Indirect detection of selenium-77 in nuclear magnetic resonance spectra of organoselenium compounds

✍ Scribed by T. Benjamin Schroeder; Constantin Job; Michael F. Brown; Richard S. Glass

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 488 KB
• Volume: 33
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1260330307

✦ Synopsis

Abstract

^77^Se was measured by inverse proton detection using multiple‐quantum ^1^H‐{^77^Se} correlation spectroscopy. One‐and two‐dimensional heteronuclear multiple quantum coherence (HMQC) experiments are reported for selenophene, benzeneselenol, dimethyl selenide, dimethyl diselenide, and D,L‐selenomethionine with a range of ^77^Se^1^H coupling constants from 9.5 to 54.2 Hz. In these compounds having protons with different ^77^Se^1^H coupling constants the different correlations can be selectively enhanced by varying the mixing time. The enhancement for indirect versus direct ^77^Se detection was estimated for dimethyl selenide yielding a value close to the theoretical enhancement.