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Tetraisopropylcyclopentadienyl Chlorides of Lanthanum, Neodymium, and Ytterbium
Author(s) -
Sitzmann Helmut,
Schmitt Oliver,
Weber, Frank,
Wolmershäuser Gotthelf
Publication year - 2001
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200101)627:1<12::aid-zaac12>3.0.co;2-s
Subject(s) - adduct , lanthanum , chemistry , ytterbium , neodymium , dimethoxyethane , dimer , crystal structure , sodium , inorganic chemistry , monomer , crystallography , medicinal chemistry , materials science , organic chemistry , polymer , laser , physics , optoelectronics , electrode , doping , optics , electrolyte
Bis(tetraisopropylcyclopentadienyl)chlorides of lanthanum ( 1 ) or neodymium ( 2 ) can be easily obtained in good yields from the respective trichlorides and sodium tetraisopropylcyclopentadienide. Both contain one equivalent of coordinated sodium chloride, for 2 a dimer [{(C 5 HR 4 ) 2 Nd (μ‐Cl)(μ 3 ‐Cl)Na(OEt 2 )} 2 ] (R = CHMe 2 ) with a folded sheet structure has been established by X‐ray crystal structure analysis. From sodium tetraisopropylcyclopentadienide and ytterbium trichloride or upon oxidation of octaisopropylytterbocene with hexachloroethane the mono‐ring complex [(C 5 HR 4 )YbCl 2 ] ( 3 ) (R = CHMe 2 ) has been obtained, which could be crystallographically characterized as monomeric dimethoxyethane adduct [(C 5 HR 4 )YbCl 2 (DME)].