“…This latter criterion means that the number of identifiable component peaks, their relative intensity, and the splitting between them could be clearly related to one or the other of the four parameters to be determined, v cy aa and v cy bb À v cy cc , and v am aa and v am bb À v am cc , where the superscript indicates the cyanide or amide group. The simplest model system for starting values for the cyanide nitrogen nucleus was cyanamide, with a cyanide group directly on the a principle axis [15]. The structure of cyanoformamide gives a tilt of the nitrogen quadrupole environment relative to the a axis, but the projection on the a axis should still predominate.…”