Bis(acetato-κO)tetrakis(1H-pyrazole-κN1)nickel(II)

Papánková, Blaz ̆ena; Svoboda, Ingrid; Fueß, H.; ̆intálová, Katka S

doi:10.1107/s1600536805029193

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…With respect to the overall structures, this variation appears to be very subtle; it does not affect either the composition of the compounds or the topology of the coordination and hydrogen bonding. Isomerism of the hydrogenbonding patterns adopted by pyrazole and carboxylate coligands is also known for simpler molecular species, such as [Ni(AcO) 2 (Hpz) 4 ] (Hpz is pyrazole; Papá nková et al, 2005) and [Ni(AcO) 2 (Hpz) 4 ]ÁH 2 O (Dö ring et al, 1994).…”

Section: Commentmentioning

confidence: 99%

Cobalt(II) and cadmium(II) square grids supported with 4,4′-bipyrazole and accommodating 3-carboxyadamantane-1-carboxylate

et al. 2013

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In poly[[bis(μ-4,4'-bi-1H-pyrazole-κ(2)N(2):N(2'))bis(3-carboxyadamantane-1-carboxylato-κO(1))cobalt(II)] dihydrate], {[Co(C12H15O4)2(C6H6N4)2]·2H2O}n, (I), the Co(2+) cation lies on an inversion centre and the 4,4'-bipyrazole (4,4'-bpz) ligands are also situated across centres of inversion. In its non-isomorphous cadmium analogue, {[Cd(C12H15O4)2(C6H6N4)2]·2H2O}n, (II), the Cd(2+) cation lies on a twofold axis. In both compounds, the metal cations adopt an octahedral coordination, with four pyrazole N atoms in the equatorial plane [Co-N = 2.156 (2) and 2.162 (2) Å; Cd-N = 2.298 (2) and 2.321 (2) Å] and two axial carboxylate O atoms [Co-O = 2.1547 (18) Å and Cd-O = 2.347 (2) Å]. In both structures, interligand hydrogen bonding [N...O = 2.682 (3)-2.819 (3) Å] is essential for stabilization of the MN4O2 environment with its unusually high (for bulky adamantanecarboxylates) number of coordinated N-donor co-ligands. The compounds adopt two-dimensional coordination connectivities and exist as square-grid [M(4,4'-bpz)2]n networks accommodating monodentate carboxylate ligands. The interlayer linkage is provided by hydrogen bonds from the carboxylic acid groups via the solvent water molecules [O...O = 2.565 (3) and 2.616 (3) Å] to the carboxylate groups in the next layer [O...O = 2.717 (3)-2.841 (3) Å], thereby extending the structures in the third dimension.

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Section: Commentmentioning

confidence: 99%

Cobalt(II) and cadmium(II) square grids supported with 4,4′-bipyrazole and accommodating 3-carboxyadamantane-1-carboxylate

et al. 2013

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“…Our interest is an investigation of interesting coordinating properties of Co(II) and Ni(II) with N -donor base and carboxylate ligand. The heteroleptic complexes with the {MeN 2 O 2 O 2´} [2,3], {MeN 4 O 2 } [4,5],{MeN 6 } [6] chromophore, where M = Ni and Co have been prepared, structurally characterized and subjected to magnetochemical investigation down to 2 K (susceptibility and magnetization measurement). They show magnetic behavior typical for zero-field splitting (ZFS) systems.…”

Section: Abstract: Metal Complexes-1 Magnetism-2 Zfs -3mentioning

confidence: 99%

Crystal structure and magnetic properties of mononuclear Co(II) and Ni(II) complexes

Papánková¹,

Svoboda²,

Boča³

et al. 2007

Acta Cryst Sect A

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, 27.320(5), 15.120(3), 90.0, 105.23(3) and 90.0. Slightly distorted coordination spheres are tetrahedral in four-coordinated compounds (I) and (II) and octahedral in six-coordinated compounds (III) and (IV). Bond distances (Å) within the coordination spheres for CoO vary from 1.927(3) to 1.947(3) in (I), from 1.889(3) to 1.906(3) in (II), 1.897(2) in (III) and from 1.878(2) to 1.901(2) in (IV) and for CoN from 1.940(4) to 2.019(4) in (I), from 1.982(4) to 1.984(4) in (II), from 1.962(2) to 1.994(2) in (III) and from 1.947(2) to 1.963(2) in (IV). The values are comparable to those found in some similar compounds [1-3]. Salicylaldimines can be prepared from salicylaldehyde and respective aliphatic or aromatic amines heating overnight.

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Section: Ms16 P06mentioning

confidence: 99%

Substituted salicylaldiminato and related cobalt complexes at 173 K

Kansikas¹,

Shibaud²,

Repo³

et al. 2007

Acta Cryst Sect A

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The preparation, X-ray crystal structure, optical and magnetic properties of two Organic-Donor Inorganic-Accepter (ODIA) salts: [(TTF) 6 (XMO 12 O 40)(Et 4 N)], X= Si (1) and P(2) are presented. The two materials are isostructural. Their X-ray crystal structures are characterized by 1-D TTF chains lying inside the channels formed by the inorganic anions and isolated TTF molecules. Magnetic experiments for both salts are compared: they are different and suggest, in particular, the presence of one non-interacting electron in 2, in contrast with the diamagnetic behaviour of 1. The optical absorption measurements of the two compounds are essentially identical. They show the presence of both intense charge transfer bands around 4800 cm-1 and vibronic modes in the middle IR range (1300-1400 cm 1), characteristic of mixed valence salts. MS16 P07 Crystal structure and magnetic properties of mononuclear Co(II) and Ni(II) complexes B. Papánková a , I.

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Bis(acetato-κO)tetrakis(1H-pyrazole-κN¹)nickel(II)

Cited by 7 publications

References 5 publications

Cobalt(II) and cadmium(II) square grids supported with 4,4′-bipyrazole and accommodating 3-carboxyadamantane-1-carboxylate

Cobalt(II) and cadmium(II) square grids supported with 4,4′-bipyrazole and accommodating 3-carboxyadamantane-1-carboxylate

Crystal structure and magnetic properties of mononuclear Co(II) and Ni(II) complexes

Substituted salicylaldiminato and related cobalt complexes at 173 K

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