,X' and X". The crystal structure of (h-C^H^)Re(CO)^HSi(C^H^)^ was undertaken to investigate the effect of changing the transition metal while maintaining all other factors constant. The compound crystallises in the monoclinic system with spacegroup P2^/n,unit cell dimensions a=13» ft ,b=17.502(17) ft ,c=9.579(4) ft , p=92.12(8)° and four molecules per unit cell. The rhenium compound is isomorphous with the manganese analogue,but certain differences in molecular structure are apparent. The rhenium-sil icon bond is considerably shorter than the manganese-silicon bond when the different sizes of the metal atoms is taken into account. The compound (h^C^H^)Fe(CO)H(SiF 2 CH 3 ) 2 crystallises in the orthorhombic spacegroup Pnam (# 62) with unit cell dimensions a=ll.821(2) ft,b=7.157(2) ft,c=14.640(2) ft and four molecules in the unit cell. The molecular structure is compared with the structures of (h) Fe(CO)H(SiCl 3 ) 0 and (h-C 5 H 5 )Fe(CO)H(Si(CH 3 ) 2 - ^6^5^2 ' 8 eometr y °f the C^H^Fe structural fragment is constant for all three molecules while the iron-silicon bond lengths vary in a manner that reflects the differences in electronegativity of the silicon substituents. The general trends in cis contacts between hydride ligands and silyl ligands appear consistent with repulsion rather than weak bond formation. Two compounds which were believed to have empirical formula Fe(CO)^(Si(CH^) 2 were studied. The first,which had been proposed as the dimeric species crystallises in the triclinic spacegroup PI with unit cell dimensions a=ll.535(12) ,b=12.288(12) X , c=12.543(12) % ,*=72.01(6)° ,p=87.31(8)° ,*=88.08(8)° and two molecules in the unit cell. The true formulation of the compound was found to be (CO)"Fe(COSi(CH_)").Fe(CO) . Thus the molecule 3 3 3 4 3 contains no iron-silicon bonds. The second compound was shown to be the authentic cis isomer of Fe(CO).(Si(CH")")_ which crystallises - 4 3 3 2 in the orthorhombic spacegroup Pnam (# 62) with unit cell dimensions a=13.360(14) % ,b=6.640(12) 1 ,c=17.590(8) X and four molecules per unit cell. The precision' of the structure is limited by the disorder of approximately 6% of the molecules in the crystal.
Author: Leopold Scheffler
Publisher: Cuvillier Verlag
ISBN: 373694988X
Category : Science
Languages : en
Pages : 124
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Book Description
Silizium ist ein wichtiger Rohstoff unserer modernen Welt. Mikroelektronik, Sensorik und Photovoltaik sind drei wichtige Anwendungsgebiete, die aus unserem täglichen Leben heute nicht mehr wegzudenken sind. Entscheidend für all diese Anwendungen ist das Verständnis der elektrischen Eigenschaften des Materials, welche durch Defekte und Verunreinigungen beeinflusst werden. Die Übergangsmetalle sind eine wichtige Klasse von Verunreinigungen im Silizium, da sie die elektrischen Eigenschaften stark beeinflussen. Auch ist bekannt, dass Wasserstoff, welcher in vielen Prozessen in Silizium eindringen kann, mit vielen Defekten reagiert. In der vorliegenden Dissertation wird die Wechselwirkung von Wasserstoff mit den Metallen Titan, Kobalt und Nickel mit Hilfe der kapazitiven Messmethoden DLTS und MCTS untersucht. Verschiedene elektrisch aktive Metall-Wasserstoff-Komplexe können nachgewiesen werden. Auch eine Passivierung der Metalle durch Wasserstoff wird beobachtet. Neben den Reaktionen mit den Metallen wird auch eine Wechselwirkung des Wasserstoffs mit im Silizium vorhandenem Kohlenstoff untersucht. Für eine Einordnung der Ergebnisse werden diese mit dem aus der Literatur bekannten Verhalten benachbarter Elemente verglichen.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 780
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Book Description
Author: Ewa Broclawik
Publisher: Springer
ISBN: 3030117146
Category : Science
Languages : en
Pages : 540
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Book Description
This book focuses on the electronic properties of transition metals in coordination environments. These properties are responsible for the unique and intricate activity of transition metal sites in bio- and inorganic catalysis, but also pose challenges for both theoretical and experimental studies. Written by an international group of recognized experts, the book reviews recent advances in computational modeling and discusses their interplay using experiments. It covers a broad range of topics, including advanced computational methods for transition metal systems; spectroscopic, electrochemical and catalytic properties of transition metals in coordination environments; metalloenzymes and biomimetic compounds; and spin-related phenomena. As such, the book offers an invaluable resource for all researchers and postgraduate students interested in both fundamental and application-oriented research in the field of transition metal systems.
