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Molecular and Ionic Hydrogen Isocyanide (CNH) Adducts with N‐H…︁O‐ and “Super‐Short” N‐H…︁N‐Hydrogen Bridges: Metal‐Stabilized Hydrogen Bisisocyanides
Author(s) -
Bär Eberhard,
Fuchs Joachim,
Rieger Dirk,
AguilarParrilla Francisco,
Limbach HansHeinrich,
Fehlhammer Wolf P.
Publication year - 1991
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199100881
Subject(s) - adduct , hydrogen bond , chemistry , hydrogen , isocyanide , metal , ionic bonding , crystallography , medicinal chemistry , inorganic chemistry , molecule , ion , organic chemistry
The metal‐coordinated hydrogen isocyanide in [Cr(CO) 5 CNH] proved to be an ideal hydrogen‐bond former. Its discrete adducts with ethers and cyano complexes are surprisingly stable and some are sublimable ( 1 , [Cr] = Cr(CO) 5 ). According to IR, X‐ray structure, and 15 NMR investigations, strong N‐H…O hydrogen bonds are present. The shortest bonds are found for 2 ([Fe] = FeCp(diphos)) and 3 . In 3 , the N‐H…N bonds are symmetrical. diphos = bis(diphenylphosphino)ethane.