Transition metal complexes of N-(2-benzamide)pyridine-2′-carboxamide, a potentially tridentate ligand containing one secondary and one primary amide group: Preparation and characterization in the solid state

Manessi‐Zoupa, Evy; Perlepes, Spyros P.; Hondrellis, V.; Tsangaris, J. M.

doi:10.1016/0162-0134(94)85022-4

Cited by 19 publications

(10 citation statements)

References 53 publications

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“…In the spectrum of chromium complexes, a sharp strong band at 1,385-1,384 cm )1 confirms the presence of uncoordinated nitrate ion. The presence of an ionic NO 3 ) in chromium complexes follows through the appearance of the m(E¢)[m d (NO)] mode of the D 3h ionic nitrate at $1,385 cm )1 [18].…”

Section: Ir Spectra and Mode Of Bondingmentioning

confidence: 99%

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Spectroscopic and thermal investigations of complexes of CrIII, MnII, ZnII & CdII - carboxamide

Singh

Mishra

Garg

2007

Transition Met Chem

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Complexes of Cr III , Mn II , Zn II & Cd II with the polydentate carboxamide ligandN¢, N¢¢-bis(3-carboxy-1-oxoprop-2-enyl) 2-Amino-N-arylbenzamidine (H 2 L) have been synthesized and characterized by elemental analyses, spectroscopic studies (Vibrational, electronic, ESR and 1 H-NMR), magnetic susceptibility measurements, thermal studies and powder diffraction studies. The vibrational spectral data are in agreement with coordination of amide and carboxylate oxygen of the ligands with the metal ions. The electronic spectra indicates octahedral or tetrahedral geometry around the metal ions, has been supported by magnetic susceptibility measurements. The results of electron spin resonance & 1 H-NMR spectra have supported the results of other spectral techniques. Kinetic and thermodynamic parameters were computed from the thermal data using Coats and Redfern method, which confirm first order kinetics. Powder diffraction determines the cell parameters of the complexes.

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Section: Ir Spectra and Mode Of Bondingmentioning

confidence: 99%

“…There are numerous examples of the in vivo interactions of transition metal ions with the amide group(s), and these interactions can be of biological importance [1][2][3]. Magainin-2-amide, the bioactive peptoid exhibits selective, potent antibacterial activity against both Gram-positive and Gram-negative bacteria [1].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and thermal investigations of complexes of CrIII, MnII, ZnII & CdII - carboxamide

Singh

Mishra

Garg

2007

Transition Met Chem

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“…In the visible absorption spectra of complexes ( Figure 10: Electronic spectra of complexes), two bands in the range of 8000-13500 cm )1 and 15000-19000 cm )1 were observed. Assuming an octahedral coordination for Ni II complexes, three spin allowed transitions are expected: 3 A 2g ( 3 F) fi 3 T 2g ( 3 F) (m 1 ), 3 The magnetic susceptibility measurements were carried out in the solid state at 298 K.The complexes exhibit magnetic moment (l eff .) values are in the range of 2.4-3.0BM which corresponds to two electrons, are consistent with a weak field octahedral/ tetrahedral geometry as expected.…”

Section: Uv-vis Spectra and Magnetic Susceptibility Measurementmentioning

confidence: 99%

“…The reason for this interest stems from the fact that such complexes can be easily made and variation of the substituents is facile. There are numerous examples of the in-vivo interactions of transition metal ions with the amide group(s), and these interactions can be of biological importance [1][2][3]. Magainin-2-amide, the bioactive peptoid, exibits selective, potent antibacterial activity against both Gram-positive and Gram-negative bacteria [1].…”

Section: Introductionmentioning

confidence: 99%

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Nickel(II) complexes of new polydentate carboxyamide: spectroscopic, kinetics of thermal decomposition and X-ray powder diffraction studies

Singh

Mishra

Garg

2007

Transition Met Chem

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Complexes of Ni II with new ligands N¢,N¢¢-bis(3-carboxy-1-oxoprop-2-enyl), 2-Amino-N-arylbenzamidine (C 21 H 17 N 3 O 6 ), N¢,N¢¢-bis(3-carboxy-1-oxopropanyl) 2-Amino-N-arylbenzamidine (C 21 H 21 N 3 O 6 ) and N¢,N¢¢-bis (3-carboxy-1-oxophenelenyl) 2-Amino-N-arylbenzamidine (C 29 H 21 N 3 O 6 ) have been synthesized and characterized by elemental analyses, vibrational spectra, electronic spectra, TOF-mass spectra, magnetic susceptibility measurements, thermal studies and X-ray powder diffraction studies. Vibrational spectra indicate coordination of amide and carboxylate oxygen of the ligands along with two water molecules giving a MO 6 weak field octahedral chromophore. Electronic spectra and magnetic susceptibility measurements reveal octahedral geometry for Ni II complexes. The elemental analyses and mass spectral data have justified the ML complexes. Kinetic and thermodynamic parameters were computed from the thermal data using Coats and Redfern method, which confirm first order kinetics. The crystal data: C 21 H 19 N 3 O 8 Ni is orthorhombic, space group P mmm , a = b = 9.015360(Å ), c = 10.554430(Å ), V = 572.11A 3 ; C 21 H 23 N 3 O 8 Ni is monoclinic, space group P 2/m , a = 15.08206(Å ), b = 5.358276(Å ), c = 9.898351(Å ), V = 671.58A 3 ; C 29 H 23 N 3 O 8 Ni is tetragonal, space group P 4/m , a = b = 6.328104(Å ), c = 9.82213(Å ), V = 393.33A 3 . Molecular structures of the complexes have been optimized by MM2 calculations and supported octahedral arrangements around Nickel(II) ions.

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A One-Dimensional Manganese(II) Coordination Polymer Derived from Zerovalent Manganese and 1-Hydroxybenzotriazole − Synthesis, Characterization, Crystal Structure and Magnetic Properties

Papaefstathìou

Vicente

Raptopoulou

et al. 2002

Eur. J. Inorg. Chem.

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The reaction of zerovalent manganese with 1‐hydroxybenzotriazole, btaOH, and NH4SCN in DMF in the presence of dioxygen allows isolation of the one‐dimensional coordination polymer [Mn3(btaO)2(NCS)4(DMF)8]n (3). X‐ray diffraction analysis reveals that the chain is best described as [Mn2(btaO)2(NCS)2(DMF)6] dimers linked by Mn(NCS)2(DMF)2 bridges. Molar magnetic susceptibility measurements of 3 in the 5−300 K range indicate weak antiferromagnetic coupling between the MnII atoms within the dinuclear subunits of the chain. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)

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Transition metal complexes of N-(2-benzamide)pyridine-2′-carboxamide, a potentially tridentate ligand containing one secondary and one primary amide group: Preparation and characterization in the solid state

Cited by 19 publications

References 53 publications

Spectroscopic and thermal investigations of complexes of CrIII, MnII, ZnII & CdII - carboxamide

Spectroscopic and thermal investigations of complexes of CrIII, MnII, ZnII & CdII - carboxamide

Nickel(II) complexes of new polydentate carboxyamide: spectroscopic, kinetics of thermal decomposition and X-ray powder diffraction studies

A One-Dimensional Manganese(II) Coordination Polymer Derived from Zerovalent Manganese and 1-Hydroxybenzotriazole − Synthesis, Characterization, Crystal Structure and Magnetic Properties

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