Large relativistic effects in molecular properties of the hydride of superheavy element 111
โ Scribed by Michael Seth; Peter Schwerdtfeger; Michael Dolg; Knut Faegri; Bernd A. Hess; Uzi Kaldor
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 340 KB
- Volume
- 250
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Relativistic and electron correlation contributions in the hydride of the recently discovered superheavy element 111 were ab-initio methods relativistic studied using o within different approaches. Relativistic effects decrease the (I 11)H bond distance by 0.42 A. As a result of this large bond contraction, the bond distance of (11 I)H ( 1.51 โข) is comparable to that of the hydride of its lighter congener AuH (1.52 A), but below that of AgH (I.60 A). The dissociation energy is relativistically increased by approximately 1.2 eV and the stretching force constant is more than quadrupled from 1.1 mdyn/A at the nonrelativistic level to 5.0 mdyn/A at the relativistic level.
๐ SIMILAR VOLUMES
Although most neutral d- and f-block atoms have nd(g-2)(n + 1)s(2) and (n - 1)f(g-2)(n + 1)s(2) ground configurations, respectively, where g is the group number (i.e., number of valence electrons), one-third of these 63 atoms prefer a higher d-population, namely via (n + 1)s-->nd "outer" to "inner"