Abstract
The quadrupole splitting constants (QSC), defined as (1 + ή2/3)1/2(e2Qqzz/h, for7Li in lithium arylamides, phenolates, and enolates and for several organolithium compounds in ether and tertiary amine solvents are determined from7Li and13C spin-lattice relaxation data. The effect of anisotropic rotational diffusion on the apparent values of QSC is considered. Values of QSC range from 40 to 350 kHz. Empirical correlations between QSC and the degree of aggregation and solvation of lithium are presented. Large differences between QSC for tri- and tetracoordinated lithium are noted. A crude model based on a point charge approximation for calculating the principal field gradients reproduces the qualitative features of the empirical correlations. The degrees of solvation of aggregated lithium salts are discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5355-5361 |
| Number of pages | 7 |
| Journal | Journal of the American Chemical Society |
| Volume | 109 |
| Issue number | 18 |
| DOIs | |
| State | Published - Sep 1 1987 |
Fingerprint
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
- Biochemistry
- Colloid and Surface Chemistry
Cite this
Lithium Quadrupole Coupling Constants and the Structures of Organic Lithium Compounds in Solution. / Jackman, L. M.; Scarmoutzos, L. M.; Debrosse, C. W.
In: Journal of the American Chemical Society, Vol. 109, No. 18, 01.09.1987, p. 5355-5361.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Lithium Quadrupole Coupling Constants and the Structures of Organic Lithium Compounds in Solution
AU - Jackman, L. M.
AU - Scarmoutzos, L. M.
AU - Debrosse, C. W.
PY - 1987/9/1
Y1 - 1987/9/1
N2 - The quadrupole splitting constants (QSC), defined as (1 + ή2/3)1/2(e2Qqzz/h, for7Li in lithium arylamides, phenolates, and enolates and for several organolithium compounds in ether and tertiary amine solvents are determined from7Li and13C spin-lattice relaxation data. The effect of anisotropic rotational diffusion on the apparent values of QSC is considered. Values of QSC range from 40 to 350 kHz. Empirical correlations between QSC and the degree of aggregation and solvation of lithium are presented. Large differences between QSC for tri- and tetracoordinated lithium are noted. A crude model based on a point charge approximation for calculating the principal field gradients reproduces the qualitative features of the empirical correlations. The degrees of solvation of aggregated lithium salts are discussed.
AB - The quadrupole splitting constants (QSC), defined as (1 + ή2/3)1/2(e2Qqzz/h, for7Li in lithium arylamides, phenolates, and enolates and for several organolithium compounds in ether and tertiary amine solvents are determined from7Li and13C spin-lattice relaxation data. The effect of anisotropic rotational diffusion on the apparent values of QSC is considered. Values of QSC range from 40 to 350 kHz. Empirical correlations between QSC and the degree of aggregation and solvation of lithium are presented. Large differences between QSC for tri- and tetracoordinated lithium are noted. A crude model based on a point charge approximation for calculating the principal field gradients reproduces the qualitative features of the empirical correlations. The degrees of solvation of aggregated lithium salts are discussed.
UR - http://www.scopus.com/inward/record.url?scp=33845283192&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33845283192&partnerID=8YFLogxK
U2 - 10.1021/ja00252a009
DO - 10.1021/ja00252a009
M3 - Article
AN - SCOPUS:33845283192
VL - 109
SP - 5355
EP - 5361
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 18
ER -