Dimerization of the Trinuclear Mercury(II) Complex [(o-C₆F₄Hg)₃·μ₃-acetone] via Mercurophilic Interactions

Abstract

In the crystalline state, the trinuclear mercury(II) complex [(o-C(6)F(4)Hg)(3)*mu(3)-acetone] forms cofacial dimers which are held by two mercurophilic interactions of 3.51 A. In this form, the complex displays an intense photoluminescence with a sharp emission centered at 480 nm.

Crystal structure of {2,6-bis[(dimethylamino)methyl]phenyl-κ3N,C1,N′}(bromido/chlorido)mercury(II)

“…These intermolecular interactions are longer than the HgÁ Á ÁHg distances reported for metallic mercury (3 Å ) (Donohue, 1974). They are close to the intramolecular HgÁ Á ÁHg distances observed previously (Hg1Á Á ÁHg2 = 3.572 Å ; King et al, 2002) and also exceed the mercurophilic distances calculated for the (HgMe 2 ) 2 dimer at 3.41 Å (Pyykkö & Straka, 2000). This is in contrast to a related structure, L 2 Hg 2 Br 2 {L = 4-tert-butyl-2-[(dimethylamino)-methyl]-6-[(dimethylamino)methyl]benzene}, which is a dimer linked by Hg 2 Br 2 units, with one dimethylamino arm of each ligand coordinated to an Hg atom, and where there are no HgÁ Á ÁHg interactions present (Das et al, 2015).…”

Coordination chemistry of mercury-containing anticrowns. Self-assembly of unusual supramolecular aggregates in the interaction of the three-mercury anticrown (o-C6F4Hg)3 with crown ethers in the presence of neutral monodentate oxygenous Lewis bases

“…2.87 Å) in the above-mentioned acetone adduct 7, also having a pyramidal structure. 20 The C13-O3 and C13A-O3A bond vectors in 6 deviate from the normal to the mean planes of the central The mutual orientation of the mercury macrocycles in 5 and 6 is close to a staggered conformation and the projections of their centroids onto the plane parallel to these cycles are shifted relative to each other by 1.56 and 1.32 Å, respectively. The C-Hg-C bond angles in 3-6, as in free 1, are close to 180°.…”

Discrete and Extended Supersandwich Structures Based on Weak Interactions between Phosphorus and Mercury

“…In the crystal, these supersandwich units form slanted stacks which are shown in Figure 3 b. The shortest observed intermolecular Hg···Hg distance for 6 is 3.5742(4) , which is slightly longer than 3.512 found for 1·acetone [10] or 3.564 found for pure 1 [11] but significantly exceeds 3.3996 that is found for the double sandwich structure of 1 with [Cp 2 Ni] [7] and also 3.41 that was calculated for the dimer [HgMe 2 ] 2 [12] in the solid state. Figure 4 shows a section of the crystal structure of 5 a as an example to explain the assembly of the compounds 5 and 6.…”