Splits the spin system into several independent subsystems, each containing only one instance of a user specified isotope or isotope tuple that is deemed "dilute". All spin system data is updated accordingly. Basis set information, if found, is destroyed.
spin_system - spin system object obtained from create.m function isotope - isotope specification string, for example '13C' tuples - 1 returns all subsystems with a single instance of the isoto- pe, 2 returns all subsystems where two instances of the iso- tope are present, etc.
spin_systems - a cell array of spin system objects, with each cell cor- responding to one of the new- ly formed isotopomers.
HSQC and HMQC examples in examples/nmr_liquids folder use this function for single-spin dilution. INADEQUATE examples use it for spin pair dilution.