Cyclopentadienyl ring metathesis with bis(pentamethylcyclopentadienyl)calcium as a route to mixed ring organolanthanide complexes; the crystal structure of (C5Me5)2Nd(C5H5)
1995; Elsevier BV; Volume: 14; Issue: 2 Linguagem: Inglês
10.1016/0277-5387(94)00316-7
ISSN1873-3719
AutoresPamela S. Tanner, David J. Burkey, Timothy P. Hanusa,
Tópico(s)Synthesis and characterization of novel inorganic/organometallic compounds
ResumoBis(pentamethylcyclopentadienyl)calcium, (C5Me5)2Ca, can be made by the reaction of Ca[N(SiMe3)2]2 with C5Me5H in toluene. It undergoes cyclopentadienyl ring metathesis with tris(cyclopentadienyl)lanthanide complexes, Cp3Ln (Ln = La, Nd, Sm) in toluene to generate the mixed ring complexes (C5Me5)2LnCp. The X-ray crystal structure of (C5Me5)2NdCp shows that the complex is a sterically crowded monomer with η5-C5Me5 and Cp rings. The average NdC distances for both the C5Me5 and Cp rings are 2.76–2.79 Å.
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