Osme bond: anisotropic distribution of electron density in action

Wolfium bonds in homodimers of MX4Y (M = Mo, W; X = F, Cl, Br; Y = O, S, Se)

“…35 Moving over another group, osme bonds comprising OsÁ Á ÁCl interactions lay in the range between À3.3 and À13.8 kcal mol À1 . 38 Mono OsÁ Á ÁN/O contacts were observed in OsO 4 adducts with 4,4 0bipyridine and [4,4 0 -bipyridine]1,1 0 -dioxide in a recent work by Pizzi et al 39 The complexes stabilized by OsÁ Á ÁO osme bonds mimic the Mono-Y homodimers presented here. The authors of mentioned work found evidence that these osme interactions contain all the features typical of a s-hole interaction, including a positive s-hole at the metal atom.…”

“…A diverse group of the transition metals can play a very similar role. Such bonding interactions have acquired tentative names such as regium (group 11), [25][26][27][28][29] spodium (group 12), [30][31][32][33][34] matere (group 7) [35][36][37] and osme (group 8) [38][39][40] bonds. As an example, the regium bond has been documented in the metal-DNA complexes, involving Cu(II), Ag(I), Au(I) and Au(III).…”

Expanding the toolbox of the coinage bond: adducts involving new gold(iii) derivatives and bioactive molecules

“…Recently the same behaviour has been recognized in various elements of the d block. The osme 9 and matere 10 bonds, the interactions wherein the elements of groups 8 and 7 are the electrophiles, are the last entries in this set of interactions. The electrophilic behaviour of the derivatives of group 11 elements was recognized first as a consequence of the anisotropic distribution of the electron density in Cu, Ag, and Au metal nanoparticles.…”