heteronuclearadj.
/ˌhɛtərəʊˈnjuːklɪə/ a. Chemistry. Taking place on different rings in a polycyclic molecule.
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the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > organization of
intramolecular1884
infra-molecular1899
heteronuclear1900
isonuclear1900
homonuclear1938
1900 E. F. Smith tr. V. von Richter Org. Chem. (ed. 3) II. 390 It can first be ascertained whether the substituents are in the same nucleus (isonuclear) or in different nuclei (heteronuclear).
1951 I. L. Finar Org. Chem. I. xxix. 586 When NO2 or SO3H is in the 1- or 2-position, heteronuclear substitution occurs in position 5 or 8.
b. Physics and Chemistry. Of a molecule: composed of atoms whose nuclei are unlike, i.e. atoms of different elements or of different isotopes of the same element.
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the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > by nature of nucleus
heteronuclear1930
homonuclear1930
1930 Physical Rev. 36 617 The words even and odd are applied..to the complete ψ function of any molecule, homonuclear or heteronuclear.
1940 Physical Rev. 57 684/2 The HD molecule is heteronuclear and there is no quantum number of total spin.
1950 J. W. T. Spinks tr. G. Herzberg Molecular Spectra (ed. 2) I. iii. 94 This agrees with the observed infrared spectrum of HCl..and of other heteronuclear molecules.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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adj.1900