Synthesis and structure of dicarbonyl(.eta.3-indenyl)(.eta.5-indenyl)vanadium(II). An unusual slipped ring in a metal radical

ansa-Metallocene imide niobium compounds

“…Selected bond distances and angles of both molecules are given in Table 2 and the fractional atomic coordinates for all non-hydrogen atoms appear in Table 3. The metal-nitrogen bond lengths are 1.755(3) and (14) 0.6464(4) ~ ( 1 5 ) 0.4648(4) C (16) 0.4259(7) c ( 17) 0.3896(6) C (18) 0.40 15 (4) c ( $-fashion to the metal, and a significant ring-slip distortion is apparent.The view of 1 through the Nb-C5H5 ring normalmetal vector, shown in Fig. lb, reveals that the metal is displaced in the direction of the ring carbons C(30) and C(3 I), which are staggered with respect to the Nb-N bond.…”

Synthesis and characterization of (η5-cyclopentadienyl)(η5-(1-(η5-cyclopentadienyl))-2-phenyl-3-ethyl-1-nickelaindenyl)nickel, a new nickelacyclic analogue of nickelocene

“…Final R indices R 1 = 0.0370, R 1 (all data) = 0.0582. Table 1 Selected bond lengths (Å ) and angles (degree) in 2 a within the 6-membered ring [13,15]. We did not observe this phenomenon in 2.…”

Synthesis and reactivity of 2-(tert-butylcyclopentadienyl)-indenyl dinuclear ruthenium complex [η5:η5-(tBuC5H3)(C9H6)]Ru2(CO)4: Halogen induced Ru cleavage from indenyl ring

“…At present we still cannot explain how the cleavage process takes place. Due to the ring slippage, the g 5 , g 3 , g 1 coordination modes have been found for indenyl ligand and have been well characterized [28][29][30][31][32][33][34][35][36]. g 1 coordination mode is associated with fluxional behavior between the C1 and C3 bonding positions [35,36].…”