Tris(trimethylsilyl)methane as an internal 13C NMR chemical shift thermometer

被引：0

作者：

Sikorski, WH ^{[1
]}

Sanders, AW ^{[1
]}

Reich, HJ ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1998年 / 36卷

关键词：

NMR; C-13; tris(trimethylsilyl)methane; chemical shift thermometer; temperature measurement; silanes;

D O I：

10.1002/(SICI)1097-458X(199806)36:13<S118::AID-OMR321>3.3.CO;2-W

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tris(trimethylsilyl)methane has excellent properties for an intern al chemical shift thermometer to measure temperatures in C-13 DNMR spectroscopy [Delta delta between the C-13 signals of Si(CH3)(3) and CH carbons]. It is chemically inert, soluble in most organic solvents and has an almost linear dependence of Delta delta on temperature. The sensitivity (approximately 1 degrees C Hz(-1) at 90 MHz) allows the measurement of temperature to within 1 degrees C. The chemical shift is solvent dependent, so each solvent mixture must be calibrated. Calibrations are presented for seven solvents. (C) 1998 John Wiley & Sons, Ltd.

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页码：S118 / S124

页数：7

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