Synthesis and reactivity of heterobimetallic "A-frames" and rhodium-zirconium bonded complexes: structure of Cp*Zr(.mu.-OCH2Ph2P)2RhMe2

Zirconium(IV) Tris(phosphinoamide) Complexes as a Tripodal‐Type Metalloligand: A Route to Zr–M (M = Cu, Mo, Pt) Heterodimetallic Complexes

“…3.05 Å) [21] (98 and 97 % of the sum of the radii, respectively). The Rh-B interaction is proposed in Bourissou's complex, {[(o-iPr 2 P-C 6 H 3 ) 2 B(Ph)]RhCl} 2 , from chemical shifts of the 11 B NMR spectroscopic resonance and the Rh-B distance found from X-ray crystallography. This was supported by DFT calculations {BP86/[CEP-31G(Rh), 6-31G*(other elements)]}, in which bonding interaction was observed at the HOMO of the complex.…”

“…[11] Figure 1. Monodentate, bidentate, and tridentate phosphorus ligands containing a Lewis acidic center.…”

Highly Polar Metal-Metal Bonds in “Early-Late” Heterodimetallic Complexes

“…This highly unequal contribution of the two metal centers to the metal ± metal bonding orbital may be interpreted as qualitatively representing a highly polar bond. Shortly thereafter, Wolczanski and coworkers published extended Hückel MO calculations on various early ± late heterobimetallic complexes [58] and, more recently, Selent et al reported the results of an EHMO study of [(tBuO) 3 TiÀM(CO) n ] (M Co/Mn, n 4/5). [59] All of these studies offered a qualitative analysis of the principal bonding interactions between the early and the late metal centers.…”

Homo- and heteroleptic group 4 2-(diphenylphosphino)pyrrolide complexes: Synthesis, coordination chemistry and solution state dynamics

“…Early/late heterobimetallic complexes have been the focus of extensive study, under the presumption that pairing highly differentiated metal centers may effect the greatest modification of reactivity compared to that of a monometallic species [16][17][18][19][20][21][22][23][24]. In this regard, bulky, bridging phosphinoamide ligands have been extensively used to coordinate Lewis-acidic early transition metals to electron-rich late transition metals [25][26][27][28], resulting in a dative Z-type [29] M Late ?…”