Metallocene - Wikipedia
网页A metallocene is a compound typically consisting of two cyclopentadienyl anions (C. 5H−. 5, abbreviated Cp) bound to a metal center (M) in the oxidation state II, with the resulting general formula (C5H5)2M. Closely related to the metallocenes are the metallocene derivatives, e.g. titanocene dichloride or vanadocene dichloride.
31.1: Metallocenes - Chemistry LibreTexts
网页A metallocene is a compound typically consisting of two cyclopentadienyl anions bound to a metal center (M) in the oxidation state II. Certain metallocenes and their derivatives exhibit catalytic ….
茂金属 - 维基百科，自由的百科全书
网页茂金属 （英语：metallocene [1]）是一类 有机金属化合物，典型的是由两个 环戊二烯 阴离子 （茂基，简写为Cp，即C 5 H 5-）和二 价 氧化态 金属 中心连接而成，通式为 (C 5 H 5) 2 M。. 与茂金属密切相关的为茂金属 衍生物，如 二氯二茂钛 、 二氯二茂钒 等。. 某些茂 ...
Metallocene Anions: From Electrochemical Curiosities to Isolable ...
网页2022年1月27日 · Here we present an overview of metallocene anions and their derivatives, [M (Cp R) 2] −, where metal centres formally exhibit +I oxidation states. We focus on d-block examples, from their origins as unstable intermediates in low temperature electrochemical studies to more recent examples of isolated complexes.
10.1: Historical Background and Introduction into Metallocenes
网页2022年6月15日 · Let us take a historical approach to organometallic chemistry and see how the field has evolved. The arguably first organometallic compound was kakodyl oxide, an organo-arsenic compound. It was accidentally produced by the French chemist Louis Cadet in 1760 when he was working on inks.
24.13A: Ferrocene and other Metallocenes - Chemistry LibreTexts
网页Bent metallocenes. Bent metallocenes are Cp 2 MX n type complexes formed of group 4 and the heavier elements of groups 5−7. In these complexes the frontier doubly degenerate e 2 g orbitals of Cp 2 M fragment interacts with the …
Synthesis and characterization of a formal 21-electron ... - Nature
网页2023年9月5日 · Metallocenes are highly versatile organometallic compounds. The versatility of the metallocenes stems from their ability to stabilize a wide range of formal electron counts. To date, d -block...
Metallocene - an overview | ScienceDirect Topics
网页Metallocene catalyst polyolefins are widely regarded as a new generation of resins entering the marketplace. A number of metallocene resins, ranging in density from 0.905-0.945 g/cc and in melt index, MI, from 0.7-3 MI, were …
Isolation and electronic structures of derivatized manganocene ...
网页2020年12月14日 · Here we report the isolation of a derivatized ferrocene anion in the solid state as part of an isostructural family of 3 d metallocenates, which consist of anionic complexes of a metal centre ...
Metallocenes | Wiley Online Books
网页1998年8月27日 · If you are more interested in applications, there is a wealth of polymeric and dendritic materials with metallocene building blocks described herein. This book also focusses on metallocenes as catalysts in polymerization or asymmetric reactions.