Facile synthesis and vapochromic studies of Co(II) complexes bearing NO and OO donor ligands

Tella, Adedibu C.; Owalude, Samson O.; Alimi, Lukman O.; Oladipo, Adetola C.; Olatunji, Sunday J.; Adeyemi, Olalere G.

doi:10.1016/j.ejbas.2015.12.001

Cited by 5 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, metals have unique characteristics that involve reactivity toward organic substrates, variable coordination modes, and redox activity. For these reasons, the design of special coordination complexes, whichever as drug or pro-drug, is considered the main target to get a powerful tool in cancer diagnosis [5][6][7][8]. Based on the interface between molecular bioinorganic chemistry and biological system, the design of coordination complexes for cancer treatment in the current research is extensive in scope, targets multiple cellular and biological properties of many types of tumor.…”

Section: Introductionmentioning

confidence: 99%

Ball milling: a simple and efficient method for quantitative solvent-free synthesis of new potential bioactive Ni(II) and Co(II) complexes

Zaky

Al-dawood

Al-Ahmed³

2021

Egyptian Journal of Basic and Applied Sciences

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Ball milling: a simple and efficient method for quantitative solvent-free synthesis of new potential bioactive Ni(II) and Co(II) complexes

Zaky

Al-dawood

Al-Ahmed³

2021

Egyptian Journal of Basic and Applied Sciences

View full text Add to dashboard Cite

show abstract

“…The compounds were exposed to some volatile organic compounds (VOCs) containing nitrogen or oxygen donor atoms in the solid-state and their vapochromic behaviors studied using color changes, FT-IR and solid-state UV-vis spectroscopies. Heating the samples exposed to the VOCs for a few minutes at 100 °C regenerates the original material without degradation, even after several heating cycles (Tella et al 2016). Also, Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) complexes of mixed ligands, Riboflavin (HL) and 4aminobenzoic acid (HL1) were synthesized and characterized by percentage metal, infrared and electronic (solid reflectance) spectroscopies, room temperature magnetic moments, melting points and conductance measurements.…”

Section: Introductionmentioning

confidence: 99%

GREEN SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDIES OF MIXED LIGAND COMPLEXES OF Co (II), Ni (II) and V(III) METALS USING SOME AMINO ACIDS AS LIGANDS

Gwaram¹,

Salisu²,

Manir³

2021

FJS

View full text Add to dashboard Cite

Co (II), Ni (II) and V (III) metal complexes were synthesized mechanochemically using L-Leucine, L-Tyrosine and Creatinine as mixed ligands. The metals and the ligands were grounded using an agate mortar with a pestle. The compounds formed were characterized using their melting/decomposition temperature, solubility, magnetic susceptibility, conductivity measurement, Infrared analysis and scanning electron microscope (SEM). The Metal – ligand ratios were investigated via Job’s method of continuous variation. The shifts of bands (for instance 1693-1677 cm-1 to 1674-1607 cm-1) in C=O and the appearance of new bands in the complexes (683-669 and 713-750 cm-1 indicates the complexation. The lower conductivity measurement values (15.00 to 32.40) µS.cm-1 suggested the non-electrolytic nature of the complexes. The magnetic effective value of the metal complexes showed that all the three complexes are paramagnetic and octahedral. It was concluded that the amino acids (ligands) coordinated in a bidentate way through the nitrogen from the amino group and oxygen from carboxylate. The complexes were screened for their antimicrobial activities against two bacterial isolates (Streptococcus pneumoniae and Klebsiella pneumoniae). All the complexes exhibited good activity against the organisms

show abstract

“…As part of our work on synthesis of transition metal complexes for sensing volatile organic molecules [16][17][18], a co-crystallised cluster synthesized from Cobalt(II) ion and dipicolinic acid is reported for recognition and sensing of methanol vapour.…”

Section: Introductionmentioning

confidence: 99%

A Co-Crystallised Cobalt(II) Cluster of Pyridinedicarboxylic Acid (PDC) as a Luminescent Material for Selective Sensing of Methanol

et al. 2021

View full text Add to dashboard Cite

A luminescent Cobalt(II) co-crystal [Co13(PDC)16(H2O)24.7H2O] 1 (where H2PDC = 2,6pyridinedicarboxylic acid) have been prepared by oven-heating and slow evaporation of solvent. Single crystal X-ray diffraction (SCXRD) analysis revealed that 1 is a mixture of complexes that crystallizes in the triclinic space group P-1 and the geometry around the Co(II) ions is octahedral. The structure is extensively imbued with hydrogen bonding that helps in stabilizing the complex. Thermogravimetric analysis indicates that 1 is thermally stable up to 364 ο C. The luminescence properties of 1 revealed a strong emission centered at 437 nm (λex = 345 nm) assigned to ligand to metal charge transfer (LMCT). The luminescence sensing of 1 towards volatile organic molecules were also examined. However, 1 displayed a turn off towards methanol compared to other molecules with high quenching efficiency and low limit of detection (3.5 x 10 -4 vol%). The results show excellent selectively and high sensitivity.Powder X-ray diffraction studies revealed that the structural integrity of the complex was maintained after exposure to methanol vapour. Theoretical studies also revealed small binding energy (-413.2 au) and low energy gap (1.19) for 1-CH3OH adduct.

show abstract

Facile synthesis and vapochromic studies of Co(II) complexes bearing NO and OO donor ligands

Cited by 5 publications

References 31 publications

Ball milling: a simple and efficient method for quantitative solvent-free synthesis of new potential bioactive Ni(II) and Co(II) complexes

Ball milling: a simple and efficient method for quantitative solvent-free synthesis of new potential bioactive Ni(II) and Co(II) complexes

GREEN SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDIES OF MIXED LIGAND COMPLEXES OF Co (II), Ni (II) and V(III) METALS USING SOME AMINO ACIDS AS LIGANDS

A Co-Crystallised Cobalt(II) Cluster of Pyridinedicarboxylic Acid (PDC) as a Luminescent Material for Selective Sensing of Methanol

Contact Info

Product

Resources

About