单词 | plumbane |
释义 | plumbanen. Chemistry. ΚΠ 1812 J. Davy in Philos. Trans. (Royal Soc.) 102 185 As this compound, when decomposed by an alkali, affords the protoxide of lead, it may be called plumbane. 1814 H. Davy in Philos. Trans. (Royal Soc.) 104 69 I heated plumbane (muriate of lead) in sulphurous acid gas, and likewise in carbonic acid gas. 2. Lead tetrahydride, PbH4, an extremely unstable gas; (more generally) any of a (largely hypothetical) series of lead hydrides, analogous to the alkanes, of which PbH4 is the simplest member. Also: any substituted derivative of such a compound.Frequently as a formative element in the names of alkyl compounds of lead, regarded as substituted lead hydrides. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > lead > [noun] > naming element plumbane1920 the world > matter > chemistry > elements and compounds > metals > specific elements > lead > [noun] > compounds > others litharge of goldc1400 red leadc1450 tetraethyl lead1923 plumbane1950 1920 Chem. Abstr. 14 2182 The mol. wt. indicates that it has the double formula [(C8H9)3Pb]2 so that it might be considered as hexa-p-xylyldiplumbane. 1940 Jrnl. Amer. Chem. Soc. 62 2765/2 Two solutions of the diplumbane in redistilled, thiophene-free benzene were used. 1950 N. V. Sidgwick Chem. Elements I. 554 Lead hydride, plumbane, presumably PbH4..was prepared by Paneth in 1920. 1967 P. L. Pauson Organometallic Chem. iii. 78 The rather unstable plumbanes have only been obtained by direct reduction of the halides with suitable hydrides. 1971 E. Wiberg & E. Amberger Hydrides Elements of Main Groups I–IV x. 760 Trimethylplumbane, Me3PbH, and triethylplumbane, Et3PbH, decompose according to kinetics that are first-order for [R3PbH]. 1988 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 5) ix. 276 Plumbane (PbH4) is said to be formed in traces when Mg–Pb alloys are hydrolyzed by acid..but its existence is doubtful. 1994 Jrnl. Organometallic Chem. 481 75 Evidence for the intermittent formation of the much less stable plumbanes (CF3)2PbMeH and (CF3)3PbH during the hydrogenation of the corresponding bromides. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1812 |
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