Abstract

A variety of complexes in both the mono- and trivalent oxidation states can be isolated by reacting solutions containing the rhodium halocarbonyl anion [Rh(CO)2X2]− (X = Cl or Br) with various nitrogen donor ligands. In this manner the carbonyl complexes [RhIII(CO)(L-L)HX2] (L-L = 1,10 phenanthroline or 2,21 dipyridyl; X = Cl or Br) and [RhI(CO)2(L-L)X] (L-L = o-phenylenediamine; X = Cl or Br) can be prepared. Similar reactions using the ligands, 2-aminopyridine (ap), aniline (an) and pyridine (py) gave the complexes [RhI(ap)2X], [RhI(an)3X] and [RhIII(py)3Xe] respectively.

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