Expnuclei

Expnuclei in ANSIG means experiment nucleus, and is used to indicate which type of nucleus was detected in a dimension in a spectrum. The default expnucleus is always 1H.

Possible expnuclei are 1H, 15N, 13C, 13CO and 31P. There is currently no possiblity for a user to define other expnuclei in ANSIG.

13CO was added since it is used in many multidimensional heteronuclear protein NMR experiments essentially as if it were a distinct nucleus.

Per Kraulis 16 Apr 1996.