Strong antiferromagnetism in the dinuclear 2-pyridone complex with N–C–O bridges: A paddle-wheel analogue of the dinuclear tetracarboxylates

Kozlevčar, Bojan; Radišek, Marjeta; Jagličić, Zvonko; Merzel, Franci; Glažar, Lea; Golobič, Amalija; Šegedin, Primož

doi:10.1016/j.poly.2007.08.019

Cited by 19 publications

(11 citation statements)

References 35 publications

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“…The Ni-Cl-Ni angle in 3 is in accord with these data. The plane of coordinated Hhp and the (Ni 2 (µ-Cl) 2 plane in 3 form an angle of 41.22 (7) • . However, the planes of aromatic ligands and the Ni 2 (µ-Cl) 2 framework are either nearly coplanar and/or perpendicular in the majority of dinuclear nickel(II) chloride complexes with this type of framework [70][71][72]74].…”

Section: Crystal Structure Of 3 [Nicl2(hhp)(h2o)2]2 2hhpmentioning

confidence: 99%

“…The chelate coordination of hp − is accomplished in a mononuclear nickel complex with a N 3 -macrocycle [28]. Interestingly, the 1,3-bridging coordination of hp − or its derivatives has not been adopted by manganese or nickel complexes, although complexes of some other 3d metals-copper or chromium-include this type of bonding (2)(3)(4)7).In contrast to hp − anions-stabilizing high-nuclearity metal cages-are the Hph, Hchp, or Hmhp complexes, mostly mono-or di-nuclear species, if no additional bridging ligands are included. The first Hhp complexes with metal(II) (Mn, Co, Ni, Cu, Zn and Cd) perchlorates, tetrafluoroborates and nitrates were characterized by means of spectroscopy, elemental analyses, magnetic measurements and X-ray powder-diffraction analyses in the early 1970s [29,30].…”

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Structural Diversity of Nickel and Manganese Chloride Complexes with Pyridin-2-One

Petriček

2020

Molecules

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Reactions of NiCl2·6H2O and pyridin-2-one (C5H5NO = Hhp) afforded novel molecular complexes, i.e., mononuclear [NiCl2(Hhp)4] (1), dinuclear [NiCl2(Hhp)(H2O)2]2.2Hhp (3) and [Ni2Cl4(Hhp)5]·2MeCN (4), and an ionic complex [Ni(Hhp)6]Cl2 (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 µ2-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 Ni2(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 [MnCl2(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.

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Section: Crystal Structure Of 3 [Nicl2(hhp)(h2o)2]2 2hhpmentioning

confidence: 99%

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Structural Diversity of Nickel and Manganese Chloride Complexes with Pyridin-2-One

Petriček

2020

Molecules

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“…3,4 Crystal structures with substituted pyridines are more frequent, e.g. with 2-methylpyridine, 5,6 3-methylpyridine, 6,7 4-methylpyridine, 6 2,6-dimethylpyridine, 8 3-hydroxypyridine, 9 4-aminopyridine, 10 etc.…”

Section: Introductionmentioning

confidence: 99%

Copper(II) Coordination Compounds with Methanoato and Pyridine Ligands: Conversion from Mononuclear to Polynuclear in the Presence of Moisture

Golobič¹,

Marušič²,

Šegedin³

et al. 2019

ACSi

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Blue prismatic crystals of mononuclear [Cu II (O 2 CH) 2 (Py) 3 ] (Py = pyridine, C 5 H 5 N), 1, were prepared from reaction solution containing dry pyridine and dinuclear [Cu 2 II (O 2 CH) 4 (Py) 2 ]. When a portion of solution together with crystals was exposed to air moisture, crystals of 1 dissolved in mother liquid. Simultaneously, blue needles of 2, i.e. covalently linked one-dimensional chain structure with formula [Cu(O 2 CH) 2 (Py) 2 ] n • nH 2 O, grew out of the solution. The process lasted few minutes and was observed under optical microscope. The conversion from 1 to 2 takes place also outside of solution in the solid state. Single crystal X-ray diffraction data were collected at 150 K for 1 and after that for 2, originating from the same reaction solution. This paper reports the structures of both compounds. Alternative synthesis method of 2 arising from a mixture of copper methanoate and pyridine is also reported.

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“…The tautomeric equilibrium between lactam (2-pyridone) and lactim (2-hydroxypyridine) forms enables different coordination of this ligand via a nitrogen and/or oxygen donor atom [14][15][16]. The observed metal complexes with 2-pyridone [14,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] show predominantly the lactam form in the solid state and in solution [16,34], but examples with the lactim form are also known for Pt, Ir, and Ru [35][36][37][38][39][40]. Different coordination modes of 2-pyridone and 3-hydroxypyridine can also have a distinctive influence on molecular arrangements in the solid state as a result of different non-covalent intermolecular interactions, because the 2-pyridone ligand can act as a hydrogen bond donor and acceptor, whereas 3-hydroxypyridine can act only as a hydrogen bond donor (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Different coordination modes and supramolecular aggregations in copper(II) pentane-2,4-dionato compounds with 2-pyridone and 3-hydroxypyridine

Perdih

2012

Monatsh Chem

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Copper(II) bis(pentane-2,4-dionato-j 2 O,O 0 ) compounds with 2-pyridone (1) and 3-hydroxypyridine (2) were prepared by the reaction of bis(pentane-2,4-dionato-j 2 O,O 0 ) copper(II) with selected ligands. The coordination of Cu(II) in both compounds is square pyramidal with the fifth coordination site occupied by the carbonyl oxygen atom of the 2-pyridone ligand in 1 and by the nitrogen atom of 3-hydroxypyridine in 2. The X-ray crystallographic studies revealed different crystal aggregation influenced by the ability of the 2-pyridone ligand to act as a hydrogen bond donor and acceptor, and 3-hydroxypyridine acting only as a hydrogen bond donor. Intermolecular N-HÁÁÁO hydrogen bonding forms dimers in 1 and infinite chains in 2. Three-dimensional aggregation is achieved by p-p interactions and C-HÁÁÁp (arene) hydrogen bonding.

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Strong antiferromagnetism in the dinuclear 2-pyridone complex with N–C–O bridges: A paddle-wheel analogue of the dinuclear tetracarboxylates

Cited by 19 publications

References 35 publications

Structural Diversity of Nickel and Manganese Chloride Complexes with Pyridin-2-One

Structural Diversity of Nickel and Manganese Chloride Complexes with Pyridin-2-One

Copper(II) Coordination Compounds with Methanoato and Pyridine Ligands: Conversion from Mononuclear to Polynuclear in the Presence of Moisture

Different coordination modes and supramolecular aggregations in copper(II) pentane-2,4-dionato compounds with 2-pyridone and 3-hydroxypyridine

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