Synthesis and structure of some bis(cyclopentadienyl)titanium(III) metal halides

Abstract

behavior of the pyridine ring. The shifts cannot be unambiguously assigned to models at present since the experimental data can be fit by more than one set of geometrical parameters.Nonetheless, the pyridine ring appears to be positioned such that its symmetry axis makes a roughly 90°a ngle with respect to the Ln~N+ vector, as was found previously.14 We plan to continue these investigations by studying cations in which the steric bulk in the vicinity of the nitrogen atom varies in a controlled fashion.

Synthesis and Characterization of Heterobimetallic Tantalum–Rhodium and Tantalum–Iridium Complexes Connected by a Tantalacyclopentadiene Fragment

“…[17] Traditional metal‐based reductants often produced salt‐contacted late complexes and over‐reduced species, making it difficult to isolate pure low‐valent metal complexes. [18] When complex 3 was treated with 7a in toluene, Ta–Rh dichloride complex 8 was isolated in 95% yield with the elimination of 2 equiv. of ClSiMe 3 and 1 equiv.…”

Synthesis and structural characterization of [(C5H4)SiMe2(N-t-Bu)]Ti[(o-C6H4)C(Ph)C(Ph)], generated via an alkyne-Ti benzyne coupling reaction

“…These solvents were then transferred to storage flasks containing either [(C 5 H 5 ) 2 Ti(l-Cl) 2 ] 2 Zn [14] or potassium benzophenone ketyl. Hexamethyldisiloxane was dried over (C 5 H 5 ) 2 ZrMe 2 .…”

Samarium Diiodide-Mediated Reductive Coupling of Epoxides and Carbonyl Compounds: A Stereocontrolled Synthesis of C-Glycosides from 1,2-Anhydro Sugars

“…To test the feasibility of this approach, we performed exploratory experiments with epoxide 2 a , readily available from the protected D ‐glucal 1 a by oxidation with DMDO (Scheme ) 10. Initial attempts to couple 2 a to isobutyraldehyde11 in the presence of [Cp 2 TiCl] 2 11i, 12 as the reducing agent produced only minor amounts (<20 %) of the C‐glycoside 5 a (see Table 1…”