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Matt D, Harrowfield J. Phosphines and other P(III)‐derivatives with Cavity‐shaped Subunits: Valuable Ligands for Supramolecular Metal Catalysis, Metal Confinement and Subtle Steric Control. ChemCatChem 2021. [DOI: 10.1002/cctc.202001242] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dominique Matt
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse UMR 7177 CNRS Université de Strasbourg 4, rue Blaise Pascal 67008 Strasbourg Cedex France
| | - Jack Harrowfield
- ISIS UMR 7606 CNRS Université de Strasbourg 8, allée Gaspard Monge 67083 Strasbourg Cedex France
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Harrowfield JM, Koutsantonis GA, Ogden MI, Sobolev AN, White AH. Deprotonation of Large Calixarenes – Cation Binding and Conformations. Aust J Chem 2016. [DOI: 10.1071/ch15761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Single crystal X-ray studies of p-t-butylcalix[10]arene·2dmso·7H2O (1) and [NMe4][p-t-butylcalix[9]arene-H]·2dmso·H2O (2), provide new data on these large macrocycles and their conformations, that of 2 being the first where an encapsulated [NMe4]+ cation is present, while 1 contains the neutral ligand. Both were obtained as crystalline products of the reactions of the calixarenes with tetramethylammonium hydroxide after prolonged standing. The structure of [NEt4][calix[4]arene-H], in which the cation approaches inclusion in the shallow cone of the anion, is also defined and compared with various other alkylammonium derivatives of calixarenes as well as that of p-t-butylcalix[9]arene.
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