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(Cyanocyclopentadienyl)potassium and ‐cesium
Author(s) -
Herdtweck Eberhardt,
Köhler Frank H.,
Mölle Rüdiger
Publication year - 2005
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400663
Subject(s) - chemistry , caesium , alkali metal , crystallography , potassium , nuclear magnetic resonance spectroscopy , spectroscopy , nmr spectra database , zigzag , crystal structure , ring (chemistry) , metal , ion , inorganic chemistry , stereochemistry , spectral line , organic chemistry , physics , geometry , mathematics , quantum mechanics , astronomy
(Cyanocyclopentadienyl)potassium and ‐cesium have been synthesized and subsequently characterized by single‐crystal X‐ray structure determinations, 1 H and 13 C NMR spectroscopy in solution as well as by 133 Cs NMR spectroscopy in solution and the solid‐state. Both salts crystallize in zigzag chains which are crosslinked differently through the cyano substituents. There is significant distortion of the cyanocyclopentadienide ion toward a fulvalene‐like structure because the alkali‐metal ions do not only interact with the five‐membered ring but also with the cyano groups. The 133 Cs NMR spectra reflect the bending of the [CpCsCp] – fragments of the chains. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)