Cadmium-113 shielding tensors of cadmium compounds. 3. Single-crystal studies of cadmium glycinate monohydrate and dinitratobis(1,1,3,3-tetramethyl-2-thiourea)cadmium
| Autor: | Paul D. Ellis, Robert S. Honkonen, Paul S. Marchetti |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
chemistry.chemical_classification
Cadmium Analytical chemistry chemistry.chemical_element General Chemistry Nuclear magnetic resonance spectroscopy Biochemistry Catalysis Bond length chemistry.chemical_compound Colloid and Surface Chemistry Molecular geometry Thiourea chemistry Isotopes of cadmium Inorganic compound Single crystal Nuclear chemistry |
| Zdroj: | Journal of the American Chemical Society. 108:912-915 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/ja00265a011 |
| Popis: | Cadmium glycinate monohydrate and cadmium dinitrato bis(1,1,3,3-tetramethyl-2-thiourea) have been investigated by single-crystal oriented /sup 113/Cd NMR. The cadmium shielding tensor elements for the two sulfur-four oxygen system in Cd(C/sub 5/H/sub 12/N/sub 2/S)/sub 2/(NO/sub 3/)/sub 2/ are -340, +308, and +327 ppm for sigma/sub 11/, sigma/sub 22/, and sigma/sub 33/, respectively. The 438 ppm anisotropy and the extreme magnitude of sigma/sub 11/ are discussed in terms of cadmium-sulfur and cadmium-nitrate interactions. The orientation of the shielding tensor is in agreement with previous results for oxo-cadmium crystals. The /sup 113/Cd shielding tensor elements for Cd(NH/sub 2/CH/sub 2/CO/sub 2/)''H/sub 2/O were determined to be -116, +200, and +256 ppm relative to solid Cd(ClO/sub 4/)/sub 2/. The orientation of the tensor in this two nitrogen-four oxygen system was found to be dominated by the glycinate chelate moieties. 25 references, 3 figures, 4 tables. |
| Databáze: | OpenAIRE |
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