The crystal structures of the ligand N -(quinolin-8-yl)pyrazine-2-carboxamide and of a tetra-nuclear copper(II) complex

Acta Crystallographica. Section E, Crystallographic Communications
Dilovan S Cati, Helen Stoeckli-Evans

Abstract

The title tridentate ligand, C14H10N4O, N-(quinolin-8-yl)pyrazine-2-carboxamide (HL1), crystallizes with three independent mol-ecules (A, B and C) in the asymmetric unit. All three mol-ecules are relatively planar (r.m.s. deviations are 0.068, 0.055 and 0.06 Å, respectively), with the NH H atom forming three-centered (bifurcated) intra-molecular N-H⋯N hydrogen bonds in each mol-ecule. There is also an intra-molecular C-H⋯O contact present in each mol-ecule, involving the benzene ring of the quinoline unit and the amide carboxamide O atom. In the crystal, the three mol-ecules stack in columns with the various mol-ecules being linked by offset π-π inter-actions [inter-centroid distances vary from 3.367 (5) to 3.589 (5) Å], forming layers parallel to the ab plane. The title complex, [Cu4(C42H44N8O16)]·2CH3OH, {hexa-μ-acetato-1:2κ2O:O';2:3κ8O:O';3:4κ2O:O'-di-methanol-1κO,2κO-bis-[N-(quinolin-8-yl)pyrazine-2-carboxamide]-1κ3N,N',N'';4κ3N,N',N''-tetra-copper(II) methanol disolvate} (I), was obtained by the reaction of HL1 with Cu(CH3CO2)2. It consists of a tetra-nuclear complex with a central tetra-kis-(μ-acetato)-dicopper paddle-wheel moiety linked on either side via bridging acetato ions to a mononuclear copper(II)-(L1) complex; it...Continue Reading

Citations

Mar 10, 2020·Acta Crystallographica. Section E, Crystallographic Communications·Dilovan S Cati, Helen Stoeckli-Evans

❮ Previous
Next ❯

Methods Mentioned

BETA
NMR

Software Mentioned

CrystalExplorer
UJOWEX
ADDSYM
CrystalExplorer17
YOMTUP
PLATON

Related Concepts

Related Feeds

Antitubercular Agents

Antitubercular agents are pharmacologic agents for treatment of tuberculosis. Discover the latest research on antitubercular agents here.

Antitubercular Agents (ASM)

Antitubercular agents are pharmacologic agents for treatment of tuberculosis. Discover the latest research on antitubercular agents here.

Related Papers

Acta Crystallographica. Section E, Crystallographic Communications
Wissem ZemamoucheAbdelmadjid Debache
Acta Crystallographica. Section E, Structure Reports Online
M KayalvizhiShriniwas D Samant
Acta Crystallographica. Section E, Crystallographic Communications
Ahmed M Abu-DiefSantiago Garcia-Granda
Acta Crystallographica. Section E, Structure Reports Online
Shahid HameedMuhammad Anwar
Acta Crystallographica. Section E, Crystallographic Communications
Peter Mangwala KimpendeLuc Van Meervelt
© 2021 Meta ULC. All rights reserved