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Barczyński P, Komasa A, Katrusiak A, Dega-Szafran Z, Nowaczyk Ł, Ratajczak-Sitarz M, Szafran M. Spectroscopic and structural investigation of 2,5-dicarboxy-1-methylpyridinium inner salt. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 121:586-595. [PMID: 24291436 DOI: 10.1016/j.saa.2013.10.123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 10/24/2013] [Accepted: 10/31/2013] [Indexed: 06/02/2023]
Abstract
The structure of 2,5-dicarboxy-1-methylpyridinium inner salt (1), has been studied by X-ray diffraction, B3LYP/6-311G(d,p) calculations, FTIR, Raman and NMR spectroscopy. The molecules are linked by short intermolecular and asymmetric O-H⋯O hydrogen bonds of 2.486(2)Å between carboxyl and carboxylate groups of neighboring molecules into infinite chains. The hydrogen bonds in the molecules optimized by the B3LYP/6-311G(d,p) approach in trimer (2) and dimer (3) are slightly longer than in the crystal. The FTIR spectrum of the investigated inner salt is dominated by a broad and intense absorption in the 1500-800 cm(-1) region attributed to the ν(as)(OHO) and γ(OHO) vibrations of the strong hydrogen bond. In the Raman spectrum the broad absorption is absent. Linear correlations, δ(exp)=a+b σ(calc) between the experimental (1)H and (13)C NMR chemical shifts (δ(exp)) of the investigated inner salt in D2O and the calculated magnetic isotropic shielding constants (σ(calc)) for the optimized monomer (4a) solvated in water are reported. The pKa value for 1 of 2.31±0.02 was determined by the potentiometric titration.
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Affiliation(s)
- P Barczyński
- Faculty of Chemistry, A. Mickiewicz University, 61-614 Poznań, Poland.
| | - A Komasa
- Faculty of Chemistry, A. Mickiewicz University, 61-614 Poznań, Poland
| | - A Katrusiak
- Faculty of Chemistry, A. Mickiewicz University, 61-614 Poznań, Poland
| | - Z Dega-Szafran
- Faculty of Chemistry, A. Mickiewicz University, 61-614 Poznań, Poland
| | - Ł Nowaczyk
- Faculty of Chemistry, A. Mickiewicz University, 61-614 Poznań, Poland
| | | | - M Szafran
- Faculty of Chemistry, A. Mickiewicz University, 61-614 Poznań, Poland
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Nockemann P, Thijs B, Parac-Vogt TN, Van Hecke K, Van Meervelt L, Tinant B, Hartenbach I, Schleid T, Ngan VT, Nguyen MT, Binnemans K. Carboxyl-Functionalized Task-Specific Ionic Liquids for Solubilizing Metal Oxides. Inorg Chem 2008; 47:9987-99. [DOI: 10.1021/ic801213z] [Citation(s) in RCA: 204] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter Nockemann
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Ben Thijs
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Tatjana N. Parac-Vogt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Kristof Van Hecke
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Luc Van Meervelt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Bernard Tinant
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Ingo Hartenbach
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Thomas Schleid
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Vu Thi Ngan
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Minh Tho Nguyen
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Koen Binnemans
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, bus 2404, B-3001 Leuven, Belgium, Unité CSTR, Université Catholique de Louvain, 1 Place Louis Pasteur, 1348 Louvain-la-Neuve, Belgium, and Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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