Structural chemistry of polynuclear transition metal cyanides

2005 ◽  
pp. 1-21 ◽  
Author(s):  
Andreas Ludi ◽  
Hans Ulrich Güdel
Keyword(s):  
Transition Metal ◽  
Structural Chemistry ◽  
Metal Cyanides

Carbon-13/carbon-12 isotope effects on nitrogen-15 chemical shielding in some diamagnetic cyano complexes

1982 ◽  
Vol 60 (17) ◽  
pp. 2194-2197 ◽  
Author(s):  
Roderick E. Wasylishen
Keyword(s):  
Transition Metal ◽  
High Field ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Chemical Shielding ◽  
Cyanide Ion ◽  
Theoretical Formulation ◽  
Metal Cyanides ◽  
Shielding Constants ◽  
Cyano Complexes

Carbon-13/carbon-12 isotope-induced 15N chemical shifts of 0.06 to 0.10 ppm have been observed for the cyanide ion and several transition metal cyanides. In each case, the 15N resonance of the 13C labelled isotopomers is to high field of that in the corresponding carbon-12 species. The sensitivity of the 15N and 13C shielding constants in the cyanide ion to small changes in the CN bond length are evaluated using the theoretical formulation of Jameson: (∂σ(15N)/∂r)e = −872 ± 160 ppm/Å and (∂σ(13C)/∂r)e = −473 ± 90 ppm/Å. Nitrogen-15 chemical shifts in the metal complexes exhibit basically the same behaviour as do the 13C chemical shifts in these same complexes.

scholarly journals Double metal cyanides as heterogeneous Lewis acid catalysts for nitrile synthesis via acid-nitrile exchange reactions

2019 ◽  
Vol 55 (86) ◽  
pp. 12984-12987
Author(s):  
Carlos Marquez ◽  
Matthieu Corbet ◽  
Simon Smolders ◽  
Philippe Marion ◽  
Dirk De Vos
Keyword(s):  
Transition Metal ◽  
Exchange Reaction ◽  
Lewis Acid ◽  
Acid Catalysts ◽  
Exchange Reactions ◽  
Lewis Acid Catalysts ◽  
Metal Cyanides ◽  
Acid Nitrile

A series of transition metal-based double metal cyanides (DMCs) were studied as catalysts for the synthesis of nitriles via acid-nitrile exchange reaction.

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