Two novel compartmental macrocyclic dinuclear copper(II) complexes with μ2-Cl and μ2-OAc bridges

Chu, Zhaolian; Huang, Wei

doi:10.1016/j.inoche.2008.06.016

Cited by 13 publications

(3 citation statements)

References 33 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the aqueous phase spectrum of 1, these absorption peaks are obtained at 228 and 271 nm, respectively. The bands at 223 and 268 nm in the UV-Vis-NIR spectrum of 2 can be ascribed due to π→π* transition of an aromatic ligand [56,57], while these peaks are obtained at 222 and 271 nm, respectively, in the aqueous phase UV-Vis spectrum of 2.…”

Section: Electronic Spectroscopymentioning

confidence: 97%

“…Absence of bands in the visible region is because of the Mn(II) center (d 5 system), for which all the electronic transitions from the 6 A 1g ground state are doubly forbidden [54,55]. The absorption bands obtained at 230 and 269 nm in the solid state spectrum of 1 are due to the π→π* transition of the aromatic ligands [56,57]. However, in the aqueous phase spectrum of 1, these absorption peaks are obtained at 228 and 271 nm, respectively.…”

Section: Electronic Spectroscopymentioning

confidence: 99%

See 1 more Smart Citation

Structure Guiding Supramolecular Assemblies in Metal-Organic Multi-Component Compounds of Mn(II): Experimental and Theoretical Studies

et al. 2023

View full text Add to dashboard Cite

Two multi-component coordination compounds of Mn(II), viz. [Mn(H2O)6](2-Mepy)2(4-NO2bz)2·2H2O (1) and [Mn(H2O)6][Mn(2,3-PDCH)3]2 (2) (where, 2-Mepy = 2-methylpyridine, 4-NO2bz = 4-nitrobenzoate, 2,3-PDC = 2,3-pyridinedicarboxylate), have been synthesized and characterized using elemental, spectroscopic (FT-IR and electronic), TGA and single-crystal X-ray diffraction analyses. Complex 1 is a co-crystal hydrate of Mn(II) involving uncoordinated 2-Mepy, 4-NO2bz and water molecules; while compound 2 is a multi-component molecular complex salt of Mn(II) comprising cationic [Mn(H2O)6]2+ and anionic [Mn(2,3-PDCH)3]−complex moieties. The uncoordinated 2-Mepy and 4-NO2bz moieties of 1 are involved in lone-pair (l.p)-π and C–H⋯π interactions which stabilize the layered assembly of the compound. The crystal structure of compound 2 has been previously reported. However, we have explored the unusual enclathration of complex cationic moieties within the supramolecular host cavities formed by the molecular assembly of complex anionic moieties. The supramolecular assemblies obtained in the crystal structure have been further studied theoretically using DFT calculations, quantum theory of atoms-in-molecules (QTAIM) and non-covalent interaction plot (NCI plot) computational tools. Theoretical studies reveal that the combination of π-staking interactions (l.p-π, π-π and C–H···π) have more structure-guiding roles compared to the H-bonds. The large binding energy of π-stacking interactions in 2 is due to the antiparallel orientation of aromatic rings and their coordination to the metal centers, thereby increasing the contribution of the dipole–dipole interactions.

show abstract

Section: Electronic Spectroscopymentioning

confidence: 97%

Section: Electronic Spectroscopymentioning

confidence: 99%

Structure Guiding Supramolecular Assemblies in Metal-Organic Multi-Component Compounds of Mn(II): Experimental and Theoretical Studies

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The signal of NH proton in thiazine ring was observed at 10.42 ppm. [49] The specific singlet signal of the azomethine proton (CH=N) was observed at δ 8.76 ppm. The signals due to aromatic protons are detected in the range δ 6.89-7.78 ppm.…”

Section: The Hydrazone Ligand (H 2 L)mentioning

confidence: 99%

Structural variety of Cu (II), Ni (II), and Co (II) complexes of a hydrazone based on 5‐acetyl‐4‐hydroxy‐2H‐1,3‐thiazine‐2,6(3H)‐dione: Synthesis, spectroscopic, density functional theory, antitumor, and docking studies

Adly

Abdelrhman

El‐Shetary

2023

Applied Organom Chemis

View full text Add to dashboard Cite

New nickel (II), cobalt (II), and several copper (II) complexes have been synthesized from the hydrazone ligand (AHTDSH; H2L); which obtained from 5‐acetyl‐4‐hydroxy‐2H‐1,3‐thiazine‐2,6(3H)‐dione with salicylaldehyde hydrazone. The structures of H2L ligand and the prepared complexes were confirmed by spectroscopic and analytical techniques. The ligand behaves as bis (monobasic bidentate) and dibasic tetradentate chelating agent via azomethine nitrogen and phenolic oxygen atoms. Octahedral geometries have been assigned for the prepared complexes. The Coats–Redfern equations were used to estimate the kinetic parameters (Ea, A, H, S, and G) of the thermal decomposition stages. The molecular structural characteristics of the ligand and its metal complexes were estimated based on density functional theory (DFT) level implemented in the Gaussian 09 software at B3LYP/6‐311G(d,p) level and the theoretical data were connected with the results of the experimental work. The anticancer activity of AHTDSH ligand and its complexes was demonstrated toward HepG2 cell lines. The interaction between the chemical and the active site of the CDK2 kinase was examined using a docking study of the hydrazone ligand and its complexes.

show abstract

μ‐Chlorido‐Bridged Dimanganese(II) Complexes of the Schiff Base Derived from [2+2] Condensation of 2,6‐Diformyl‐4‐methylphenol and 1,3‐Bis(3‐aminopropyl)tetramethyldisiloxane: Structure, Magnetism, Electrochemical Behaviour, and Catalytic Oxidation of Secondary Alcohols

Alexandru¹,

Cazacu²,

Arvinte³

et al. 2013

Eur J Inorg Chem

View full text Add to dashboard Cite

The reaction of 2,6-diformyl-4-methylphenol with 1,3-bis(3aminopropyl)tetramethyldisiloxane in the presence of MnCl 2 in a 1:1:2 molar ratio in methanol afforded a dinuclear μchlorido-bridged manganese(II) complex of the macrocyclic [2+2] condensation product (H 2 L), namely, [Mn 2 Cl 2 (H 2 L)-(HL)]Cl·3H 2 O (1). The latter afforded a new compound, namely, [Mn 2 Cl 2 (H 2 L) 2 ][MnCl 4 ]·4CH 3 CN·0.5CHCl 3 ·0.4H 2 O (2), after recrystallisation from 1:1 CHCl 3 /CH 3 CN. The coexistence of the free and complexed azomethine groups, phenolato donors, μ-chlorido bridges, and the disiloxane unit were well evidenced by ESI mass spectrometry and FTIR spectroscopy and confirmed by X-ray crystallography. The [a] "Petru

show abstract

Two novel compartmental macrocyclic dinuclear copper(II) complexes with μ2-Cl and μ2-OAc bridges

Cited by 13 publications

References 33 publications

Structure Guiding Supramolecular Assemblies in Metal-Organic Multi-Component Compounds of Mn(II): Experimental and Theoretical Studies

Structure Guiding Supramolecular Assemblies in Metal-Organic Multi-Component Compounds of Mn(II): Experimental and Theoretical Studies

Structural variety of Cu (II), Ni (II), and Co (II) complexes of a hydrazone based on 5‐acetyl‐4‐hydroxy‐2H‐1,3‐thiazine‐2,6(3H)‐dione: Synthesis, spectroscopic, density functional theory, antitumor, and docking studies

μ‐Chlorido‐Bridged Dimanganese(II) Complexes of the Schiff Base Derived from [2+2] Condensation of 2,6‐Diformyl‐4‐methylphenol and 1,3‐Bis(3‐aminopropyl)tetramethyldisiloxane: Structure, Magnetism, Electrochemical Behaviour, and Catalytic Oxidation of Secondary Alcohols

Contact Info

Product

Resources

About