Metal complexes
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United States of America Patent
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Apr 19, 2005
Grant Date -
Oct 2, 2003
app pub date -
Mar 25, 2003
filing date -
Mar 28, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Metal complexes of metals of the scandium group with an azo compound which conforms to the formula (I) or to one of its tautomeric structures ##STR1## where R is OH, NH.sub.2, NH--CN, arylamino or acylamino, R' is NH.sub.2, NH--CN, arylamino or acylamino and R.sup.1 and R.sup.1 ' are independently --OH or --NH.sub.2.
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