Synthesis and structural characterization of Ni(II) complexes containing a heterocyclic NO donor ligand

Kumar, Pawan; Radhakrishnan, P. K.

doi:10.1016/j.poly.2011.08.013

Cited by 7 publications

(6 citation statements)

References 35 publications

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“…Three expected bands are observed in UV–visible‐NIR spectrum of 4 . These bands are described as 375 nm ( 3 A 2g → 3 T 1g (P), 621 nm ( 3 A 2g → 3 T 1g (F)) and 1060 nm ( 3 A 2g → 3 T 2g (F) . Thus, the spectrum of 1 – 4 further confirm the presence of corresponding metal (II) ion in all complexes.…”

Section: Resultssupporting

confidence: 55%

Mononuclear metal (II) complexes of a Bis(organoamido)phosphate ligand with antimicrobial activities against Escherichia coli

Pal

Tarafdar

Sinha

et al. 2017

Applied Organom Chemis

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A new tripodal ligand [PO(NH 2 MePy) 3 ] (L) ( 2 MePy = 2-(4-methyl pyridyl)) have been synthesized by treating phosphorous oxychloride with 2-Amino-4methylpyridine in toluene under refluxing condition. The ligand was appeared as a white solid and characterized by several standard analytical and spectroscopic techniques such as FT-IR, NMR ( 1 H, 13 C{ 1 H} and 31 P{ 1 H}) and ESI-MS spectroscopy. The ligand (L) undergone metal-assisted hydrolysis of one P-N bond when treated it with hydrated metal nitrates, M(NO 3 ) 2 ·xH 2 O (M = Zn, Cu, Co and Ni) under hydrothermal reaction condition in DMF-H 2 O (1:1). This results in the formation of four mononuclear complexes [{PO 2 (NH 2 MePy) 2 } 2 M] [M = Zn (1), Cu (2), Co (3), Ni (4)], where ligand (L) hydrolyses to a anionic bis(organoamido)phosphate, [PO 2 (NH 2 MePy) 2 ] − . All complexes were completely characterized by various analytical techniques and their solid state molecular structures were established by single crystal X-ray diffraction. All complexes are isostructural with a metal (II) ion situating at the centre of a distorted octahedron. Two tridentate [PO 2 (NH 2 MePy) 2 ] − ligands are coordinated to metal(II) ion through N-and Odonor atoms, thus neutralizing the charge of the complex. Optical properties of all complexes in solid state have been studied. Moreover, antimicrobial activities of complexes 1-4 have been explored. To the best of our knowledge, this is the first report of such compounds investigated for their antimicrobial activities. KEYWORDS antimicrobial activity, bis(organoamido)phosphate ligand, mononuclear metal complex, P-N bond hydrolysis, X-ray diffraction

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Section: Resultssupporting

confidence: 55%

Mononuclear metal (II) complexes of a Bis(organoamido)phosphate ligand with antimicrobial activities against Escherichia coli

Pal

Tarafdar

Sinha

et al. 2017

Applied Organom Chemis

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“…Heterocyclic ligands have attracted much interest as versatile ligands with a variety of coordination modes with transition metal centres (Galani et al, 2014;Vimal Kumar & Radhakrishnan, 2011;Coropceanu et al, 2014;Wang, Chen et al, 2012). In particular, 1,2,4-triazole derivatives and their metal complexes have been studied extensively in recent years (Naik et al, 2011;Wang, Zhang et al, 2012;Wang et al, 2014;Liu, He et al, 2009), mainly because of their unique structures and their potential applications in optical (Manjunatha et al, 2013), electrical (Luo et al, 2013;Matesanz et al, 2004), and biological and antimicrobial areas (Tabatabaee et al, 2013;Xiong et al, 2014;Singh et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

A new Co^IIcomplex of diniconazole: synthesis, crystal structure and antifungal activity

Yan

et al. 2015

Acta Crystallogr C

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A new Co(II) complex of diniconazole, namely diaqua[(E)-(RS)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl-κN(4))pent-1-en-3-ol]cobalt(II) dinitrate dihydrate, [Co(C15H17Cl2N3O)3(H2O)2](NO3)2·2H2O, was synthesized and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Crystal structural analysis shows that the centrosymmetric Co(II) cation is coordinated by four diniconazole ligands and two water molecules, forming a six-coordinated octahedral structure. There are also two free nitrate counter-anions and two additional solvent water molecules in the structure. Intermolecular O-H...O hydrogen bonds link the complex cations into a one-dimensional chain. In addition, the antifungal activity of the complex against Botryosphaeria ribis, Gibberella nicotiancola, Botryosphaeria berengriana and Alternariasolani was studied. The results indicate that the complex shows a higher antifungal activity for Botryosphaeria ribis and Botryosphaeria berengriana than diniconazole, but a lower antifungal activity for Gibberella nicotiancola and Alternariasolani.

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“…The low complex formation at pH < 6.5 and nickel hydroxide formation at pH > 8 will decrease the efficiency of Ni(II) extraction. As mentioned in Section 3.1, the FT-IR of Ni(II) complex with EP4NP showed some peaks which are related to formation Ni-N and Ni-O vibration bands [38]. In acidic media (pH < 4), the N atoms of EP4NP ( Figure 1) will be protonated and cannot act as donor.…”

Section: Effect Of Phmentioning

confidence: 87%

“…The study of IR spectrum of Ni(II) complex with electrode product (EP4NP) showed some peaks around 490-520 and 600-680 cm −1 ( Figure 1S). Some authors have reported for different ligands the Ni-N and Ni-O stretching vibration around 450-500 and 550-600 cm −1 , respectively [38].…”

Section: Characterisation Of Ep4np and Chelation Investigationmentioning

confidence: 99%

Synthesis, characterisation and application of mercapto- and polyaminophenol-bifunctionalised MCM-41 for dispersive micro solid phase extraction of Ni(II) prio to inductively coupled plasma-optical emission spectrometry (DMSPE-ICP-OES)

Jalali¹,

Aliakbar

2015

International Journal of Environmental Analytical Chemistry

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Synthesis and structural characterization of Ni(II) complexes containing a heterocyclic NO donor ligand

Cited by 7 publications

References 35 publications

Mononuclear metal (II) complexes of a Bis(organoamido)phosphate ligand with antimicrobial activities against Escherichia coli

Mononuclear metal (II) complexes of a Bis(organoamido)phosphate ligand with antimicrobial activities against Escherichia coli

A new Co^IIcomplex of diniconazole: synthesis, crystal structure and antifungal activity

Synthesis, characterisation and application of mercapto- and polyaminophenol-bifunctionalised MCM-41 for dispersive micro solid phase extraction of Ni(II) prio to inductively coupled plasma-optical emission spectrometry (DMSPE-ICP-OES)

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Synthesis and structural characterization of Ni(II) complexes containing a heterocyclic NO donor ligand

Cited by 7 publications

References 35 publications

Mononuclear metal (II) complexes of a Bis(organoamido)phosphate ligand with antimicrobial activities against Escherichia coli

Mononuclear metal (II) complexes of a Bis(organoamido)phosphate ligand with antimicrobial activities against Escherichia coli

A new CoIIcomplex of diniconazole: synthesis, crystal structure and antifungal activity

Synthesis, characterisation and application of mercapto- and polyaminophenol-bifunctionalised MCM-41 for dispersive micro solid phase extraction of Ni(II) prio to inductively coupled plasma-optical emission spectrometry (DMSPE-ICP-OES)

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A new Co^IIcomplex of diniconazole: synthesis, crystal structure and antifungal activity