7Li PGSE diffusion measurements on LiPPh2:: A solvent dependence of the structure

被引：34

作者：

Fernández, I ^{[1
]}

Martínez-Viviente, E ^{[1
]}

Pregosin, PS ^{[1
]}

机构：

[1] ETHZ, HCI Honggerberg, Inorgan Chem Lab, CH-8093 Zurich, Switzerland

来源：

INORGANIC CHEMISTRY | 2004年 / 43卷 / 15期

关键词：

D O I：

10.1021/ic049703y

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The first application of Li-7 pulsed-gradient spin-echo (PGSE) diffusion methods to structural lithium chemistry is reported. The data, which provide quantitative diffusion constants at 155 K, lead to a new method of estimating solvent viscosity at this temperature and clearly show a solvent dependence for the structure of LiPPh2, In THF, LiPPh2 exists as a mononuclear solvated species, whereas in Et2O, a dinuclear structure is found, D values for the model compound PHPh2 in THF have been measured.

引用

页码：4555 / 4557

页数：3

共 56 条

[1] STRUCTURAL CHARACTERIZATION OF THE SOLVATE COMPLEXES OF THE LITHIUM DIORGANOPHOSPHIDES [(LI(ET2O)PPH2)-INFINITY], [(LI(THF)2PPH2)-INFINITY], AND [(LI(THF)P(C6H11)2)-INFINITY] [J].

BARTLETT, RA ;

OLMSTEAD, MM ;

POWER, PP .

INORGANIC CHEMISTRY, 1986, 25 (08) :1243-1247

[2] SYNTHESIS AND SPECTROSCOPIC AND X-RAY STRUCTURAL STUDIES OF THE MESITYLPHOSPHINES PH22,4,6-ME3C6H2 AND PH2,4,6-ME3C6H2 AND THEIR LITHIUM-SALTS [LI(THF)3PH2,4,6-ME3C6H2] AND [(LI(OET2)P2,4,6-ME3C6H22)2] [J].

BARTLETT, RA ;

OLMSTEAD, MM ;

POWER, PP ;

SIGEL, GA .

INORGANIC CHEMISTRY, 1987, 26 (12) :1941-1946

[3]

Bauer W., 1992, ADV CARBANION CHEM, P89

[4] Diffusion coefficients of zirconocene-borate ion pairs studied by pulsed field-gradient NMR - evidence for ion quadruples in benzene solutions [J].

Beck, S ;

Geyer, A ;

Brintzinger, HH .

CHEMICAL COMMUNICATIONS, 1999, (24) :2477-2478

[5] 19F, 1H-HOESY and PGSE NMR studies of neutral trinuclear complexes of AuI and HgII:: Evidence for acid-base stacking in solution [J].

Burini, A ;

Fackler, JP ;

Galassi, R ;

Macchioni, A ;

Omary, MA ;

Rawashdeh-Omary, MA ;

Pietroni, BR ;

Sabatini, S ;

Zuccaccia, C .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (17) :4570-4571

[6] DIFFUSION OF CROWN ETHERS IN ALCOHOLS [J].

CHEN, HC ;

CHEN, SH .

JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (21) :5118-5121

[7] Variable coordination chemistry of the phospha(III)guanidinate anion; application as a metal-functionalised phosphine ligand [J].

Coles, MP ;

Hitchcock, PB .

CHEMICAL COMMUNICATIONS, 2002, (23) :2794-2795

[8] STRUCTURES IN SOLUTION OF ORGANOPHOSPHORUS-LITHIUM COMPOUNDS [J].

COLQUHOUN, IJ ;

MCFARLANE, HCE ;

MCFARLANE, W .

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS, 1983, 18 (1-3) :61-64

[9]

Dashti-Mommertz A, 1999, Z ANORG ALLG CHEM, V625, P954, DOI 10.1002/(SICI)1521-3749(199906)625:6<954::AID-ZAAC954>3.0.CO

[10]

2-B

← 1 2 3 4 5 6 →