Synthesis and reactivity of tin amide complexes

Recent Advances in the Chemistry of Metal Carbamates

“…The scenario changed over the last 15 years, as several carbamato complexes obtained by this methodology were reported, and especially organometallic species. These include late d-block metals such as iridium [190,191], nickel [192][193][194][195][196][197], palladium [198,199], gold [200] and zinc [201][202][203][204], f-block metals cerium [134] and uranium [205][206][207][208][209] and p-block metals tin [210] and gallium [211,212]. Furthermore, in situ-formed amide complex of Zn(II) and alkyl-amide of Mg(II) were mixed under carbon dioxide atmosphere to afford a heterobimetallic Zn/Mg alkyl-carbamato derivative [213].…”

“…However, it has to be considered that the number and the position of the 13 C-NMR resonances in solution systems might not be discriminating where multiple coordination modes are adopted. Indeed, quite often only an average value is observed at ambient temperatures, due the rapid exchange between carbamato ligands in solution [210]. In such cases, 13 C-NMR measurements at low temperatures provide distinct chemical shifts for the carbamates in the different coordination fashions [138,284].…”

Bi−P Bond Homolysis as a Route to Reduced Bismuth Compounds and Reversible Activation of P4

“…In 5,t he bismuth atom lies "above" the leastsquares plane defined by the silicon and nitrogen atoms by 0.97 ,whereas it lies "below" this plane in 6 by 0.83 .These conformers are designated 5(exo)a nd 6(endo), respectively, based on the definition of Fulton et al for pyramidally coordinated metal centers in b-diketiminate compounds ( Figure S11). [19] To avoid the use of chlorinated intermediates,t he activation of white phosphorus (P 4 )i so fc ontinued interest as an entry into organophosphorus compounds. [20] This reactivity has been observed for af ew p-block elements, [21] including group-13 (Al, Ga, In, Tl) and -14 (Sn) metals that form MÀPbonds when reacted with P 4 under mild conditions.…”

Reactivity of β-Diketiminato Magnesium Alkyl Complexes: Heterocumulenes and Phosphanes

“…Similar conformations are observed in divalent group 14 b-diketiminate complexes, but one of the ligands has been replaced by a lone pair. [19][20][21] As one of these non-BDI ligands on magnesium is generally anionic and the other is neutral, a review of the Cambridge Structural Database reveals that the anionic ligand prefers to be exo and the neutral ligand prefers to be endo. Such is the case for the solvated methyl and benzyl complexes, [(BDI)MgMe(THF)] and [(BDI)MgBn(THF)].…”