HCN and HNC dimers. A new and stable variant

TY - JOUR

T1 - HCN and HNC dimers. A new and stable variant

AU - Bak, Børge

AU - Nielsen, Ole J.

AU - Svanholt, Henrik

PY - 1978/11/15

Y1 - 1978/11/15

N2 - A dimer of HCN, N-cyanoformimine or CH2NCN, hitherto only postulated as the repetitive unit of a polymer has been produced by pyrolysis (1200-1300 K) of dimethylcyanamide at low pressure (≈30 mtorr) and identified by simultaneous recording of its microwave spectrum (18.6-40.0 GHz). Later, the same dimer was detected in a sample of liquid HCN stored for 1-2 years at 277 K under exclusion of light. The new dimer is, therefore, stable under widely different conditions of pressure and temperature. The possibility of assigning the observed microwave spectrum to iminoacetonitrile or to cyclic azapropenylidenimine is discussed.

AB - A dimer of HCN, N-cyanoformimine or CH2NCN, hitherto only postulated as the repetitive unit of a polymer has been produced by pyrolysis (1200-1300 K) of dimethylcyanamide at low pressure (≈30 mtorr) and identified by simultaneous recording of its microwave spectrum (18.6-40.0 GHz). Later, the same dimer was detected in a sample of liquid HCN stored for 1-2 years at 277 K under exclusion of light. The new dimer is, therefore, stable under widely different conditions of pressure and temperature. The possibility of assigning the observed microwave spectrum to iminoacetonitrile or to cyclic azapropenylidenimine is discussed.

UR - http://www.scopus.com/inward/record.url?scp=49349123188&partnerID=8YFLogxK

U2 - 10.1016/0009-2614(78)89106-4

DO - 10.1016/0009-2614(78)89106-4

M3 - Journal article

AN - SCOPUS:49349123188

SN - 0009-2614

VL - 59

SP - 330

EP - 333

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 2

ER -