Some new cationic di- and tricarbonyl complexes of technetium(I)

✍ Scribed by H. H. Knight Castro; C. E. Hissink; J. H. Teuben; W. Vaalburg; K. Panek

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 367 KB
• Volume: 111
• Category: Article
• ISSN: 0165-0513
• DOI: 10.1002/recl.19921110208

✦ Synopsis

Abstract

Some new low‐valent, cationic complexes of technetium‐99 have been prepared. Oxidation of Tc~2~(CO)~10~ (1) with NOPF~6~ in acetonitrile gave [Tc(CH~3~CN)(CO)~5~]PF~6~ (2) quantitatively. This complex constitutes a useful precursor for cationic carbonyl complexes, as exemplified by a variety of reactions with bi‐ and tridentate ligands from which air‐stable, water‐soluble complexes of type [LTc(CO)~3~]^+^ (L = 1,4,7‐triazacyclononane, 1,4,7‐trimethyl‐1,4,7‐triazacyclononane and 1,4,7‐trithiacyclononane) have been isolated and characterized. A series of mixed complexes of technetium(I) of general formula {Tc(N,N)[P(OR)~3~]~2~(CO)~2~}PF~6~ (N,N = 2,2′‐bipyridine, 4,4′‐dimethyl‐2,2′‐bipyridine and R = methyl, isopropyl) has also been prepared.