A compressed octahedral cobalt(II) complex in the crystal structure of diaqua[6,6′-sulfanediylbis(2,2′-bipyridine)]cobalt(II) dinitrate

Li, Guo Ling; Sato, Osamu

doi:10.1107/s2056989017008428

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…All the bond lengths are normal and agree well with those in related high-spin state Fe III compounds (Li et al, 2013;Phonsri et al, 2017). The C1-S1 bond length [1.720 (4) Å ] is comparable with the ordinary C-S bond length (Li & Sato, 2017), whereas the C1 N2 and C2 N3 bond distances [1.314 (5) and 1.287 (5) Å , respectively] are significantly smaller than those of C1-N1 [1.350 (5) Å ] and C16-N5 [1.377 (6) Å ] indicating the double-bond character. The bond angles further evidence the significantly distorted octahedral coordination geometry around the Fe III ion.…”

Section: Structural Commentarysupporting

confidence: 75%

A new mononuclear neutral high-spin iron(III) complex with the different tridentate ligands 5-bromosalicylaldehyde (pyridin-2-yl)hydrazone and 5-bromosalicylaldehyde thiosemicarbazone

2018

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The title neutral mononuclear complex, [1-(5-bromo-2-oxidobenzylidene)thiosemicarbazidato](4-bromo-2-{[2-(pyridin-2-yl)hydrazinylidene]methyl}pheno-lato)iron(III), [Fe(C 8 H 6 BrN 3 OS)(C 12 H 9 BrN 3 O)] (I), crystallizes in the monoclinic space group C 2 /c and has two different planar tridentate ligands. The central Fe III ion is coordinated to three N, two O and one S atom, forming a distorted octahedral FeN 3 O 2 S coordination geometry. In the crystal, the complex molecules are linked by N-HÁ Á ÁO and N-HÁ Á ÁN hydrogen bonds and -interactions into layers parallel to (100). Magnetic measurements show that the central Fe III ion is in the high-spin state; this is also supported by the bond distances around the Fe III ion.

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Section: Structural Commentarysupporting

confidence: 75%

A new mononuclear neutral high-spin iron(III) complex with the different tridentate ligands 5-bromosalicylaldehyde (pyridin-2-yl)hydrazone and 5-bromosalicylaldehyde thiosemicarbazone

2018

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“…All these factors are important to obtaining 3d-based SMMs and SIMs because in 3d metals, the orbital angular momentum is readily quenched by the ligand field [14,34]. For mononuclear 3d metal compounds showing slow magnetic relaxation, a low coordination number which leads to a relatively weak Schiff base ligand field is needed because they reduce the 3d orbital splitting energy, thereby enhancing magnetic anisotropy [35][36][37][38][39]. In addition, this type of ligand can be well used as a coordinative moiety of transition metal complexes or as a building block for supramolecular assemblies by taking advantage of π-conjugation.…”

Section: Introductionmentioning

confidence: 99%

Field-Induced Single Molecule Magnetic Behavior of Mononuclear Cobalt(II) Schiff Base Complex Derived from 5-Bromo Vanillin

et al. 2022

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A mononuclear Co(II) complex of a Schiff base ligand derived from 5-Bromo-vanillin and 4-aminoantipyrine, that has a compressed tetragonal bipyramidal geometry and exhibiting field-induced slow magnetic relaxation, has been synthesized and characterized by single crystal X-ray diffraction, elemental analysis and molecular spectroscopy. In the crystal packing, a hydrogen-bonded dimer structural topology has been observed with two distinct metal centers having slightly different bond parameters. The complex has been further investigated for its magnetic nature on a SQUID magnetometer. The DC magnetic data confirm that the complex behaves as a typical S = 3/2 spin system with a sizable axial zero-field splitting parameter D/hc = 38 cm−1. The AC susceptibility data reveal that the relaxation time for the single-mode relaxation process is τ = 0.16(1) ms at T = 2.0 K and BDC = 0.12 T.

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“…It is well known that organic ligands play a crucial role in the rational design and synthesis of coordination polymers (Li & Sato, 2017;Sun & Sun, 2015). Among the many organonitrogen ligands, the rigid 5-(pyridin-4-yl)-1H,2 0 H-3,3 0 -bi(1,2,4-triazole) ligand (H 2 pyttz) attracted our attention for the following reasons.…”

Section: Chemical Contextmentioning

confidence: 99%

Synthesis and crystal structure of a two-dimensional Co^IIcoordination polymer: poly[(μ₃-3-carboxybenzoato)[μ₂-5-(pyridin-4-yl)-1H,2′H-3,3′-bi[1,2,4-triazole]]cobalt(II)]

Zhao

Chen

2017

Acta Cryst E

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Edited by V. Khrustalev, Russian Academy of Sciences, Russia Keywords: crystal structure; cobalt complex; 5-(pyridin-4-yl)-1H,2 0 H-3,3 0 -bi(1,2,4-triazole); benzene-1,3-dicarboxylic acid; octahedral geometry; hydrogen bond. CCDC reference: 1498228Supporting information: this article has supporting information at journals.iucr.org/e Synthesis and crystal structure of a two-dimensional Co II coordination polymer: poly [(l 3 -3-carboxybenzoato)

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A compressed octahedral cobalt(II) complex in the crystal structure of diaqua[6,6′-sulfanediylbis(2,2′-bipyridine)]cobalt(II) dinitrate

Cited by 4 publications

References 15 publications

A new mononuclear neutral high-spin iron(III) complex with the different tridentate ligands 5-bromosalicylaldehyde (pyridin-2-yl)hydrazone and 5-bromosalicylaldehyde thiosemicarbazone

A new mononuclear neutral high-spin iron(III) complex with the different tridentate ligands 5-bromosalicylaldehyde (pyridin-2-yl)hydrazone and 5-bromosalicylaldehyde thiosemicarbazone

Field-Induced Single Molecule Magnetic Behavior of Mononuclear Cobalt(II) Schiff Base Complex Derived from 5-Bromo Vanillin

Synthesis and crystal structure of a two-dimensional Co^IIcoordination polymer: poly[(μ₃-3-carboxybenzoato)[μ₂-5-(pyridin-4-yl)-1H,2′H-3,3′-bi[1,2,4-triazole]]cobalt(II)]

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A compressed octahedral cobalt(II) complex in the crystal structure of diaqua[6,6′-sulfanediylbis(2,2′-bipyridine)]cobalt(II) dinitrate

Cited by 4 publications

References 15 publications

A new mononuclear neutral high-spin iron(III) complex with the different tridentate ligands 5-bromosalicylaldehyde (pyridin-2-yl)hydrazone and 5-bromosalicylaldehyde thiosemicarbazone

A new mononuclear neutral high-spin iron(III) complex with the different tridentate ligands 5-bromosalicylaldehyde (pyridin-2-yl)hydrazone and 5-bromosalicylaldehyde thiosemicarbazone

Field-Induced Single Molecule Magnetic Behavior of Mononuclear Cobalt(II) Schiff Base Complex Derived from 5-Bromo Vanillin

Synthesis and crystal structure of a two-dimensional CoIIcoordination polymer: poly[(μ3-3-carboxybenzoato)[μ2-5-(pyridin-4-yl)-1H,2′H-3,3′-bi[1,2,4-triazole]]cobalt(II)]

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Synthesis and crystal structure of a two-dimensional Co^IIcoordination polymer: poly[(μ₃-3-carboxybenzoato)[μ₂-5-(pyridin-4-yl)-1H,2′H-3,3′-bi[1,2,4-triazole]]cobalt(II)]