Chelate ring stacking interactions in the supramolecular assemblies of Zn(ii)and Cd(ii) coordination compounds: a combined experimental and theoretical study

A combined experimental and theoretical study and cytotoxicity assays of diethylaminophenyl-based Schiff base Cu(ii) and VO(iv) complexes are reported. The Cu(ii) complex shows interesting chelate ring⋯π interactions in the crystal structure.

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Unconventional DNA-relevant π-stacked hydrogen bonded arrays involving supramolecular guest benzoate dimers and cooperative anion–π/π–π/π–anion contacts in coordination compounds of Co(ii) and Zn(ii) phenanthroline: experimental and theoretical studies

New Journal of Chemistry ◽

10.1039/c9nj05727g ◽

2020 ◽

Vol 44 (11) ◽

pp. 4504-4518 ◽

Cited By ~ 4

Author(s):

Manjit K. Bhattacharyya ◽

Utpal Saha ◽

Debajit Dutta ◽

Antonio Frontera ◽

Akalesh K. Verma ◽

...

Keyword(s):

Coordination Compounds ◽

Supramolecular Assemblies ◽

Theoretical Studies ◽

Experimental And Theoretical Studies ◽

Hydrogen Bonded

Antiproliferative evaluation and supramolecular assemblies of Co(ii) and Zn(ii) coordination compounds involving cooperative anion–π and unconventional DNA-relevant π-stacked hydrogen bonded arrays.

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Lone pair⋯π interactions involving carbonyl π-systems: Experimental and theoretical study of the complexes of COF2 and COFCl with dimethyl ether

Chemical Physics ◽

10.1016/j.chemphys.2016.07.014 ◽

2016 ◽

Vol 476 ◽

pp. 1-8 ◽

Cited By ~ 3

Author(s):

Yannick Geboes ◽

Frank De Proft ◽

Wouter A. Herrebout

Keyword(s):

Dimethyl Ether ◽

Theoretical Study ◽

Lone Pair ◽

Π Interactions

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Induction of Λ-helicity in a zinc complex with an alanine-appended aminopyridine ligand

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229621006471 ◽

2021 ◽

Vol 77 (8) ◽

Author(s):

Berislav Perić ◽

Zoran Kokan ◽

Srećko I. Kirin

Keyword(s):

Zinc Complex ◽

Chelate Ring ◽

Ionic Interactions ◽

Stacking Interactions ◽

Neutral Ligand ◽

X Ray Diffraction ◽

X Ray ◽

The Third ◽

Membered Chelate Ring ◽

The Stability

The crystal structure of tris[dimethyl 5-({1-[(pyridin-2-yl-κN)carbamoyl-κO]ethyl}carbamoyl)benzene-1,3-dicarboxylate]zinc(II) dinitrate acetonitrile trisolvate, [Zn(C19H19N3O6)3](NO3)2·3CH3CN or [Zn(L)3](NO3)2·3CH3CN, (1), has been determined by single-crystal X-ray diffraction. The neutral ligand L coordinates to the Zn2+ cation in a bidentate fashion via the pyridine N atom and an amide O atom, forming a six-membered chelate ring. The Λ-helical chirality of the Zn2+ coordination sphere is induced by pendant L-alanine residues through stacking interactions between the arene groups of two coordinated ligands, assisted by a hydrogen bond between amide groups bonded to the stacked arene rings. The third ligand is coordinated to the Zn2+ cation by the same six-membered chelate ring, but in the opposite direction with respect to the analogous chelate rings of the first two coordinated ligands. Besides ionic interactions between [ZnL 3]2+ complexes and NO3 − anions, several types of hydrogen bonds and intermolecular stacking interactions contribute to the stability of the solid-state phase.

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Energetically significant anti-parallel π-stacking and unconventional anion-π interactions in phenanthroline based Ni(II) and Cu(II) coordination compounds: Antiproliferative evaluation and theoretical studies

Inorganica Chimica Acta ◽

10.1016/j.ica.2020.120082 ◽

2021 ◽

Vol 516 ◽

pp. 120082

Author(s):

Pranay Sharma ◽

Pinku Sarma ◽

Antonio Frontera ◽

Sahid Hussain ◽

Akalesh K. Verma ◽

...

Keyword(s):

Coordination Compounds ◽

Theoretical Studies ◽

Π Interactions ◽

Π Stacking

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Crystallization experiments with the dinuclear chelate ring complex di-μ-chlorido-bis[(η2-2-allyl-4-methoxy-5-{[(propan-2-yloxy)carbonyl]methoxy}phenyl-κC1)platinum(II)]

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229616015151 ◽

2016 ◽

Vol 72 (10) ◽

pp. 758-764 ◽

Cited By ~ 3

Author(s):

Chi Nguyen Thi Thanh ◽

Thong Pham Van ◽

Hai Le Thi Hong ◽

Luc Van Meervelt

Keyword(s):

Dimethyl Sulfoxide ◽

Diethyl Ether ◽

Methylene Chloride ◽

Crystal Packing ◽

Chelate Ring ◽

Anticancer Activities ◽

Π Interactions ◽

Crystallization Experiments ◽

Chloride Ligand ◽

Ring Complex

Crystallization experiments with the dinuclear chelate ring complex di-μ-chlorido-bis[(η2-2-allyl-4-methoxy-5-{[(propan-2-yloxy)carbonyl]methoxy}phenyl-κC1)platinum(II)], [Pt2(C15H19O4)2Cl2], containing a derivative of the natural compound eugenol as ligand, have been performed. Using five different sets of crystallization conditions resulted in four different complexes which can be further used as starting compounds for the synthesis of Pt complexes with promising anticancer activities. In the case of vapour diffusion with the binary chloroform–diethyl ether or methylene chloride–diethyl ether systems, no change of the molecular structure was observed. Using evaporation from acetonitrile (at room temperature), dimethylformamide (DMF, at 313 K) or dimethyl sulfoxide (DMSO, at 313 K), however, resulted in the displacement of a chloride ligand by the solvent, giving, respectively, the mononuclear complexes (acetonitrile-κN)(η2-2-allyl-4-methoxy-5-{[(propan-2-yloxy)carbonyl]methoxy}phenyl-κC1)chloridoplatinum(II) monohydrate, [Pt(C15H19O4)Cl(CH3CN)]·H2O, (η2-2-allyl-4-methoxy-5-{[(propan-2-yloxy)carbonyl]methoxy}phenyl-κC1)chlorido(dimethylformamide-κO)platinum(II), [Pt(C15H19O4)Cl(C2H7NO)], and (η2-2-allyl-4-methoxy-5-{[(propan-2-yloxy)carbonyl]methoxy}phenyl-κC1)chlorido(dimethyl sulfoxide-κS)platinum(II), determined as the analogue {η2-2-allyl-4-methoxy-5-[(ethoxycarbonyl)methoxy]phenyl-κC1}chlorido(dimethyl sulfoxide-κS)platinum(II), [Pt(C14H17O4)Cl(C2H6OS)]. The crystal structures confirm that acetonitrile interacts with the PtIIatomviaits N atom, while for DMSO, the S atom is the coordinating atom. For the replacement, the longest of the two Pt—Cl bonds is cleaved, leading to acisposition of the solvent ligand with respect to the allyl group. The crystal packing of the complexes is characterized by dimer formationviaC—H...O and C—H...π interactions, but no π–π interactions are observed despite the presence of the aromatic ring.

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