Synthesis and X-ray structures of [Be(C5Me4H)2] and [Be(C5Me5)2]

Angewandte Chemie - International Edition

Volumn 39, Issue 11, 2000, Pages 1949-1951

  Del Mar Conejo, María ^a   Fernández, Rafael ^a   Gutiérrez Puebla, Enrique ^b   Monge, Ángeles ^b   Ruiz, Caridad ^b   Carmona, Ernesto ^a  

^a UNIVERSITY OF SEVILLE   (Spain)

^b INSTITUTO DE CIENCIA DE MATERIALES DE MADRID   (Spain)

Author keywords

Beryllium; Metallocenes; Sandwich complexes

Indexed keywords

BERYLLIUM; ORGANOMETALLIC COMPOUND;

ARTICLE; CRYSTAL STRUCTURE; REACTION ANALYSIS; SOLID STATE; SYNTHESIS;

EID: 0000956248     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/1521-3773(20000602)39:11<1949::AID-ANIE1949>3.0.CO;2-0     Document Type: Article

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21. 3 (2), were mounted on a Bruker-Siemens Smart CCD diffractometer equipped with a low-temperature device and a normal focus, 2.4 kW sealed tube X-ray source (Molybdenum radiation, λ = 0.71067 Å) operating at 50 kV and 20 mA. Data were collected at - 160°C using ω scans (3 < θ < 21°) for 1 (whose crystals exhibited poor quality so there were no reflections over 21 °) and 2 < θ < 31° for 2. The total number of reflections measured was 2661 and 8398 of which 777 and 2450 were considered independent, respectively. The structure was solved by direct methods (G. M. Sheldrick, SHELX-92, Program for Crystal Structure Determination. University of Cambridge, 1992). Hydrogen atoms were located in difference Fourier maps. Refinements were by full-matrix least-squares analysis with anisotropic thermal parameters for all non-hydrogen atoms and isotropic for hydrogen atoms in both cases. Final R values are R1 = 0.054 and 0.053, respectively. Crystallographic data (excluding structure factors) for the structures reported in this paper have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication nos. CCDC-137573 and -137574. Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax: (+44)1223-336-033; e-mail: deposit@ccdc.cam.ac.uk).
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