Reaction of Ph2C(X)(CO2H) (X = OH, NH2) with [VO(OR)3] (R = Et, nPr): structure, magnetic susceptibility and ROP capability

Mollie A. Glenister; Josef W. A. Frese; Mark R. J. Elsegood; Angelos B. Canaj; Euan K. Brechin; Carl Redshaw

doi:10.1039/D4DT00078A

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Reaction of Ph₂C(X)(CO₂H) (X = OH, NH₂) with [VO(OR)₃] (R = Et, nPr): structure, magnetic susceptibility and ROP capability†

Mollie A. Glenister,^a Josef W. A. Frese,^a Mark R. J. Elsegood,

^a Angelos B. Canaj,

^b Euan K. Brechin

^b and Carl Redshaw

*^c

Author affiliations

* Corresponding authors

^a Plastics Collaboratory, Chemistry, School of Natural Sciences, University of Hull, Cottingham Road, Hull, UK
E-mail: c.redshaw@hull.ac.uk

^b EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, UK

^c Chemistry Department, Loughborough University, Loughborough, Leicestershire, UK

Abstract

Reaction of [VO(OR)₃] (R = Et, nPr) with 2,2′-diphenylglycine afforded the alkoxide-bridged dimers {[VO(OR)(μ-OR)][Ph₂C(NH₂)(CO₂)]}₂, whereas use of benzilic acid, in the presence of alkali metals, afforded 16-membered metallocycles {V₈(O)₄M(OR)₈[Ph₂C(OH)(CO₂)]₁₂} (M = <1 Na, K). For the ring systems, magnetic susceptibility data is consistent with mixed-valence vanadium with an average oxidation state of 3.5. The dimer and ring systems are capable of the ring opening polymerisation (ROP) of ε-caprolactone under N₂, air, or as melts affording mostly low to medium molecular weight cyclic and linear products.

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DOI: https://doi.org/10.1039/D4DT00078A
Article type: Communication
Submitted: 10 Jan 2024
Accepted: 26 Feb 2024
First published: 27 Feb 2024
This article is Open Access

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Dalton Trans., 2024,53, 5351-5355

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Reaction of Ph₂C(X)(CO₂H) (X = OH, NH₂) with [VO(OR)₃] (R = Et, nPr): structure, magnetic susceptibility and ROP capability

M. A. Glenister, J. W. A. Frese, M. R. J. Elsegood, A. B. Canaj, E. K. Brechin and C. Redshaw, Dalton Trans., 2024, 53, 5351 DOI: 10.1039/D4DT00078A

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