摘要:
                                Rh-2(O2CCH3)(4). 2C=NC6H4R (R = (CH3)(2)N-(1), -H (2), -CF3 (3)) were synthesized and characterized by X-ray crystallography. The structures exhibited several common features: (i) a relatively short Rh-C bond (2.148(4) Angstrom (1), 2.133(4) Angstrom (2), and 2.122(4) Angstrom (3)), (ii) an inversion center between the two rhodium atoms, (iii) coplanar aryl rings, and (iv) a significant deviation from linearity in the Rh-C-N bond angle. Comparison to other rhodium carboxylate complexes indicates the presence of pi-back-bonding and by extension, pi-back-bonding in rhodium-carbenoid systems.