Preparation and Properties of Anhydrous Rhodium-(II) Acetate and Some Adducts Thereof

Multinuclear magnetic resonance study of chiral mesoionic oxa‐ and thiatriazole and tetrazole derivatives: adducts with dirhodium complexes and chiral recognition

“…This has been shown for a number of model compounds on the basis of 15 N adduct formation shifts as well as related 1 H and 13 C data (J. Jaźwiński and H. Duddeck, in preparation), and fits the observation that the adducts are red in color. 18 In contrast, the adduct of 8 is green, a strong indication that the oxygen atom O-6 is the binding site. 13 The assignment of the adduct signals followed the same procedures as those of the free ligands (see below).…”

Diastereospecific Control in the Synthesis of Enantiomerically Pure Bis-Equatorial Rhodium(II) Catalysts by Chiral Phosphanes

“…Rh 2 (O 2 CCF 3 ) 4 2(Me 2 CO), [12] the phosphanes (ϩ)PPh 2 (CHϪR* ϪOH), [8] and (Ϫ)PPh 2 (CHϪR*ϪOH) [8] and the diazo compounds 3, [9] 6, [10] and 9 [11] were prepared according to literature procedures.…”

The Electronic Single Crystal Spectrum of Binuclear Rhodium(II)acetate Hydrate Rh2(CH3COO)4· 2 H2O

“…The z-polarized absorption band at 16,100 cm -1 is assigned to the transition aig -> a2u, the xypolarized band at 17,300 cm -1 arises from the transition eg ~> a2u. This classification explains the polarization of these two bands and also the fact that these bands are depending greatly on the nature of the ligand [4,5], for a2u originates from the essentially z-oriented dz2-state. The z-polarized band at 21,500 cm -1 has to be assigned to the transition b2g->biu, the 23,500 cm -1 ^-transition to eg ->biu.…”

“…Rh2(CH3COO)4 • 2 H20 was prepared by the method of Johnson et al [5] with slight changes [6]. Small single crystals were grown by allowing a drop of aqueous solution to evaporate between thin quartz discs (0.5 mm).…”