heteronuclearadj.

/ˌhɛtərəʊˈnjuːklɪə/

Etymology: < hetero- comb. form + nuclear adj.

a. Chemistry. Taking place on different rings in a polycyclic molecule.

ΘΚΠ

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.

ΘΚΠ

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).

单词	heteronuclear
释义	heteronuclearadj. /ˌhɛtərəʊˈnjuːklɪə/ Etymology: < hetero- comb. form + nuclear adj. a. Chemistry. Taking place on different rings in a polycyclic molecule. ΘΚΠ 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. ΘΚΠ 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). < adj.1900
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