Molecular mass estimation of derivatized compounds: a PFG NMR study | Zendy

Crutchfield Christopher A. | Zendy; Harris Douglas J. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Molecular mass estimation of derivatized compounds: a PFG NMR study

Author(s) -

Crutchfield Christopher A.,

Harris Douglas J.

Publication year - 2007

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.1991

Subject(s) - chemistry , tetramethylsilane , carboxylic acid , alcohol , phenol , bisphenol a , organic chemistry , isocyanate , molecule , mass spectrometry , pulsed field gradient , amine gas treating , chromatography , epoxy , polyurethane

Pulsed‐field gradient (PFG) 1 H and 31 P NMR methods were developed to quantitatively estimate the molecular mass of compounds, derivatized with either trichloroacetyl isocyanate (TAI) or 2‐chloro‐4,4,5,5‐tetramethyl‐1,3,2‐dioxaphospholane (chlorophospholane). These agents provide selective analysis with high sensitivity for molecules containing alcohol, amine, carboxylic acid, or thiol functional groups. Tetramethylsilane (TMS) or bisphenol A was used as internal diffusion reference. The empirical relationship between relative diffusivity and molecular mass was established for a set of mono‐ and difunctional compounds with molecular masses in the range 32–330 g/mol. The utility of the method was demonstrated by analyzing alcohol, phenol, and carboxylic acid components in lubricating oil. Copyright © 2007 John Wiley & Sons, Ltd.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research