| 释义 |
pnicogen Chem.|ˈpnɪkəʊdʒən|
[f. Gr. πνίγ-ειν to choke, stifle (in allusion to nitrogen) + -o + -gen.]
Any of a series of elements in group V of the periodic table, viz. nitrogen, phosphorus, arsenic, antimony, and bismuth.
1966Progress Sci. & Technol. Rare Earths II. 76 The term ‘pnicogen’ seems to be gaining favor as a group name for the Va group of elements. 1971Nomencl. Inorg. Chem. (I.U.P.A.C.) (ed. 2) 11 The use of the collective names ‘pnicogen’ (N, P, As, Sb and Bi) and ‘pnictides’ is not approved.
So ˈpnictide [-ide], a binary compound of a pnicogen with a more electropositive element or radical.
1966Progress Sci. & Technol. Rare Earths II. 35 (heading) Thermodynamic and magnetic properties of the rare earth chalcogenides and pnictides. 1973Physical Rev. B. VIII. 5345 The fourth-order crystal-field parameters for the phosphides and for other rare-earth pnictides fall on a universal curve which is close to that predicted..for the light rare earths. 1977Sci. Amer. May 41/1 Removing an electron from a trigonally bonded chalcogen atom leads to a low-energy state, because the atom then becomes structurally similar to a pnictide atom in its proper configuration. |