20.500.12556/RUL-133221 Structural diversity of nickel and manganese chloride complexes with pyridin-2-one 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. Ni(II) complexes Mn(II) complexes pyridin-2-one O-bridging ligand crystal structure thermal stability kompleksi Ni(II) kompleksi Mn(II) piridin-2-on O-mostovni ligandi kristalna struktura termična obstojnost true false true Angleški jezik Slovenski jezik Članek v reviji 2021-11-17 14:07:16 2021-11-17 14:07:18 2022-09-12 04:15:24 0000-00-00 00:00:00 2020 0 0 23 str. iss. 4, art. 846 Vol. 25 Feb. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 546.712:546.742:547.821 1420-3049 10.3390/molecules25040846 1538537155 RAZ_Petricek_Sasa_2020.pdf RAZ_Petricek_Sasa_2020.pdf 1 0E5715189CA49C88D219EF03B1FA11A1 f9831ef3f2e009f00667e7898bad8717933d414c0979019fc691f3859f372e4d 7360f3a0-47a7-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=151113 https://www.mdpi.com/1420-3049/25/4/846 0 3940545b-47a7-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=151112 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0