Please use this identifier to cite or link to this item:
doi:10.22028/D291-23954
Title: | Die Kristall- und Molekülstruktur von Bis(trimethylsilyldiimin) |
Author(s): | Veith, Michael Bärnighausen, H. |
Language: | English |
Year of Publication: | 1974 |
OPUS Source: | Acta crystallographica / B. - 30. 1974, S. 1806-1813 |
SWD key words: | Molekülstruktur Kristallstruktur |
DDC notations: | 500 Science |
Publikation type: | Journal Article |
Abstract: | The crystal structure of bis(trimethylsilyl)diimine, (CH3)3Si-N=N-Si(CH3)3, has been determined from three-dimensional X-ray data collected on a Stoe two-circle diffractometer at -130°C (Mo K(alpha) radiation, 673 reflexions, R=0·067). The crystals are monoclinic, space group P2(1/c), with cell dimensions a=6·12 (2), b=10·788 (3), c=8·892 (3) Å, and ß=103·4 (1)°. There are only two molecules in the unit cell and, consequently, the crystal site symmetry must be 1¯ (Ci). For several reasons, however, the free molecule is to be expected to adopt the higher point symmetry 2/m (C2h). Important molecular dimensions are the very short N-N bond (1·17 Å), the unusual long Si-N bond (1·81 Å), and the Si-N-N angle of 120°, which indicate the exceptional position of this compound among the other known trans-X-N=N-X systems. It is shown that some geometrical details of the crystal and molecular structure result from the stereochemical activity of the nitrogen lone pair. |
Link to this record: | urn:nbn:de:bsz:291-scidok-19582 hdl:20.500.11880/24010 http://dx.doi.org/10.22028/D291-23954 |
Date of registration: | 22-Dec-2008 |
Faculty: | SE - Sonstige Einrichtungen |
Department: | SE - INM Leibniz-Institut für Neue Materialien |
Collections: | INM SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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