Structural diversity of nickel and manganese chloride complexes with pyridin-2-one

Petriček, Saša (avtor)

Reactions of NiCl$_2$·6H$_2$O and pyridin-2-one (C$_5$H$_5$NO = Hhp) afforded novel molecular complexes, i.e., mononuclear [NiCl$_2$(Hhp)$_4$] (1), dinuclear [NiCl$_2$(Hhp)(H$_2$O)$_2$]$_2$·2Hhp (3) and [Ni$_2$Cl$_4$(Hhp)$_5$]·2MeCN (4), and an ionic complex [Ni(Hhp)$_6$]Cl$_2$ (2). Single-crystal X-ray analyses revealed two modes of Hhp ligation in these complexes: a monodentate coordination of carbonyl oxygen in all of them and an additional µ$_2$-oxygen bridging coordination in the dinuclear complex 4. Three bridging molecules of Hhp span two nickel(II) ions in 4 with a 2.9802 (5) Å separation of the metal ions. Complex 3 is a chlorido-bridged nickel dimer with a planar Ni$_2$(µ-Cl)$_2$ framework. Hydrogen bonds and parallel stacking arrangements of the Hhp molecules govern the connectivity patterns in the crystals, resulting in 1D structures in 1 and 5 or 2D in 3. A single manganese compound [MnCl$_2$(Hhp)$_4$] (5), isostructural to 1, was isolated under the similar conditions. This is in contrast to four nickel(II) chloride complexes with Hhp. Thermal analyses proved the stability of complexes 1 and 3 in argon up to 145 °C and 100 °C, respectively. The decomposition of 1 and 3 yielded nickel in argon and nickel(II) oxide in air at 800 °C.

• Jezik: Angleški jezik
• Ključne besede: Ni(II) complexes, Mn(II) complexes, pyridin-2-one, O-bridging ligand, crystal structure, thermal stability
• 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: 2020
• Št. strani: 23 str.
• Številčenje: Vol. 25, iss. 4, art. 846
• PID: 20.500.12556/RUL-133221
• UDK: 546.712:546.742:547.821
• ISSN pri članku: 1420-3049
• DOI: 10.3390/molecules25040846
• COBISS.SI-ID: 1538537155
• Datum objave v RUL: 17.11.2021

Gradivo je del revije

• Naslov: Molecules
• Skrajšan naslov: Molecules
• Založnik: MDPI
• ISSN: 1420-3049
• COBISS.SI-ID: 18462981

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 14.02.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: kompleksi Ni(II), kompleksi Mn(II), piridin-2-on, O-mostovni ligandi, kristalna struktura, termična obstojnost

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P1-0230
• Naslov: Organska kemija: sinteza, struktura in aplikacija

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P1-0175
• Naslov: Napredna anorganska kemija