Synthesis and characterization of (μ-oxalato)nickel(II) complexes

Březina, František; Smékal, Zdeněk; Trávnı́ček, Zdeněk; Šindelář, Zdeněk; Pastorek, Richard; Marek, Jaromı́r

doi:10.1016/s0277-5387(96)00404-4

Cited by 26 publications

(6 citation statements)

References 16 publications

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“…Selected bond distances, angles, and the intermolecular contacts involving hydrogen atoms are listed in Table 3. The structure consists of a neutral onedimensional layered network with the stoichiometry [Ni(L 2 ) Fe(CN) 5 The crystal structure data also show that the shortest through space Ni Ni distance is 9.396 Å for 2. This distance is too large to contribute to the magnetic interaction of sizable strength through dipolar magnetic interactions.…”

Section: Resultsmentioning

confidence: 99%

“…This distance is too large to contribute to the magnetic interaction of sizable strength through dipolar magnetic interactions. In such a case, the superexchange pathway through the diamagnetic [Fe(CN) 5 NO] 2− could take the leading role in contributing to the magnetic interaction. The through bridge Ni Ni distance is 9.940 Å, which is again quite [29].…”

Section: Resultsmentioning

confidence: 99%

“…Single crystals of complex 1 were grown from DMF-H 2 O mixture, while crystals of 2 which were suitable for X-ray diffraction study were obtained by slow diffusion of an ethanolic solution of Ni(L 2 )(ClO 4 ) 2 to an aqueous solution of Na 2 [Fe(CN) 5 NO]·2H 2 O. These crystals were then mounted on a Siemens P4 4-circle-diffractometer and an Enraf-Nonius CAD4 diffractometer, respectively, both of which were equipped with graphite monochromated Mo Kα radiation (λ = 0.71073 Å).…”

Section: Physical Measurementsmentioning

confidence: 99%

“…Using a 'building block' methodology based on a suitable combination of organic and inorganic spacers with metal ions, a wide variety of molecular architectures showing diverse properties can be generated. In this regard, studies related to the structure and properties involving NiN 4 chromophores, where N 4 are tetraazamacrocycles, linear tetramines, or two diamine molecules [4][5][6], have received considerable attention. It has been revealed that their properties are strongly dependent on the nature of the terminal aza ligand [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Molecular structure and atom-labeling view of [Ni(L 2 ) Fe(CN)5 NO]·C 2 H 5 OH (2) with 30% probability thermal ellipsoids. H atoms are omitted for clarity 1.928(4) and 1.924(4) Å, whereas the three remaining CN − groups are monodentate.…”

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confidence: 99%

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Synthesis, crystal, and molecular structure of coordination polymers constructed by self-assembly of NiN4 cores with 2,2′-iminodibenzoate and nitroprusside ions

et al. 2006

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Two coordination compounds of compositions [Ni(L 1 )(idba)(H 2 O)]·1.5 H 2 O (1) and [Ni(L 2 )Fe(CN) 5 NO]· C 2 H 5 OH (2) where L 1 is N, N -bis(3-aminopropyl)ethylenediamine, L 2 is 2, 12-dimethyl-3,7,11,17-tetraazabicyclo [11.3.1]heptadeca-1(17),2,11,13,15-pentaene, and idba 2− is 2,2 -iminodibenzoate have been synthesized and characterized by elemental analysis, IR spectroscopy, thermal analysis, and single-crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic space group P2 1 /n (No. 14) with a = 9.810(2) Å, b = 10.230(2) Å, c = 25.350(5) Å, V = 2543.6(9) Å 3 , Z = 4, and R = 0.0727. The nickel atom is six-coordinated by four N atoms of amine and two O atoms of water and idba 2− . The molecular packing of the complex comprises of an infinite one-dimensional layered network in which the molecules in the crystal are held together by a system of hydrogen bonding. Complex 2, however, crystallizes in the space group C2/c (No. 15) of the monoclinic system with a = 19.7990(4) Å, b = 14.9440(3) Å, c = 19.8800(3) Å, V = 5115.90(17) Å 3 , Z = 4, and R = 0.0540. The Ni ion in compound 2 has a slightly distorted octahedral arrangement of the N 4 donor atoms of primary ligand L 2 and two N-donor atoms of the secondary nitroprusside ligand. The structure of 2 displays an extended one-dimensional network formed by linear [ Ni NC Fe CN ] units. A cyclic voltammetric study shows that compound 1 undergoes a quasireversible oxidation attributable to Ni 2+ → Ni 3+ in the range 300-420 mV vs SCE.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Physical Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Synthesis, crystal, and molecular structure of coordination polymers constructed by self-assembly of NiN4 cores with 2,2′-iminodibenzoate and nitroprusside ions

et al. 2006

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One‐Dimensional Magnetism in New, Layered Structures: Piperazine‐Linked Copper and Nickel Oxalate Chains

et al. 2004

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Two new coordination network materials with the composition M(pip)(ox) ( pip = piperazine; ox = oxalate; M = Ni, Cu) have been synthesised under ambient and hydrothermal conditions. These compounds adopt related structures, both consisting of intersecting [M(pip)] ϱ and [M(ox)] ϱ chains, which result in layered structures. The nickel compound crystallises in P1 . The metal ions are octahedrally coordinated and are linked by symmetric chelating bridging oxalate ions. In contrast, the copper compound crystallises in the chiral space group P2 1 2 1 2 1 . Here the copper atom displays square pyramidal coordination geometry and the oxalate ions bridge metals in an unsymmetric fashion resulting in a polar metal-oxalate chain structure. The magnetic behaviour is determined by the nature of the exchange-coupled net-

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Magnetic Exchange Interactions in Dinuclear Copper(II) and Nickel(II) Complexes with μ‐Oxalato Bridges. The Structure of μ‐Oxalato(O, O′, O″, O‴)‐bis{[1, 8‐di(2‐pyridyl)‐3, 6‐dithiaoctane‐N, N′, S, S′]nickel(II)} Dinitrate Dihydrate

Castiñeiras

Domínguez

Gómez-Rodríguez

et al. 2003

Zeitschrift anorg allge chemie

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A copper(II) and two nickel(II) dinuclear oxalato-bridged compounds of formulae [{Cu(bpdto)} 2 (µ-ox)](ClO 4 ) 2 (1), [{Ni(bpdto)] 2 (µ-ox)](ClO 4 ) 2 (2), and [{Ni(bpdto)} 2 (µ-ox)](NO 3 ) 2 ·2H 2 O (3), where bpdto ϭ 1,8-bis(2-pyridyl)-3,6-dithiaoctane and ox ϭ oxalate ϭ C 2 O 4 2Ϫ anion, have been synthesized and characterized. The crystal structure of 3 was determined by single-crystal X-ray analysis. It is a dinuclear complex with i symmetry in which the oxalate ligand is coordinated in bis(didentate) fashion to the inversion centre-related nickel atoms. The distorted octahedral environment of each nickel atom is completed by two sulphur atoms in Magnetische Austausch-Wechselwirkungen in Kupfer(II)-und Nickel(II)-Zweikernkomplexen mit µOxalatobrücken. Die Struktur von µ-Oxalato(O,OЈ,OЉ, Oٞ)-bis{[1,8-di(2-pyridyl)-3,6-dithiaoctan-N,NЈ,S,SЈ]nickel(II)-dinitrat-dihydrat Inhaltsübersicht. Eine Kupfer(II)-und zwei Nickel(II)-Zweikernoxalatoverbrückte-Verbindungen [{Cu(bpdto)} 2 (µ-ox)](ClO 4 ) 2 (1), [{Ni(bpdto)] 2 (µ-ox)](ClO 4 ) 2 (2) und [{Ni(bpdto)} 2 (µ-ox)](NO 3 ) 2 ·2H 2 O (3) (bpdto ϭ 1,8-bis(2-pyridyl)-3,6-dithiaoctan und ox ϭ oxalat ϭ C 2 O 4 2Ϫ -Anion) wurden synthetisiert und charakterisiert. Die Kristallstruktur von 3 wurde durch eine Einkristall-Röntgenstrukturanalyse bestimmt. 3 ist ein Zweikernkomplex mit i-Symmetrie in dem die Oxalat-Liganden bis-zweizähnig an die Nickelatome koor-* Prof. Dr. A. Castiñ eiras the equatorial plane and by two pyridyl nitrogen atoms in axial positions. Magnetic susceptibility measurements over the range 5 Ϫ 299K, show antiferromagnetic interactions that are weak in 1 (J ϭ Ϫ12.8 cm Ϫ1 ) and strong in 2 and 3 (J ϭ Ϫ37.8 and Ϫ40.9 cm Ϫ1 , respectively), which in the case of 3 is in keeping with the observed structural parameters. . diniert sind. Die verzerrt-oktaedrische Umgebung jedes Nickelatoms wird durch zwei Schwefelatome in der äquatorialen Ebene und durch zwei Pyridyl-N-Atome in axialen Positionen vervollständigt. Magnetische Suszeptibilitäts-Messungen über den Bereich von 5 bis 299 K zeigen antiferromagnetische Wechselwirkungen, die schwach sind in 1 (J ϭ Ϫ12,8 cm Ϫ1 ) und stark in 2 und 3 (J ϭ Ϫ37,8 bzw. Ϫ40,9 cm Ϫ1 ), was im Fall von 1 in Übereinstimmung mit den beobachteten Strukturparametern steht.

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Synthesis and characterization of (μ-oxalato)nickel(II) complexes

Cited by 26 publications

References 16 publications

Synthesis, crystal, and molecular structure of coordination polymers constructed by self-assembly of NiN4 cores with 2,2′-iminodibenzoate and nitroprusside ions

Synthesis, crystal, and molecular structure of coordination polymers constructed by self-assembly of NiN4 cores with 2,2′-iminodibenzoate and nitroprusside ions

One‐Dimensional Magnetism in New, Layered Structures: Piperazine‐Linked Copper and Nickel Oxalate Chains

Magnetic Exchange Interactions in Dinuclear Copper(II) and Nickel(II) Complexes with μ‐Oxalato Bridges. The Structure of μ‐Oxalato(O, O′, O″, O‴)‐bis{[1, 8‐di(2‐pyridyl)‐3, 6‐dithiaoctane‐N, N′, S, S′]nickel(II)} Dinitrate Dihydrate

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