Repository logo
 

Uncovering the Hidden Landscape of Tris(4-pyridyl) Ligands: Topological Complexity Derived from the Bridgehead.

Accepted version
Peer-reviewed

Change log

Authors

Waters, Jessica E 
Berger, Georg 
Peel, Andrew J 
García-Rodríguez, Raúl 
Bond, Andrew D 

Abstract

Supramolecular main group chemistry is a developing field which parallels the conventional domain of metallo-organic chemistry. Little explored building blocks in this area are main group metal-based ligands which have the appropriate donor symmetry to build desired molecular or extended arrangements. Tris(pyridyl) main group ligands (E(py)3 , E=main group metal) are potentially highly versatile building blocks since shifting the N-donor arms from the 2- to the 3-positions and 4-positions provides a very simple way of changing the ligand character from mononuclear/chelating to multidentate/metal-bridging. Here, the coordination behaviour of the first main group metal tris(4-pyridyl) ligands, E(4-py)3 (E=Sb, Bi, Ph-Sn) is explored, as well as their ability to build metal-organic frameworks (MOFs). The complicated topology of these MOFs shows a marked influence on the counter anion and on the ability of the E(4-py)3 ligands to switch coordination mode, depending on the steric and donor character of the bridgehead. This structure-directing influence of the bridgehead provides a potential building strategy for future molecular and MOF design in this area.

Description

Keywords

coordination networks, main-group synthesis, pnictogens, topology, tripodal ligands

Journal Title

Chemistry

Conference Name

Journal ISSN

0947-6539
1521-3765

Volume Title

27

Publisher

Wiley

Rights

All rights reserved
Sponsorship
The Walters-Kundert Studentship of Selwyn College, Cambridge EU ERASMUS program Leverhulme Trust Ramon y Cajal (R. G.-R., RYC-2015-19035) MCIU (RG-R, PGC2018-096880-A-I00, MCIU/AEI/ FEDER, UE).