scispace - formally typeset
Journal ArticleDOI

Extrem kurze Quecksilber-Quecksilber-Kontakte in peri-dimercurierten Naphthalinverbindungen

TLDR
In this paper, the structure of 2-DMSO has been determined by X-ray diffraction methods, where the lattice contains discrete adducts in which the two mercury atoms are bridged by the DMSO oxygen atom.
Abstract
1-Naphthylquecksilberchlorid (1) und 1,8-Naphthalindiylbis-(quecksilberchlorid) (2) werden aus den zugehorigen Naphthyllithium-Verbindungen und HgCl2 mit ca. 80% Ausbeute erhalten. Alternativ kann 2 auch aus 1,8-Naphthalindiyldiborsaureanhydrid und HgCl2 gewonnen werden (Ausbeute 85%). Von 2·DMSO wurde die Kristallstruktur bestimmt. Es liegen diskrete Addukte vor, in denen die beiden Hg-Atome durch das O-Atom des DMSO uberbruckt werden. Die HgCl-Einheiten sind durch Verzerrungen im Naphthalingerust, durch Winkelung der Achsen CHgCl und durch deren Auslenkung aus der Naphthalinebene voneinander weggebogen, so das ein Hg·· Hg-Kontakt von 3.102(1) A resultiert. – 2 symmetrisiert sich bei der Einwirkung von NaI in wasrigem Ethanol unter Bildung von Bis(μ-1,8-naphthalindiyl)diquecksilber (3). Bei der Strukturanalyse dieser im Kristall zentrosymmetrischen Verbindung wurde der bisher kurzeste „nichtbindende” Hg··Hg-Kontakt von 2.797(1) A gefunden. Auch in 3 sind die CHgC-Achsen abgewinkelt [CHgC = 173.3(5)°], und das Naphthalingerust ist verzerrt. Extremely Short Mercury-Mercury Contacts in peri-Dimercurated Naphthalene Compounds 1-Naphthylmercury chloride (1) and 1,8-naphthalenediylbis(mercury chloride) (2) were prepared from the corresponding naphthyllithium precursors and HgCl2 in ca. 80% yield. In an alternative route, 2 can be obtained from 1,8-naphthalenediyldiboric acid anhydride and HgCl2 in 85% yield. The structure of 2·DMSO has been determined by X-ray diffraction methods. The lattice contains discrete adducts in which the two mercury atoms are bridged by the DMSO oxygen atom. The HgCl moieties are bent away from each other through distortions of the naphthalene framework and of the CHgCl axes, which results in a Hg ‥ Hg distance of 3.102(1) A. – Symmetrization of 2, induced by treatment with NaI in aqueous ethanol, affords bis(μ-1,8-naphthalenediyl)dimercury (3). In the X-ray structure determination of this compound the shortest „non-bonding” Hg·Hg contact reported in the literature has been detected: Hg1··Hg2 = 2.797(1) A. The molecule also shows distortions in the naphthalene framework and in the CHgC axes [CHgC = 173.3(5)°].

read more

Citations
More filters
Journal ArticleDOI

Structure and bonding in metal sulfoxide complexes

TL;DR: In this paper, structural parameters of free and coordinated sulfoxides are comprehensively reviewed and average values derived, and principal component analyses have been performed in order to evidence the deformation pathways of sulfoxide upon coordination.
Journal ArticleDOI

Structure and bonding in metal sulfoxide complexes: an update

TL;DR: In this article, the average SO bond distances were calculated from accurate X-ray data, showing a decrease from free sulfoxides (avearge 1.492(1) A) to S-bonded metal complexes (average 1.4738(7) A).
Journal ArticleDOI

Ab initio studies of the dimers (HgH2)2 and (HgMe2)2. Metallophilic attraction and the van der Waals radii of mercury

TL;DR: In this paper, the authors used the dispersion and electrostatic multipole components to determine the energy of the "metallophilic" attraction between two Hg(II) compounds.
Journal ArticleDOI

Naphthalene derivatives peri-substituted by Group 13 elements

TL;DR: A review of the chemistry of naphthalene derivatives substituted by Group 13 moieties at peri-positions can be found in this paper, where different synthetic approaches have been considered.
Journal ArticleDOI

Lewis Acidic Behavior of Fluorinated Organomercurials

TL;DR: In this paper, the synthesis, structures, and properties of neutral Lewis adducts involving fluorinated organomercurials such as (CF3)2Hg, (C6F5)HgCl, (c6f5) 2Hg and (o-C6f4) Hg]3 are reviewed.
References
More filters
Journal ArticleDOI

Comprehensive Organometallic Chemistry

Dietmar Seyferth
- 01 Jul 1984 - 
Journal ArticleDOI

Relativity and the periodic system of elements

TL;DR: In this article, the relativistic effects are defined as the difference between the case of a finite speed of light as in the world we live in and of an infinite speed of time as assumed by most theoretical chemistry.
Journal ArticleDOI

Relativistic effects on chemical properties

TL;DR: In this article, special or anomalous chemical effects are examined in relation to periodic table trends, and the degree to which these are relativistic effects are determined, and it is noted that the degree of these effects and the introduction of 4f electrons (the usual textbook explanation of the anomalies) affect chemical behavior are of approximately equal magnitude.