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Chem Asian J. 2022 Jan 03;17(1):e202100962. doi: 10.1002/asia.202100962. Epub 2021 Nov 25.

Cyclopentadienyl Complexes of the Alkaline Earths in Light of the Periodic Trends.

Chemistry, an Asian journal

Sudip Baguli, Sumana Mondal, Chhotan Mandal, Santu Goswami, Debabrata Mukherjee

Affiliations

  1. Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Nadia, 741246, West Bengal, India.

PMID: 34825506 DOI: 10.1002/asia.202100962

Abstract

The electron-rich cyclopentadienyl and the analogous indenyl and fluorenyl ligands (collectively denoted here as Cp') have been impactful in stabilizing electron-deficient metal centers including the highly electropositive alkaline earths. Being in the s-block, the group 2 metals follow a major periodic variation in their atomic and ionic properties which is reflected in those Cp' compounds. This article presents an overview of this class of compounds for all the five metals from beryllium to barium (radium is excluded for its radioactivity), highlighting their systematic variation.

© 2021 Wiley-VCH GmbH.

Keywords: Alkaline earths; Cyclopentadienyl; Half-sandwiches; Hapticity; Heterobimetallics; Metallocenes; ansa-Metallocenes

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