Organometallic compounds of the lanthanides. 42/sup 1/ bis(dimethyloxyethane)lithium bis(cyclopentadienyl)bis(trimethylsilyl)lanthanide complexes

Journal Article · Thu Sep 01 00:00:00 EDT 1988 · Organometallics; (United States)

DOI:https://doi.org/10.1021/om00099a016· OSTI ID:5776347

Schumann, H; Nickel, S; Loebel, J; Pickardt, J

The trichlorides of Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu react with NaC/sub 5/H/sub 5/ in tetrahydrofuran in the presence of dimethoxyethane (dme) with formation of bis(cyclopentadienyl)lanthanide chloride complexes of the types (C/sub 5/H/sub 5/)/sub 2/Ln(/mu/-Cl)/sub 2/Na(dme). The reactions of these organolanthanide halide complexes with (trimethylsilyl)lithium in dme yield compounds of the type (Li(dme)/sub 2/)((C/sub 5/H/sub 5/)/sub 2/Ln(SiMe/sub 3/)/sub 2/) (Ln = Sm, Dy, Ho, Er, Tm, Lu). C/sub 5/H/sub 5//sub 2/Sm(/mu/-Cl)/sub 2/Na(dme) reacts with (trimethylgermyl)lithium in dme/pentane with formation of (Li(dme)/sub 3/)((C/sub 5/H/sub 5/)/sub 3/SmClSm(C/sub 5/H/sub 5/)/sub 3/) (7a.). The new compounds have been characterized by elemental analyses and IR and NMR spectra. The structure of (Li(dme)/sub 3/)(C/sub 5/H/sub 5/)/sub 3/SmClSm(C/sub 5/H/sub 5/)/sub 3/ (7a) has been elucidated through complete X-ray analysis. The crystals are monoclinic with a = 14.00 (1) /angstrom/, b = 13.38 (2) /angstrom/, c = 23.49 (3) /angstrom/, /beta/ = 93.37 (9)/degree/, space group P2/sub 1//n,Z = 4, and R = 0.0411 for 4671 reflections. The (Cp/sub 3/SmClSmCp/sub 3/)/sup /minus// anion consists of two Cp/sub 3/Sm units bridged by a chlorine atom with Sm-Cl distances of 2.827 (2) and 2.798 (2) /angstrom/.

• Research Organization: Technischen Universitaet Berlin (Germany, F.R.)
• OSTI ID: 5776347
• Journal Information: Organometallics; (United States), Vol. 7:9
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORIDES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
DYSPROSIUM COMPLEXES
ERBIUM COMPLEXES
HOLMIUM COMPLEXES
LUTETIUM COMPLEXES
ORGANOMETALLIC COMPOUNDS
SAMARIUM COMPLEXES
THULIUM COMPLEXES
EXPERIMENTAL DATA
INFRARED SPECTRA
LATTICE PARAMETERS
MULTI-ELEMENT ANALYSIS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
SPACE GROUPS
X-RAY DIFFRACTION
CHEMICAL ANALYSIS
CHLORINE COMPOUNDS
COHERENT SCATTERING
COMPLEXES
DATA
DIFFRACTION
HALIDES
HALOGEN COMPOUNDS
INFORMATION
MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
RARE EARTH COMPLEXES
RESONANCE
SCATTERING
SPECTRA
SYNTHESIS
400201* - Chemical & Physicochemical Properties