RESEARCH ARTICLE · Organometallics · 2012

Bipyridine Adducts of Molybdenum Imido Alkylidene and Imido Alkylidyne Complexes

Alejandro G. Lichtscheidl, Victor W. L. Ng, Péter Müller, Michael K. Takase, Richard R. Schrock, Steven J. Malcolmson, Simon J. Meek, Bo Li, Elizabeth T. Kiesewetter, Amir H. Hoveyda

Read original paper ↗

See where this research leads.

A citation map has not been saved for this paper yet.

Open in your workspace →Open your workspace to prepare the citation network.

The paper record is available below. Preparing a network uses the existing account and source-allowance controls.

Papers that cite this work

No saved citation network is available; this does not mean the paper has no citations.

The evidence behind the map

Publication record

Research article.

Abstract

Seven bipyridine adducts of molybdenum imido alkylidene bispyrrolide complexes of the type Mo(NR)(CHCMe(2)R')(Pyr)(2)(bipy) (1a-1g; R = 2,6-i-Pr(2)C(6)H(3) (Ar), adamantyl (Ad), 2,6-Me(2)C(6)H(3) (Ar'), 2-i-PrC(6)H(4) (Ar(iPr)), 2-ClC(6)H(4) (Ar(Cl)), 2-t-BuC(6)H(4) (Ar(t) (Bu)), and 2-MesitylC(6)H(4) (Ar(M)), respectively; R' = Me, Ph) have been prepared using three different methods. Up to three isomers of the adducts are observed that are proposed to be the trans and two possible cis pyrrolide isomers of syn alkylidenes. Sonication of a mixture containing 1a-1g, HMTOH (2,6-dimesitylphenol), and ZnCl(2)(dioxane) led to the formation of MAP species of the type Mo(NR)(CHCMe(2)R')(Pyr)(OHMT) (3a-3g). DCMNBD (2,3-dicarbomethoxynorbornadiene) is polymerized employing 3a-3g as initiators to yield >98% cis,syndiotactic poly(DCMNBD). Attempts to prepare bipy adducts of bisdimethylpyrrolide complexes led to formation of imido alkylidyne complexes of the type Mo(NR)(CCMe(2)R')(Me(2)Pyr)(bipy) (Me(2)Pyr = 2,5-dimethylpyrrolide; 4a - 4g) through a ligand-induced migration of an alkylidene α proton to a dimethylpyrrolide ligand. X-ray structures of Mo(NAr)(CHCMe(2)Ph)(Pyr)(2)(bipy) (1a), Mo(NAr(iPr))(CHCMe(2)Ph)(Pyr)(OHMT) (3d), Mo(NAr)(CCMe(2)Ph)(Me(2)Pyr)(bipy) (4a), and Mo(NAr(T))(CCMe(3))(Me(2)Pyr)(bipy) (Ar(T) = 2-(2,4,6-i-Pr(3)C(6)H(2))C(6)H(4); 4g) showed structures with the normal bond lengths and angles.

Coverage and freshness

Citation coverage has not been established for this paper.

Counts describe saved source records; repository versions may appear separately. A completed source query is not a complete or live citation census. A citation does not prove endorsement or research quality. Counts depend on publication age and index coverage. Colors identify research areas; positions are for readability.

Source: Saved OpenAlex scholarly metadata. Visits to this public page do not acquire new provider data.

Report a correction