Issue 8, 2020

Tricyclic tin(iv) cages: synthetic aspects and intriguing features of stannatranes and pseudostannatranes

Abstract

Tin(IV) tricycles form a class of structurally unique and topologically attractive molecules with challenging synthetic attributes. Particularly, “stannatranes and pseudostannatranes” are among the most intensively studied representatives of tin(IV) tricycles. In light of recent research perspectives, this review discusses the progress of stannatranes and pseudostannatranes over the past decades. Herein, stannatranes and pseudostannatranes are arranged into various groups based on their cage skeletons. The synthetic aspects of stannatranes are summarized for different categories of ligating systems, viz. stannatranes with nitrilotriethanolate cages, aminotricarboxylate cages, and substituted nitrilotriethanolate cages. Likewise, detailed synthetic discussions of pseudostannatranes are presented in subsequent sections, comprising [3.3.3.01,5], [4.3.3.01,5], [4.4.3.01,5] and [4.4.4.01,6] cages. Further, intriguing features of stannatranes and pseudostannatranes, such as variation in the Sn–N transannular bond, oligomerization, extended exocyclic bonds, aqueous chemistry and unique spectroscopic aspects, are explained with appropriate examples. Stannatranes possess interesting structural topologies and physical features which can be tuned by controlling the rigidity/flexibility of the ligating system. The choice of the rigid skeleton mitigates oligomerization effects and allows access to highly stable monomeric frameworks. The stability of these systems in aqueous systems facilitates the formation of new hydrolytic species and allows chemical reactivity of the exocyclic bond to obtain new stannatranes.

Graphical abstract: Tricyclic tin(iv) cages: synthetic aspects and intriguing features of stannatranes and pseudostannatranes

Article information

Article type
Perspective
Submitted
05 11月 2019
Accepted
28 1月 2020
First published
28 1月 2020

New J. Chem., 2020,44, 3168-3184

Tricyclic tin(IV) cages: synthetic aspects and intriguing features of stannatranes and pseudostannatranes

N. Srivastav, K. Kumar, R. Singh and V. Kaur, New J. Chem., 2020, 44, 3168 DOI: 10.1039/C9NJ05519C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements