Synthesis and characterization of Chromocene (cas 1271-24-5)s containing bulky cyclopentadienyl ligands

Add time:08/12/2019    Source:sciencedirect.com

Two equivalents of K[Cp′] (Cp′=C5(i-Pr)3H2, C5(i-Pr)4H, C5(t-Bu)2H3) react with CrCl2 in THF to give the corresponding chromocenes, Cp′2Cr, in good yield. Despite the presence of bulky substituents on the rings that could affect their properties, the complexes are extremely air- and moisture-sensitive, and possess a low-spin ground state. The low-spin paramagnetic nature of each chromocene was confirmed by magnetic susceptibility measurements. The solid-state structure of [C5(i-Pr)3H2]2Cr was obtained using single crystal X-ray analysis. It displays rigorously parallel rings, with an average Cr–C(ring) distance of 2.17(1)Å; the chromium resides on a crystallographically imposed inversion center. The orientation of the isopropyl groups minimizes unfavorable steric interactions between the rings.

We also recommend Trading Suppliers and Manufacturers of Chromocene (cas 1271-24-5). Pls Click Website Link as below: cas 1271-24-5 suppliers

Prev:ansa-Chromocene (cas 1271-24-5)s: An alternative route to Me2Si(C5Me4)2Cr
Next:Crystal and molecular structure of Chromocene (cas 1271-24-5) (η5-C5H5)2Cr)