Nitrosyl rhenium complexes: Syntheses, properties, and structures of acetylacetonato derivatives

Some new complexes of rhenium containing monocoordinating acetylacetone viz. [Re(NO)(acac) 2 (Cl)H 2 O], Re(NO)(acac) 3 (acacH)(H 2 O) 2 have been synthesized by reacting acetylacetone with either Re(NO)Cl 3 · H 2 O or Re(NO)(OH) 3 · H 2 O. The preparation of [Re(NO)(py)(acac) 2 (Cl) · H 2 O], [Re(NO)(acac)(OH)(Cl) · H 2 O], [Re 2 (NO) 2 (acacH) 3 (acac) 2 · Cl 4 ], [Re(NO)(acac) 2 (OH) · H 2 O] · 2 H 2 O have also been described. These complexes were characterized through their elemental analyses, u.v., vis, i.r., 1 Hn.m.r., magnetic, and conductance data.