Synthesis, spectroscopic, thermal and structural properties of [M(3-aminopyridine)2Ni(μ-CN)2(CN)2]n (M(II)=Co and Cu) heteropolynuclear cyano-bridged complexes

Kartal, Zeki

doi:10.1016/j.saa.2014.12.117

Cited by 24 publications

(13 citation statements)

References 32 publications

(43 reference statements)

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“…Ce(IV) is coordinated with N amino and N carbinitrile atoms of H 2 L ligand and two oxygen atoms of two water molecules. The Ce‐N20, Ce‐N49, Ce‐N22 and Ce‐N42 bond lengths are2.432, 2.430, 2.265 and 2.264 Å and the bond length between Ce(IV) and oxygen atom of water molecule vary between 2.311 and 2.313 Å for Ce‐O1 and Ce‐O4 . Also, the angles around Ce(IV) with surrounding oxygen atoms vary from 63.49° to 144.66°; these values agree with these expected for a distorted octahedron.…”

Section: Computational Detailssupporting

confidence: 73%

“…The complex is six‐coordinate with distorted octahedral environment around the metal ion and Ce(IV) is coordinated to one N Amino atom and one N carbinitrile atom of H 2 L ligand and two oxygen atoms of SO 4 2− group. The bond lengths Ce‐N2, Ce‐N50,Ce‐N9 and Ce‐N48 are 2.265, 2.260, 2.433 and 2.432 Å and the bond distance between Ce‐O70 and Ce‐O71 of sulfate group are 2.312 and 2.309 Å . Also, the angles around the central metal ion Ce(IV) with surrounding four oxygen atoms and nitrogen atoms vary from 62.74° to 151.53°; these values differ legally from a regular octahedron.…”

Section: Computational Detailsmentioning

confidence: 96%

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Spectroscopic, DFT and antimicrobial activity of Zn(II), Zr(IV), Ce(IV) and U(VI) complexes of N,N‐ chelated 4,6‐bis (4‐chlorophenyl)‐2‐amino‐1,2‐dihydropyridine‐3‐carbinitrile

Sadeek

El‐Hamid

Zordok

2018

Applied Organom Chemis

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Four novel metal complexes of 4,6‐bis (4‐chlorophenyl)‐2‐amino‐1,2‐dihydropyridine‐3‐carbinitrile (H2L) with Zn(II), Zr(IV), Ce(IV) and U(VI) were synthesized. The structure was elucidated using elemental analysis, melting point, molar conductivity; spectroscopic techniques (IR, 1H NMR, UV–Vis., mass spectra) as well as thermo gravimetric analysis. The spectroscopic data proved that H2L chelated with the metal ions as a bidentate ligand through Namino and Ncarbinitrile atoms. The molecular structure of the complexes was determined using density functional theory (DFT). The central metal ion in each complex is six‐coordinate and the angles around it vary from 62.74° to 166.46°; these values agree with distorted octahedral geometry. The calculated total energy of the complexes found in the region – 406.342 to −459.717 au and the dipole moment change from 4.675 to 13.171D. The antibacterial and antifungal activities of the ligand, metal salts and complexes were estimated on some microorganisms. The complexes showed significant antibacterial profile in comparison to the free ligand.

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Section: Computational Detailssupporting

confidence: 73%

Section: Computational Detailsmentioning

confidence: 96%

Spectroscopic, DFT and antimicrobial activity of Zn(II), Zr(IV), Ce(IV) and U(VI) complexes of N,N‐ chelated 4,6‐bis (4‐chlorophenyl)‐2‐amino‐1,2‐dihydropyridine‐3‐carbinitrile

Sadeek

El‐Hamid

Zordok

2018

Applied Organom Chemis

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“…On the other hand, when the ampy ligand is linked to metal atoms from the ring nitrogen atom, there are significant shifts in the ring stretching and the deformation vibration frequencies. Especially, the increase in ring stretching frequencies is observed (17,23,31). The ring stretching modes of the free ampy ligand, ν(skeletal) assigned as the strong and sharp bands at 1220, 1088, 1065 and 994 cm -1 in the infrared spectrum of the free ampy.…”

Section: Ligand Vibrationsmentioning

confidence: 90%

Synthesis, spectroscopic, thermal, and structural properties of cyanobridged metal complexes containing tetracyanonickelate(II) building blocks with 4-aminomethylpyridine

Karaağaç¹

2019

Journal of the Turkish Chemical Society Section A: Chemistry

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New cyano-bridged metal complexes with chemical formulas [Fe(NH3)2(ampy)Ni(CN)4]n, [Co(H2O)2(ampy)Ni(CN)4]n and [Ni(NH3)2(ampy)Ni(CN)4]n (ampy = 4-aminomethylpyridine, hereafter abbreviated as Fe -Ni-ampy, Co-Ni-ampy and Ni-Ni-ampy) were obtained in the form of powders and examined by vibrational (infrared and Raman) spectroscopy, thermal (TG, DTG and DTA), and elemental analysis techniques. The infrared and Raman spectra of the complexes were performed in the range of 4000-400 cm -1 and 4000-250 cm -1 , respectively. General information about the structural features of synthesized complexes was obtained by considering the changes in the cyano group and characteristic peaks of ampy. The cleavage of the (CN) stretching bands in the infrared spectrum of the complexes shows that the terminal and bridge cyano groups are in the structure. Considering the variations in the vibrational frequencies of the cyano group and ampy ligand in the spectrum of the complexes, the Ni atom is in a square plane geometry with four cyano groups and two of these cyano groups are the bridge and the other two are terminal. In addition, the metal atoms [Fe(II), Co(II) or Ni(II)] are linked to the ring and amino nitrogen atoms of two symmetric ampy ligands, the two ammonia (two aqua ligands for Co-Ni-ampy) ligands and the two bridging cyano groups, and show a distorted octahedral geometry. The thermal degradation of the complexes was also studied between 30 and 950 ºC using TG, DTG, and DTA techniques.

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“…In the synthesized tetracyanonickellate anion, the ν(CN) stretching vibration band is shown at 2122 cm -1 . The coordination to second metal of the cyano group through the N atom in the tetracyanonickellate anion shifts the position of the ν(CN) absorption band to higher wavenumbers due to the kinematic coupling [29][30][31]. The ν(CN) stretching vibration frequencies in the infrared spectra of both Co-Ni-ampy and Ni-Ni-ampy are observed as a single peak at 2162 cm -1 (2135 cm -1 for Cd-Ni-ampy) and 2152 cm -1 , respectively.…”

Section: [Ni(cn)4] 2-group Vibrationsmentioning

confidence: 99%

Vibrational Spectroscopic and Thermal Investigations of the Cyano-Bridged Polymeric Complexes With 3-Aminomethylpyridine

Karaağaç¹

2019

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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New cyano-bridged polymeric complexes formulated as [Co(H2O)(ampy)Ni(CN)4]•H2O and [Ni(ampy)2Ni(CN)4]•H2O (ampy = 3-aminomethylpyridine: abbreviated henceforth as Co-Ni-ampy and Ni-Ni-ampy) have been obtained in powder form and characterized by vibrational (infrared and Raman) spectroscopy, thermal and elemental analyses. In previous study, structure of complex [Cd(NH3)(ampy)Ni(CN)4]n (Cd-Ni-ampy) was determined by single crystal X-ray diffraction methods. In this complex, the coordination environment of the Cd(II) ions are distorted octahedral geometry, whereas around the Ni(II) center is pyramidal. The spectral features suggest that Cd-Ni-ampy with Co-Ni-ampy are similar to each other and the ampy ligand is coordinated to metal ions as bidentate ligand. In addition, complex Ni-Ni-ampy is similar in structure to the Hofmann type complexes and its structure consists of polymeric layers of │Ni-Ni(CN)4│∞ with the ampy ligand bounded to the nickel(II) atom. Thermal stabilities and decomposition products of the complexes were investigated using TG, DTG and DTA curves in the temperature range of 30-700 °C in the static air atmosphere.

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Synthesis, spectroscopic, thermal and structural properties of [M(3-aminopyridine)2Ni(μ-CN)2(CN)2]n (M(II)=Co and Cu) heteropolynuclear cyano-bridged complexes

Cited by 24 publications

References 32 publications

Spectroscopic, DFT and antimicrobial activity of Zn(II), Zr(IV), Ce(IV) and U(VI) complexes of N,N‐ chelated 4,6‐bis (4‐chlorophenyl)‐2‐amino‐1,2‐dihydropyridine‐3‐carbinitrile

Spectroscopic, DFT and antimicrobial activity of Zn(II), Zr(IV), Ce(IV) and U(VI) complexes of N,N‐ chelated 4,6‐bis (4‐chlorophenyl)‐2‐amino‐1,2‐dihydropyridine‐3‐carbinitrile

Synthesis, spectroscopic, thermal, and structural properties of cyanobridged metal complexes containing tetracyanonickelate(II) building blocks with 4-aminomethylpyridine

Vibrational Spectroscopic and Thermal Investigations of the Cyano-Bridged Polymeric Complexes With 3-Aminomethylpyridine

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