Syntheses, crystal structures, and IR spectra of isonicotinamide-isonicotinamidium bis(isonicotinamide)-tetrakis(isothiocyanato)ferrate(III) and isonicotinamidium chloride

Lacková, Darina; Ondrejkovičová, Iveta; Padělková, Zdeňka; Koman, Marián

doi:10.1080/00958972.2014.917634

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…2.58–2.68 Å in the nearly linear N···H + ···N units (177–180°). While the N1···N3 distance of 2.662(5) Å in 6 ·I – falls within same range with the previously reported values, the distinctive tilting between the pyridines is clearly noticeable in the N1···H1···N3 angle of 160.7° (Table ) in comparison to the value of 172°, representing the narrowest angle in the corresponding systems …”

Section: Resultssupporting

confidence: 89%

Reactivity of 4-Aminopyridine with Halogens and Interhalogens: Weak Interactions Supported Networks of 4-Aminopyridine and 4-Aminopyridinium

Malinen

Haukka

Konu

2019

Crystal Growth & Design

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The reaction of 4-aminopyridine (4-AP) with ICl in a 1:1 molar ratio in CH2Cl2 produced the expected charge-transfer complex [4-NH2-1λ 4-C5H4N-1-ICl] (1·ICl) and the ionic species [(4-NH2-1λ 4-C5H4N)2-1μ-I+][Cl–] (2·Cl–) in a 2:1 relation, as indicated by 1H NMR spectroscopy in solution. In contrast, only the ionic compound [(4-NH2-1λ 4-C5H4N)2-1μ-I+][IBr2 –] (2·IBr2 –) was observed in the analogous reaction with IBr. The reaction between 4-AP and I2 in a 1:1 molar ratio also afforded two components, one of which was identified as the congeneric cation in [(4-NH2-1λ 4-C5H4N)2-1μ-I+][I7 –] (2·I7 –) that contains a polyiodide anion as a result of transformation in a 1:2 molar ratio between the starting materials. In all of these ionic products, the crystal structures feature an iodonium ion, I+, trapped between two 4-AP rings through N···I+···N contact. Surprisingly, the reaction of 4-AP with Br2 in CH2Cl2 resulted in an immediate protonation of the 4-aminopyridine (1H NMR) and [4-NH2-1λ 4-C5H4N-1-H+][Br–] (3·Br–) was characterized as the main product. A subsequent peculiar bromination–dimerization process afforded the novel pyridyl-pyridinium cations {3,3′,5′-Br3-1λ 4-[1,2′-(C5H4N)2]-4,4′-(NH2)2}+[X–] (4·Br–, 4·Br3 –) and {3′,5′-Br2-1λ 4-[1,2′-(C5H4N)2]-4,4′-(NH2)2}+[X–] (5·Br–, 5·Br3 –). Compounds 1–5 as well as two protonated species, [4-NH2-1λ 4-C5H4N-1-H+]2[Cl–][I3 –] (3 2·Cl–·I3 –) and [(4-NH2-1λ 4-C5H4N)2-1μ-H+][I–] (6·I–), all display extended 3D networks supported by halogen and hydrogen bonding in the solid state.

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Section: Resultssupporting

confidence: 89%

Reactivity of 4-Aminopyridine with Halogens and Interhalogens: Weak Interactions Supported Networks of 4-Aminopyridine and 4-Aminopyridinium

Malinen

Haukka

Konu

2019

Crystal Growth & Design

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“…The heterocyclic IOP Publishing doi:10.1088/1742-6596/2556/1/012002 2 N atom of iso-nicotinamide functions for the formation of strong coordination bonds with transition metal ions, while the amide group participates in the formation of hydrogen bonds [11]. Metal complexes with iso-nicotinamide are more effective than free ligands [12]. In this study, researchers focused on the synthesis and characterization of Co(II) complex with iso-nicotinamide ligands.…”

Section: Introductionmentioning

confidence: 99%

A Novel Synthesis of iso-nicotinamide ligand and its cobalt complex

Nurdiana,

Wahyuningsih,

Widjonarko

et al. 2023

J. Phys.: Conf. Ser.

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The complex of cobalt(II) with iso-nicotinamide (intmd) was synthesized at a 1:1 mole ratio of metal to ligand. The complex formula obtained is [Co(intmd)2(H2O)2]Cl2.nH2O (n = 0 or 1). The Co(II)-intmd complex was characterized by UV-Vis Spectrophotometer, Atomic Absorption Spectrophotometry (AAS), Differential Thermal Analyzer (DTA), Conductivity meter, Fourier-transform Infrared Spectroscopy (FTIR), Magnetic Susceptibility Balance (MSB), and Powder X-Ray Diffraction. Thermal analysis showed the complex contained several hydrates. The electrical conductivity of the complex in aquades is 1:1, the complex is electrolyte. The infrared spectrum shows that C=O and -NH2 from intmd are coordinated with metal ion. The electronic spectra show two peaks indicating the transitions 4T1g(F) → 4T1g(P) (ν3) and 4T1g(F) → 4A2g(F) (ν2). The complex is paramagnetic with μeff = 5.31-5.44 BM. It is suggested that the Co(II)-intmd complex has an octahedral geometry and an orthorhombic crystal system.

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Iron(II) pyridinecarboxamide complexes: Synthesis, crystal structures and magnetic properties

Dojer

Golobič

Babič

et al. 2022

Journal of Molecular Structure

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Syntheses, crystal structures, and IR spectra of isonicotinamide-isonicotinamidium bis(isonicotinamide)-tetrakis(isothiocyanato)ferrate(III) and isonicotinamidium chloride

Cited by 6 publications

References 26 publications

Reactivity of 4-Aminopyridine with Halogens and Interhalogens: Weak Interactions Supported Networks of 4-Aminopyridine and 4-Aminopyridinium

Reactivity of 4-Aminopyridine with Halogens and Interhalogens: Weak Interactions Supported Networks of 4-Aminopyridine and 4-Aminopyridinium

A Novel Synthesis of iso-nicotinamide ligand and its cobalt complex

Iron(II) pyridinecarboxamide complexes: Synthesis, crystal structures and magnetic properties

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