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Structural diversity and magnetic properties of copper(II) quinaldinate compounds with amino alcohols
ID Podjed, Nina (Avtor), ID Modec, Barbara (Avtor), ID Clérac, Rodolphe (Avtor), ID Rouzières, Mathieu (Avtor), ID Alcaide, María M. (Avtor), ID López-Serrano, Joaquín (Avtor)

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Izvleček
The reactions between [Cu(quin)$_2$(H$_2$O)] (quin$^–$ = the anionic form of quinoline-2-carboxylic acid) and a series of aliphatic amino alcohols have yielded structurally very diverse copper(II) complexes, labelled a–g. Single-crystal X-ray structure analysis has revealed either intact amino alcohol molecules or amino alcoholate ions serving as ligands. In type a complexes, the amino alcohols are bound in a monodentate manner via NH$_2$. Engagement of both functional groups in coordination was observed for types b and e (a bidentate chelating mode) and type c (a bidentate bridging one) complexes. In view of the strong bidentate chelating coordination of quinaldinate in [Cu(quin)$_2$(H$_2$O)], the formation of homoleptic amino alcohol complexes e was not anticipated. Equally surprising was the transformation of a mononuclear starting material into a one-dimensional (1D) coordination polymer, [Cu(quin)$_2$]$_n$ (g). Spontaneous deprotonation of some amino alcohols and coordination of, thus formed, amino alcoholates via both donors also took place. Dinuclear complexes (d) contained two bridging amino alcoholates, whilst bidentate chelating mode was observed for type f. Interestingly, the dinuclear complex exists as two isomers which differ in the position of quinaldinates with respect to the Cu(μ-OR)$_2$Cu core. DFT calculations on isolated syn- and anti-[Cu$_2$(quin)$_2$(3a1pO)$_2$] (3a1pO$^–$ = anion of 3-amino-1-propanol) have shown the syn isomer to be more stable. The explanation lies in the intramolecular π⋯π stacking of quinaldinates, possible only in this isomer. Magnetic susceptibility measurements revealed antiferromagnetic interactions between S = 1/2 copper(II) spins in all the studied compounds except in [Cu(quin)$_2$]$_n$ (g) for which weak ferromagnetic couplings are detected.

Jezik:Angleški jezik
Ključne besede:copper(II) complexes, quinaldinate, amino alcohols, crystal structure, magnetic properties, DFT calculations
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2022
Št. strani:Str. 6899-6920
Številčenje:Vol. 46, iss. 15
PID:20.500.12556/RUL-141874 Povezava se odpre v novem oknu
UDK:546.562
ISSN pri članku:1369-9261
DOI:10.1039/D2NJ00296E Povezava se odpre v novem oknu
COBISS.SI-ID:104885763 Povezava se odpre v novem oknu
Datum objave v RUL:10.10.2022
Število ogledov:1043
Število prenosov:66
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Gradivo je del revije

Naslov:New journal of chemistry
Skrajšan naslov:New j. chem.
Založnik:Royal Society of Chemistry
ISSN:1369-9261
COBISS.SI-ID:22573573 Povezava se odpre v novem oknu

Licence

Licenca:CC BY-NC 3.0, Creative Commons Priznanje avtorstva-Nekomercialno 3.0 Nedoločena
Povezava:https://creativecommons.org/licenses/by-nc/3.0/deed.sl
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Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:bakrovi(II) kompleksi, kinaldinat, amino alkoholi, kristalne strukture, magnetne lastnosti, DFT izračuni

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Program financ.:Young researchers

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P1-0134
Naslov:Kemija za trajnostni razvoj

Financer:Drugi - Drug financer ali več financerjev
Program financ.:MICINN
Številka projekta:PID2019-110856GA-I00

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Program financ.:CNRS

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Program financ.:University of Bordeaux

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Program financ.:Région Nouvelle Aquitaine

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Program financ.:Quantum Matter Bordeaux

Financer:Drugi - Drug financer ali več financerjev
Program financ.:MICINN, Research fellowship

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