Copper(II) complexes with tridentate N2O donor Schiff base isomers: Modulation of molecular and crystalline architectures through supramolecular interactions

Polyhedron ◽  
2013 ◽  
Vol 60 ◽  
pp. 68-77 ◽  
Author(s):  
Mithun Das ◽  
Biswa Nath Ghosh ◽  
Arto Valkonen ◽  
Kari Rissanen ◽  
Shouvik Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Supramolecular Interactions

scholarly journals Chiral crystallization of a zinc(II) complex

2021 ◽  
Vol 77 (5) ◽  
pp. 542-546
Author(s):  
Shabana Noor ◽  
Shintaro Suda ◽  
Tomoyuki Haraguchi ◽  
Fehmeeda Khatoon ◽  
Takashiro Akitsu
Keyword(s):  
Hydrogen Bond ◽  
Schiff Base ◽  
Complex Molecule ◽  
Solvent Molecule ◽  
Hirshfeld Surface ◽  
Supramolecular Interactions ◽  
Orthorhombic Space Group ◽  
Complex Molecules ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal

The compound, {6,6′-dimethoxy-2,2′-[(4-azaheptane-1,7-diyl)bis(nitrilomethanylidyne)]diphenolato}zinc(II) methanol monosolvate, [Zn(C22H27N3O4)]·CH3OH, at 298 K crystallizes in the orthorhombic space group Pna21. The Zn atom is coordinated by a pentadentate Schiff base ligand in a distorted trigonal–bipyramidal N3O2 geometry. The equatorial plane is formed by the two phenolic O and one amine N atom. The axial positions are occupied by two amine N atoms. The distorted bipyramidal geometry is also supported by the trigonality index (τ), which is found to be 0.85 for the molecule. In the crystal, methanol solvent molecule is connected to the complex molecule by an O—H...O hydrogen bond and the complex molecules are connected by weak supramolecular interactions, so achiral molecules generate a chiral crystal. The Hirshfeld surface analysis suggests that H...H contacts account for the largest percentage of all interactions.

Exploration of unconventional π–hole and C–H⋯H–C types of supramolecular interactions in a trinuclear Cd(ii) and a heteronuclear Cd(ii)–Ni(ii) complex and experimental evidence for preferential site selection of the ligand by 3d and 4d metal ions

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 39376-39386 ◽  
Author(s):  
Saikat Banerjee ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
Amrita Saha
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Experimental Evidence ◽  
Schiff Base Ligand ◽  
Site Selection ◽  
Supramolecular Interactions ◽  
Preferential Site ◽  
Selection Of

We report the synthesis of a trinuclear cadmium(ii) (1) and a di(phenoxido)-bridged dinuclear cadmium(ii)–nickel(ii) (2) complex derived from a bicompartmental (N2O4) Schiff base ligand.

Theoretical insights on the encapsulated hydronium ion mediated supramolecular assembly of nickel(II) Schiff base complexes: Strong hydrogen bonded interaction due to charge transfer from the lone pair of oxygen to the antibonding orbital of the O-H bond

CrystEngComm ◽  
2021 ◽  
Author(s):  
Sourav Roy ◽  
Dipankar Sutradhar ◽  
Michael G B Drew ◽  
Shouvik Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Charge Transfer ◽  
Lone Pair ◽  
Supramolecular Assembly ◽  
Schiff Base Complexes ◽  
Supramolecular Interactions ◽  
Antibonding Orbital ◽  
Hydronium Ion ◽  
Hydrogen Bonded

To understand the packing in a particular crystal we need to investigate the supramolecular interactions. Here we report a hydronium ion encapsulated within a dimeric assembly of two different nickel(II)...

Spontaneous resolution of a Δ/Λ-chiral-at-metal pseudo-tetrahedral Schiff-base zinc complex to a racemic conglomerate with C–H⋯O organized 41- and 43-helices

CrystEngComm ◽  
2018 ◽  
Vol 20 (33) ◽  
pp. 4724-4734 ◽  
Author(s):  
Mohammed Enamullah ◽  
Vera Vasylyeva ◽  
Mohammad Abdul Quddus ◽  
Mohammad Khairul Islam ◽  
Simon-Patrick Höfert ◽  
...  
Keyword(s):  
Schiff Base ◽  
Zinc Complex ◽  
Spontaneous Resolution ◽  
Supramolecular Interactions

Weak supramolecular interactions can be decisive!

scholarly journals Analysis of energies of halogen and hydrogen bonding interactions in the solid state structures of vanadyl Schiff base complexes

RSC Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 4789-4796 ◽  
Author(s):  
Snehasish Thakur ◽  
Michael G. B. Drew ◽  
Antonio Franconetti ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Solid State ◽  
Dft Calculations ◽  
Schiff Base Complexes ◽  
Supramolecular Interactions ◽  
Computational Tool ◽  
Hydrogen Bonding Interactions ◽  
Solid State Structures

Four vanadyl Schiff base complexes have been prepared and characterized. Energies of supramolecular interactions in complexes 1, 2 and 3 were estimated using DFT calculations, and further corroborated with NCI plot index computational tool.

Nuclearity versus oxidation state in the catalytic efficiency of MnII/III azo Schiff base complexes: computational study on supramolecular interactions and phenoxazinone synthase-like activity

2017 ◽  
Vol 41 (20) ◽  
pp. 11607-11618 ◽  
Author(s):  
Saikat Banerjee ◽  
Paula Brandão ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
Miquel Barceló-Oliver ◽  
...  
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Oxidation State ◽  
Computational Study ◽  
Catalytic Efficiency ◽  
Schiff Base Complexes ◽  
Supramolecular Interactions ◽  
Phenoxazinone Synthase

Supramolecular interactions of a mononuclear Mn(iii) and a tetranuclear Zn(ii)–Mn(ii) complexes and their comparative bio mimetic catalytic activity have been reported.

Chloranilate bridged dinuclear copper(ii) complexes: syn–anti geometry tuned by the steric factor and supramolecular interactions

CrystEngComm ◽  
2019 ◽  
Vol 21 (44) ◽  
pp. 6886-6893 ◽  
Author(s):  
Paramita Kar ◽  
Antonio Franconetti ◽  
Antonio Frontera ◽  
Ashutosh Ghosh
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Copper Complexes ◽  
Steric Factor ◽  
Supramolecular Interactions ◽  
Schiff Base Ligands ◽  
Dinuclear Copper ◽  
Hydrogen Bonding Interactions

The anti-conformation of chloranilate bridged di-copper complexes of NNO donor Schiff-base ligands is more stable than the syn-conformation, but the latter is stabilised by CH⋯π and hydrogen bonding interactions between solvent of crystallisation and chloranilate moieties.

Spin-crossover in an iron(iii) complex showing a broad thermal hysteresis

2021 ◽  
Author(s):  
Cyril Rajnák ◽  
Romana Mičová ◽  
Ján Moncoľ ◽  
Ľubor Dlháň ◽  
Christoph Krüger ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Mononuclear Complex ◽  
Hysteresis Width ◽  
Thermally Induced

A pentadentate Schiff-base ligand 3,5Cl-L2− and NCSe− form a iron(iii) mononuclear complex [Fe(3,5Cl-L)(NCSe)], which shows a thermally induced spin crossover with a broad hysteresis width of 24 K between 123 K (warming) and 99 K (cooling).

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