sup 113 Cd shielding tensors of cadmium compounds. 6. Single-crystal NMR study of the CdCl sub 2 times 18-crown-6 complex
Journal Article
·
· Inorganic Chemistry; (USA)
- Univ. of South Carolina, Columbia (USA)
- Univ. of Aarhus (Denmark)
The {sup 113}Cd chemical shielding tensor and its orientation in the molecular frame have been determined for CdCl{sub 2} {times} 18-crown-6 via a solid-state single-crystal NMR experiment. The shielding tensor elements are found to be {sigma}{sub 33} = {minus}700 ppM, {sigma}{sub 2}2 = 385 ppM, and {sigma}{sub 11} = 414 ppM. The anisotropy and asymmetry parameters are determined to be {Delta}{sigma} = {minus} 1,100 ppM and {eta} = 0.04, respectively. The unique shielding tensor element, {sigma}{sub 22}, lies 2.4{degree} from the 3-fold rotation axis of the crown ligand and was also found to be the most shielded tensor element {sigma}{sub 33}. The structural feature that determines the orientation of {sigma}{sub 33} is found to be the anomalously long Cd-O bond lengths, i.e. 2.75 {angstrom}. The unusually large magnitude of the most shielded tensor element is analyzed in terms of the special geometry and corresponding shielding trend established for a series of cadmium complexes with similar porphyrin and crown ligands. 15 refs., 2 figs., 3 tabs.
- OSTI ID:
- 6944978
- Journal Information:
- Inorganic Chemistry; (USA), Journal Name: Inorganic Chemistry; (USA) Vol. 29:3; ISSN 0020-1669; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Tue Mar 04 23:00:00 EST 1986
· J. Am. Chem. Soc.; (United States)
·
OSTI ID:5681524
sup 113 Cd shielding tensors of cadmium compounds. 5. Single-crystal studies of the dimer of diaquobis(2-hydroxybenzoato)cadmium(II) and tetrakis(4-picoline)(nitrato-O,O prime )(nitrato-O)cadmium(II)
Journal Article
·
Tue Feb 06 23:00:00 EST 1990
· Inorganic Chemistry; (USA)
·
OSTI ID:7121458
sup 113 Cd shielding tensors of the cadmium complex of texaphyrin, a novel expanded porphyrin, and its pyridine and benzimidazole adducts
Journal Article
·
Tue Mar 06 23:00:00 EST 1990
· Inorganic Chemistry; (USA)
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OSTI ID:6902254
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALCOHOLS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CADMIUM 113
CADMIUM COMPLEXES
CADMIUM ISOTOPES
CHEMICAL SHIFT
COMPLEXES
CRYSTALS
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
MAGNETIC RESONANCE
MONOCRYSTALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENE GLYCOLS
POLYMERS
RADIOISOTOPES
RESONANCE
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALCOHOLS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CADMIUM 113
CADMIUM COMPLEXES
CADMIUM ISOTOPES
CHEMICAL SHIFT
COMPLEXES
CRYSTALS
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GLYCOLS
HYDROXY COMPOUNDS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
MAGNETIC RESONANCE
MONOCRYSTALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENE GLYCOLS
POLYMERS
RADIOISOTOPES
RESONANCE
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES