Journal of Siberian Federal University. Chemistry / Theoretical View on the Nature of Metal-Ligand Interactions in POCOP Pincer Ni(II) Complexes with Alkynyl and Vinylidene Ligands

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2024 17 (4)
Authors
Kormes, Elizaveta S.; Shor, Aleksey M.; Rubaylo, Anatoliy I.; Ivanova- Shor, Elena A.
Contact information
Kormes, Elizaveta S.: Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center of the SB RAS” Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation; ; Shor, Aleksey M.: Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center of the SB RAS” Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation; ; Rubaylo, Anatoliy I.: Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center of the SB RAS” Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation; ; Ivanova- Shor, Elena A.: Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Scientific Center of the SB RAS” Krasnoyarsk, Russian Federation; Siberian Federal University Krasnoyarsk, Russian Federation;
Keywords
NBO; nickel; pincer complexes; metal – ligand interaction; natural bond orbitals; NBO; electronic structure
Abstract

Методом естественных связующих орбиталей изучено электронное строение комплекса Ni(II) с пинцерным и алкинильным лигандами [C6H3–1,3-(OPPh2)2]Ni-C≡C-(4-C6H3N2S) (1) и его протонированной формы [[C6H3–1,3-(OPPh2)2]Ni=C=CH-(4-C6H3N2S)]+ (2). Комплекс 2 образуется в результате присоединения протона к Сβ углероду тройной -С≡С- связи алкинильного лиганда. В комплексе 1 доминирующим процессом является донирование электронной плотности с лигандов на Ni2+. В комплексе 2 перераспределение электронной плотности описывается тремя процессами: лиганд–металл донирование, обратное донирование с Ni2+ на винилиденовый лиганд и межлигандное взаимодействие

Natural bond orbitals (NBO) method was used to study electronic structure of the Ni(II) complexes with pincer and alkynyl ligands [C 6H3-1,3-(OPPh2)2]Ni- C≡C-(4-C6H3N2S) (1) and its protonated form [[C6H3-1,3-(OPPh2)2]Ni=C=CH-(4-C6H3N2S)]+ (2). The Complex 2 is formed as a result of proton attaching to Сβ carbon of the -С≡С- bond of alkynyl ligand. The electron donation from ligands to Ni2+ is dominate process in the complex 1. In the complex 2, electron transfer is described by three processes: ligands – metal donation, Ni2+ to vinylidene ligand back donation and interligand interaction

Pages
596–606
EDN
XDSPTC
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/154327