Evolving a Circular Plastics Economy

Coordination chemistry of the calix[6]arene system: application in polymerisation catalysis and beyond (2025)
Journal Article
Redshaw, C. (in press). Coordination chemistry of the calix[6]arene system: application in polymerisation catalysis and beyond. Dalton Transactions : an international journal of inorganic chemistry, https://doi.org/10.1039/d5dt00473j

This perspective looks at structurally characterized examples of metal-based calix[6]arene complexes, focusing on the coordination chemistry adopted and their applications, primarily in polymerisation catalysis. In particular, we look at our attempts... Read More about Coordination chemistry of the calix[6]arene system: application in polymerisation catalysis and beyond.

Tin Complexes Derived from the Acids Ph<inf>2</inf>C(X)CO<inf>2</inf>H (X = OH, NH<inf>2</inf>): Structure and ROP Capability (2025)
Journal Article
Prior, T. J., & Redshaw, C. (2025). Tin Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2): Structure and ROP Capability. Catalysts, 15(3), Article 261. https://doi.org/10.3390/catal15030261

Interaction of [Sn(OtBu)4] with the acid 2,2′-diphenylgylcine, Ph2C(X)CO2H (X = NH2), affords the complex {Sn[Ph2C(NH2)(CO2)]4}·2MeCN (1·2MeCN) after work-up, whereas when X = OH (benzilic acid), the complex {Sn[Ph2C(O)(CO2)]2(CH3CO2H)2} (2) is isola... Read More about Tin Complexes Derived from the Acids Ph<inf>2</inf>C(X)CO<inf>2</inf>H (X = OH, NH<inf>2</inf>): Structure and ROP Capability.

Metal-organic frameworks of p-hydroxybenzoic acid: synthesis, structure and ring opening polymerization capability (2024)
Journal Article
Gong, Y., Sharp, S. J., Elsegood, M. R., & Redshaw, C. (2024). Metal-organic frameworks of p-hydroxybenzoic acid: synthesis, structure and ring opening polymerization capability. RSC advances, 14(51), 37895-37901. https://doi.org/10.1039/d4ra06361a

Two new, isostructural, metal-organic frameworks {[Co(O2CC6H4O)(DMF)]2}n and {[Mn(O2CC6H4O)(DMF)]2}n have been synthesised and structurally characterized. Use of p-hydroxybenzoic acid resulted in a three-dimensional MOF featuring a linker with a carb... Read More about Metal-organic frameworks of p-hydroxybenzoic acid: synthesis, structure and ring opening polymerization capability.

Extended Hydrogen-Bonded Molybdenum Arrays Derived from Carboxylic Acids and Dianilines: ROP Capability of the Complexes and Parent Acids and Dianilines (2024)
Journal Article
Clegg, W., Elsegood, M. R., & Redshaw, C. (2024). Extended Hydrogen-Bonded Molybdenum Arrays Derived from Carboxylic Acids and Dianilines: ROP Capability of the Complexes and Parent Acids and Dianilines. Catalysts, 14(3), Article 214. https://doi.org/10.3390/catal14030214

From reactions involving sodium molybdate and dianilines [2,2′-(NH2)C6H4]2(CH2)n (n = 0, 1, 2) and amino-functionalized carboxylic acids 1,2-(NH2)(CO2H)C6H4 or 2-H2NC6H3-1,4-(CO2H)2, in the presence of Et3N and Me3SiCl, products adopting H-bonded net... Read More about Extended Hydrogen-Bonded Molybdenum Arrays Derived from Carboxylic Acids and Dianilines: ROP Capability of the Complexes and Parent Acids and Dianilines.

Reaction of Ph2C(X)(CO2H) (X = OH, NH2) with [VO(OR)3] (R = Et, nPr): Structure, magnetic susceptibility and ROP capability (2024)
Journal Article
Glenister, M. A., Frese, J. W., Elsegood, M. R., Canaj, A. B., Brechin, E. K., & Redshaw, C. (2024). Reaction of Ph2C(X)(CO2H) (X = OH, NH2) with [VO(OR)3] (R = Et, nPr): Structure, magnetic susceptibility and ROP capability. Dalton Transactions : an international journal of inorganic chemistry, 53(12), 5351-5355. https://doi.org/10.1039/d4dt00078a

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[Ph2... Read More about Reaction of Ph2C(X)(CO2H) (X = OH, NH2) with [VO(OR)3] (R = Et, nPr): Structure, magnetic susceptibility and ROP capability.

A LDA-Based Social Media Data Mining Framework for Plastic Circular Economy (2024)
Journal Article
Xue, Y., Kambhampati, C., Cheng, Y., Mishra, N., Wulandhari, N., & Deutz, P. (2024). A LDA-Based Social Media Data Mining Framework for Plastic Circular Economy. International Journal of Computational Intelligence Systems, 17(1), Article 8. https://doi.org/10.1007/s44196-023-00375-7

The mass production of plastic waste has caused an urgent worldwide public health crisis. Although government policies and industrial innovation are the driving forces to meet this challenge, trying to understand public attitudes may improve the effi... Read More about A LDA-Based Social Media Data Mining Framework for Plastic Circular Economy.

Mixed-magnesium/zinc calix[4]arene complexes: structure, and ring opening polymerisation studies (2023)
Journal Article
Banks, H. J., Frese, J. W., Elsegood, M. R., & Redshaw, C. (2024). Mixed-magnesium/zinc calix[4]arene complexes: structure, and ring opening polymerisation studies. Chemical communications : Chem comm / the Royal Society of Chemistry, 60(3), 304-307. https://doi.org/10.1039/d3cc04899c

Different combinations of organomagnesium reagents and zinc bromide react with either 1,3-dimethoxy-4-tert-butylcalix[4]areneH2 (L(OMe)2H2) or trialkoxycalix[4]arenes (L(OR)3H) (R = n-Pr, n-pentyl) to afford mixed-metal calix[4]arene systems. Intrigu... Read More about Mixed-magnesium/zinc calix[4]arene complexes: structure, and ring opening polymerisation studies.

Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2) (2022)
Journal Article
Zhang, X., Prior, T. J., Chen, K., Santoro, O., & Redshaw, C. (2022). Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2). Catalysts, 12(9), Article 935. https://doi.org/10.3390/catal12090935

The reactions of the titanium alkoxide [Ti(OR)4] (R = Me, nPr, iPr, tBu) with the acids 2,2’-Ph2C(X)(CO2H), where X = OH and NH2, i.e., benzilic acid (2,2’-diphenylglycolic acid, L1H2), and 2,2’-diphenylglycine (L2H3), have been investigated. The var... Read More about Ring Opening Polymerization of Lactides and Lactones by Multimetallic Titanium Complexes Derived from the Acids Ph2C(X)CO2H (X = OH, NH2).

Trinuclear zinc calix[4]arenes: synthesis, structure, and ring opening polymerization studies (2022)
Journal Article
Xing, T., Frese, J., Derbyshire, M., Glenister, M. A., Elsegood, M. R. J., & Redshaw, C. (2022). Trinuclear zinc calix[4]arenes: synthesis, structure, and ring opening polymerization studies. Dalton Transactions : an international journal of inorganic chemistry, https://doi.org/10.1039/d2dt01496c

The trinuclear zinc calix[4]arene complexes [Zn3(O2CCH3)2(L(O)2(OMe)2)2·xMeCN (x = 7.5, 1; x = 6, 1′), [Zn3(O2CCH3)2(L(O)2(OnPr)2)2·5MeCN (2·5MeCN), [Zn3(OEt)2(L(O)2(OMe)2)2]·4MeCN (3·4MeCN), [Zn3(OEt)2(L(Opentyl)2)2]·4.5MeCN (4·4.5MeCN) and [Zn3(OH)... Read More about Trinuclear zinc calix[4]arenes: synthesis, structure, and ring opening polymerization studies.

Niobium and Tantalum complexes derived from the acids Ph<inf>2</inf>C(X)CO<inf>2</inf>H (X = OH, NH<inf>2</inf>): synthesis, structure and ROP capability (2022)
Journal Article
Zhang, X., Prior, T. J., & Redshaw, C. (2022). Niobium and Tantalum complexes derived from the acids Ph2C(X)CO2H (X = OH, NH2): synthesis, structure and ROP capability. New journal of chemistry = Nouveau journal de chimie, https://doi.org/10.1039/d2nj02527b

Reaction of benzilic acid, Ph2C(OH)(CO2H), L1H2, with equimolar amounts of M(OR)5 (M = Nb, Ta) led, following work-up, to the tetranuclear complexes [Nb4(OEt)8(L1)4(μ-O)2] (1) or [Ta4(OEt)8(L1)4(μ-O)2]·0.5MeCN (2·0.5MeCN), respectively. Similar use o... Read More about Niobium and Tantalum complexes derived from the acids Ph<inf>2</inf>C(X)CO<inf>2</inf>H (X = OH, NH<inf>2</inf>): synthesis, structure and ROP capability.