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An Investigation of the Acceptor Properties of Some Organomercurials by Molecular Weight Measurements and X-ray Photoelectron Spectroscopy

Glen B. Deacon ; Chemistry Department, Monash University, Clayton, Vic. 3168, Australia
Anna Florenti ; Chemistry Department, Monash University, Clayton, Vic. 3168, Australia
Marshall Hughes ; Chemistry Department, University of Tasmania, P.O. Box 252C, Hobart, Tas. 7001, Australia
Frank P. Larkins ; Chemistry Department, University of Tasmania, P.O. Box 252C, Hobart, Tas. 7001, Australia


Puni tekst: engleski pdf 10.988 Kb

str. 757-764

preuzimanja: 237

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Sažetak

Stability constants from molecular weigth measurements for
the complexes R2Hgbpy (bpy = 2,2'-bipyridyl) in carbon tetrachloride
and benzene at 25 °C decrease in the order R = CaF5 >
> p-HC6F4 = p-MeOC6F4 2': o-HC5F4, and for R2HgOPPha, in the
order R = o-HC6F4 > C5F5 > p-HC5F4 = p-MeOC5F4 with higher
values in the former solvent. The unexpectedly greater stability of
(o-HC5F4)2HgOPPha than (C5F5)2HgOPPha has been related to the
structures of the parent mercurials. X-ray photoelectron spectroscopy
shows that the acceptor properties of mercury compounds
decrease in the order HgCl2 > (C5F5)2Hg = (p-HC5F4)2Hg = (o-
HC0F4)2Hg > (p-MeOCoF4)2Hg > (C5Cls)2Hg 2': Ph2Hg > Hg0• A similar study of RHgX compounds suggests that there is reasonable
additivity of the electrophilic effects of different R and X groups
on the mercury 4f binding energy.

Ključne riječi

Hrčak ID:

194145

URI

https://hrcak.srce.hr/194145

Datum izdavanja:

20.10.1984.

Posjeta: 494 *