Recent progress in the chemistry of osmium carbyne and metallabenzyne complexes

Nucleophilic Aromatic Addition Reactions of the Metallabenzenes and Metallapyridinium: Attacking Aromatic Metallacycles with Bis(diphenylphosphino)methane to Form Metallacyclohexadienes and Cyclic η2‐Allene‐Coordinated Complexes

“…[1][2][3][4] Particularly, significant progress of the chemistry of metallabenzenes has been made. [2,4] Previous studies have led to the isolation and characterization of a remarkable number of stable metallabenzenes.…”

Synthesis, characterization and photophysical properties of quinolin-8-olato chelated osmium(II) organometallics bearing a pendant imine-phenol motif and electrogeneration of trivalent analogue

“…The chemistry of osmium has been receiving considerable attention largely because of the variety of reactivities and due to the fascinating electron transfer properties exhibited by complexes of this metal [1][2][3][4][5][6][7][8][9]. Variation of the coordination environment around osmium plays a key role in modulating the redox properties of its complexes.…”

Understanding the Structure, Substituent Effect, Natural Bond Analysis and Aromaticity of Osmabenzyne: A DFT Study

“…Metallabenzynes, [1][2][3][4][5][6] which are organometallic compounds derived from formal replacement of a carbon atom or a C-H group in benzyne with an isolobal transition metal fragment, are closely related to metallabenzenes. At initial view, one might expect that metallabenzynes may be too unstable to be isolated, because organic compounds with a C≡C bond in the six-membered ring, for example, benzyne and cyclohexyne, are thermally highly unstable because of ring strain.…”

“…The electrostatic first hyperpolarizability (β tot ) and dipole moment (µ) of para-substituted XC 5 H 4 Os(PH 3 ) 2 Cl complexes have been calculated. From Table 6, it is found that when X=NO 2 show larger µβ values, which is attributed to the positive contribution of their conjugation.…”

“…It can be seen, the more dipole moments for electron donor substituents. 2 optimized MPW1PW91 method and the same basis sets used for studied osmabenzynes. The Os-C5 bond length is slightly shorter than that for calculated Os-C single bond (2.149 Å), and longer than that for calculated Os-C double bond (1.870 Å).…”