Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Amavadin
open-in-new
<p>Amavadin is a <a href="/facts/Vanadium/UvKkKTSm">vanadium</a>-containing <a href="/facts/Anion/wrbwhF3z">anion</a> found in three species of poisonous <i><a href="/facts/Amanita/SeajBxmT">Amanita</a></i> mushrooms: <i><a href="/facts/Amanita_muscaria/2VybE2L2">A. muscaria</a></i>, <i>A. regalis</i>, and <i>A. velatipes</i>. Amavadin was first isolated and identified in 1972 by Kneifel and Bayer. This anion, which appears as a blue solution, is an eight-coordinate vanadium <a href="/facts/Complex_(chemistry)/1tCyeQUm">complex</a>. A Ca2+ cation is often used to crystallize amavadin to obtain a good quality X-ray diffraction. Oxidized amavadin can be isolated as its PPh4+ salt. The oxidized form contains vanadium(V), which can be used to obtain an NMR spectrum. </p>