Aryldiazenato-complexes : synthesis and structure of complexes derived from the oxidative addition of diazonium ions to trans-carbonylchlorobis(triphenylphosphine)iridium(I)

Bonding analysis of transition metal NNR end-on complexes and comparison with isoelectronic NNR2 species

“…The corresponding range for complexes was found NNR 2 to lie between 1.47 and 1. 25 Clearly, as mentioned above, A .3 NNR complexes exhibit a greater degree of NÈN multiple bonding character than species. In most of the listed NNR 2 compounds, the angle is close to 180¡.…”

Binuclear Iron and Ruthenium Complexes with Bis(diazene) or Bis(diazenido) Bridging Ligands: Synthesis, Characterization, X-ray Crystal Structure, and Electrochemical Studies

“…All the structures containing a chemical fragment consisting of a six-coordinated transition metal bound to a NN moiety and two chemically equivalent trans P atoms were retrieved . The compounds containing, besides the fragment under examination, other analogous groups which could bias the analysis and an evident outlier were discarded. For each of the 13 remaining fragments, the difference between the two metal−phosphorus bonds, divided by the bond average, was plotted versus the torsion angle P−M−N−N involving the longer bond.…”

Organometallic intramolecular-coordination compounds containing a nitrogen donor ligand

“…The azobenzene chloro-bridged complexes 199 were treated with carbon monoxide at a low pressure and room temperature, and 2-phenyl-1H-indazolone (203) was formed in a low yield.170 However, a much better yield was obtained at a high temperature and pressure.172 It is known that 203 can be carbonylated further to give substituted quinazoline 204 by the catalytic action of cobalt carbonyl.173•174 The hydrolysis of the quinazolinedione affords aniline and anthranilic acid derivatives. The 2-phenyl-1H-indazoline also has been obtained directly by the reac-tion174•175 of azobenzene with carbon monoxide in the presence of Co2(CO)8 (Scheme VII).…”