Expression of concern: Valence tautomeric interconversion of bis-dioxolene cobalt complex with imino-pyridine functionalized by TEMPO moiety in solid solutions with isostructural nickel analogue: phase transitions and monocrystal destruction.

Expression of concern for 'Valence tautomeric interconversion of bis-dioxolene cobalt complex with imino-pyridine functionalized by TEMPO moiety in solid solutions with isostructural nickel analogue: phase transitions and monocrystal destruction' by Michael P. Bubnov , , 2024, , 9151-9160, https://doi.org/10.

Hydro-coupling of isocyanates promoted by 1,2-bis(arylimino)acenaphthene aluminum hydrides.

The interaction of aluminum hydrides [(dpp-bian)AlH] (1) and [(Ar-bian)AlH(THF)] (2) (dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene; Ar-bian = 1,2-bis[(2,6-dibenzhydryl-4-methylphenyl)imino]acenaphthene) with isocyanates RNCO (R = Ph, Cy, 3,5-ClPh) proceeds insertion of two molecules of isocyanates into each Al-H bond with the formation of unique Al carboxamides [(Ar-bian)Al{OC(H)N(R)C(NR)O}] (Ar = dpp, R = Ph, 3; Ar = Ar, R = Ph, 4; Ar = Ar, R = Cy, 5; Ar = Ar, R = 3,5-ClCH, 6). In contrast, the reactions of 1 and 2 with an excess of -butylisocyanate afford formimidate derivatives [(Ar-bian)Al{OC(H)N(Bu)}] (Ar = dpp, 7; Ar = Ar, 8). The reactions of ,'-dicyclohexylcarbodiimide with 1 and 2 give [(dpp-bian)Al{(NCy)CH}] (9) and [(Ar-bian)Al(H){(NCy)CH}] (10), correspondingly.

Valence tautomeric interconversion of bis-dioxolene cobalt complex with imino-pyridine functionalized by TEMPO moiety in solid solutions with isostructural nickel analogue: phase transitions and monocrystal destruction.

Valence tautomeric complexes (VT) are promising systems for creating molecular devices. From this viewpoint, valence tautomeric complexes with a hysteresis loop on the magnetic curve are of special interest as potential memory elements. The hysteresis loop is a consequence of retarded structural rearrangements which investigation is an actual problem.

Gradual solid-state redox-isomerism in the lanthanide series.

Oxidation of [(Ar-bian)Yb(dme)] (1) (Ar-bian = 1,2-bis[(2,6-dibenzhydryl-4-methylphenyl)imino]acenaphthene; dme = 1,2-dimethoxyethane) by 0.5 equivalent of MeNC(S)S-S(S)CNMe in dme at ambient temperature affords a mixture of two products, [(Ar-bian)Yb{SC(S)NMe}(dme)] and [(Ar-bian)Yb{SC(S)NMe}(dme)], which represent two redox-isomers (2a and 2b, respectively). Their ratio in solution depends on the solvent as well as on the temperature.

Diversity of transformation of heteroallenes on acenaphthene-1,2-diimine aluminum oxide.

The reactions of oxide [(dpp-bian)Al(μ-O)Al(dpp-bian)] (1) (dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene) with phenyl- or cyclohexylisocyanates result in the formation of carbonimidate derivatives [(dpp-bian)Al(μ-O)(μ-RNCO)Al(dpp-bian)] (R = Ph, 2; Cy, 3). Addition of ,'-dicyclohexylcarbodiimide to compound 1 leads to the formation of ureate complex [(dpp-bian)Al(μ-O)(μ-(CyN)CO)Al(dpp-bian)] (4). The reactions of the oxide 1 with pinacolborane and catecholborane afford oxo-bridged hydride [{(dpp-bian)Al(H)}(μ-O){Al(OBpin)(dpp-bian)}] (5) and compound [{(dpp-bian)Al(OBCat)}(μ-O)] (7), respectively.