N-Benzyloxycarboxamides and Their Zirconium Complexes: Synthesis, Structures, and Thermal Properties

N-Benzyloxycarboxamides and Their Zirconium Complexes: Synthesis, Structures, and Thermal Properties Full article

Journal

Russian Journal of Coordination Chemistry
ISSN: 1070-3284 , E-ISSN: 1608-3318

Output data

Year: 2025, Volume: 51, Number: 10, Pages: 936-946 Pages count : 11 DOI: 10.1134/s1070328425601049

Tags

N-alkoxycarboxamide, zirconium, precursor, XRD, tautomerism of amides, phase transformations, differential scanning calorimetry

Authors

Vikulova E.S. ¹ , Cheremnykh K.P. ^2,3 , Sukhikh A.S. ¹ , Ilyin I.Yu. ¹ , Vinogradova A.A. ¹ , Pishchur D.P. ¹ , Morozova N.B. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
2	Vorozhtsov Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
3	Novosibirsk State Pedagogical University, 630126, Novosibirsk, Russia

N-Benzyloxycarboxamides (HL) and corresponding zirconium(IV) complexes [Zr(L)4] (L = R'C(O)NOR, R = CH2–C6H5; R' = CH3 for L = baa or R' = C6H5 for L = bba) are synthesized and characterized to reveal the influence of the aromatic substituent on the structures and thermal properties. The structures of Hbba, [Zr(baa)4], and [Zr(bba)4] (CIF files CCDC nos. 2 474 365, 2 474 366, and 2 474 367, respectively) are determined by single-crystal X-ray diffraction (SC-XRD) and compared with those of N‑methoxybenzamide analogues Hmba and [Zr(mba)4] (R = CH3, R' = C6H5). The compounds are also studied by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The thermodynamic parameters for melting of Hbba and [Zr(baa)4] have been determined for the first time. In the [Zr(L)4] complexes, the introduction of the benzyl group into L results in the disappearance of the low-temperature structural transitions (L = mba) and a decrease in the melting points (L = baa, bba). The melting points of N‑alkoxybenzamides increase in the order L = mba < bba. Under the TGA conditions at comparable molecular weights, the [Zr(mba)4] complex partially evaporates, whereas [Zr(baa)4] decomposes.

Vikulova E.S. , Cheremnykh K.P. , Sukhikh A.S. , Ilyin I.Y. , Vinogradova A.A. , Pishchur D.P. , Morozova N.B.
N-Benzyloxycarboxamides and Their Zirconium Complexes: Synthesis, Structures, and Thermal Properties
Russian Journal of Coordination Chemistry. 2025. V.51. N10. P.936-946. DOI: 10.1134/s1070328425601049 WOS Scopus

Submitted:	Jul 28, 2025
Accepted:	Nov 14, 2025
Published print:	Jan 18, 2026
Published online:	Jan 18, 2026

Web of science:	WOS:001664146100007
Scopus:	2-s2.0-105027729687

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