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Me 2 Si(C 5 Me 4) 2 Cr : synthesis and crystal structure of a ligand-free ansa-chromocene

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2004

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Schaper, Frank
Wrobel, Olaf
Schwörer, Ralf

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http://nbn-resolving.de/urn:nbn:de:bsz:352-237256
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https://doi.org/10.1021/om049901x
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Organometallics. 2004, 23(14), pp. 3552-3555. ISSN 0276-7333. eISSN 1520-6041. Available under: doi: 10.1021/om049901x

Zusammenfassung

Me2Si(C5Me4)2Cr, the first example of an ansa-chromocene containing no additional ligands at chromium, was synthesized from Me2Si(C5Me4)2Li2 and CrCl2(THF)x in the presence of 2,6-xylyl isocyanide. The crystal structure of the complex was determined. The complex is paramagnetic and does not coordinate phosphines, phosphites, nitriles, amines, or acetylenes, but it reacts readily with 2,6-xylyl isocyanide to give mono- and diisocyanide complexes.

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540 Chemie

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ISO 690SCHAPER, Frank, Olaf WROBEL, Ralf SCHWÖRER, Hans-Herbert BRINTZINGER, 2004. Me 2 Si(C 5 Me 4) 2 Cr : synthesis and crystal structure of a ligand-free ansa-chromocene. In: Organometallics. 2004, 23(14), pp. 3552-3555. ISSN 0276-7333. eISSN 1520-6041. Available under: doi: 10.1021/om049901x
BibTex
@article{Schaper2004synth-23725,
  year={2004},
  doi={10.1021/om049901x},
  title={Me 2 Si(C 5 Me 4) 2 Cr : synthesis and crystal structure of a ligand-free ansa-chromocene},
  number={14},
  volume={23},
  issn={0276-7333},
  journal={Organometallics},
  pages={3552--3555},
  author={Schaper, Frank and Wrobel, Olaf and Schwörer, Ralf and Brintzinger, Hans-Herbert}
}
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    <dcterms:abstract xml:lang="eng">Me&lt;sub&gt;2&lt;/sub&gt;Si(C&lt;sub&gt;5&lt;/sub&gt;Me&lt;sub&gt;4&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;Cr, the first example of an ansa-chromocene containing no additional ligands at chromium, was synthesized from Me&lt;sub&gt;2&lt;/sub&gt;Si(C&lt;sub&gt;5&lt;/sub&gt;Me&lt;sub&gt;4&lt;/sub&gt;)&lt;sub&gt;2&lt;/sub&gt;Li&lt;sub&gt;2&lt;/sub&gt; and CrCl&lt;sub&gt;2&lt;/sub&gt;(THF)&lt;sub&gt;x&lt;/sub&gt; in the presence of 2,6-xylyl isocyanide. The crystal structure of the complex was determined. The complex is paramagnetic and does not coordinate phosphines, phosphites, nitriles, amines, or acetylenes, but it reacts readily with 2,6-xylyl isocyanide to give mono- and diisocyanide complexes.</dcterms:abstract>
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