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Université de Fribourg

The first phospho­ramide-mercury(II) complex with a Cl₂Hg-OP[N(C)(C)]₃ segment

Saneei, Anahid ; Pourayoubi, Mehrdad ; Crochet, Aurélien ; Fromm, Katharina M.

In: Acta Crystallographica C, 2016, vol. 72, p. 230-233

Mercury(II) exhibits a strong preference for linear coordination which has been attributed to relativistic effects splitting the 6p orbitals and promoting sp hybridization. If the two ligands attached to the mercury(II) ion are weak donors, the metal ion can act as a good Lewis acid and expand its coordination number. Moreover, mercury has a special affinity for softer bases,...

Université de Fribourg

A structural study of copper(II) carboxylates: Crystal structure and physical characterisation of [Cu₂(2-bromopropanoato)₄(caffeine)₂]

Valach, Fedor ; Melník, Milan ; Bernardinelli, Gérald ; Fromm, Katharina M.

In: Journal of Chemical Crystallography, 2006, vol. 36, no. 9, p. 571-580

Based on the bond-valence sum model the continual transition between the bidentate and monodentate bonding mode of carboxylato group and minimum of Cu–O bond lengths were estimated. The dependence of Cu⋯Cu separation on Cu–N bond length in binuclear Cu(II) carboxylates with caffeine were derived and fitted to the observed data. The crystal structure of...

2 results 1