Supramolecular Interactions in Copper(II) Second Sphere Complex, [Cu(en)2(H2O)2](2-hydroxy-2-phenylacetate)2: Synthesis, Characterization, Single Crystal X-ray Structural Study, DFT, and Hirshfeld Surface Analysis

IF 1.8 3区 化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR
P. Gupta, A. Saini, P. Bansal, P. Kaur, P. Kandwal, R. K. Bera, S. Kumar
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引用次数: 0

Abstract

Novel ethylenediamine copper(II) complex, [Cu(en)2(H2O)2](2-hydroxy-2-phenylacetate)2 have been synthesized by the addition of en (ethylenediamine) to copper(II) 2-hydroxy-2-phenylacetate in methanol : water (4:1, v/v) solution. The newly synthesised complex was characterised by elemental analyses, spectroscopic techniques (UV–Vis, FT-IR,), magnetic moment, molar conductivity measurement, thermogravimetric analysis, field electron scanning microscopy (FESEM), energy dispersive X-ray spectra (EDS) which indicated the presence of ionic complex with CuN4O2 chromophore. Single-crystal X-ray structural analysis revealed that copper(II) complex crystallizes in orthorhombic crystal system with Pbca space group and cell dimensions: a = 12.0266(6) Å, b = 7.9119(3) Å, c = 26.4374(12) Å, α = β = γ = 90°. Further, single crystal structure determination divulged the existence of second sphere complex with distorted octahedral geometry. Copper(II) complex consists of cationic moiety [Cu(en)2(H2O)2]2+ and two discrete anionic moieties, 2-hydroxy-2-phenylacetate ions. Besides electrostatic forces of attraction, non-covalent interactions (hydrogen bonding and C–H···π) stitch the second sphere complex into extended three-dimensional supramolecular architecture and provide robustness to the crystal lattice. DFT investigation however displayed four coordinated distorted square planar copper(II) complex with two water molecules (at a distance < 2.593 Å) approaching the metal ion in order to provide octahedral geometry to the complex essential for packing efficiency of the crystal.

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来源期刊
Russian Journal of Inorganic Chemistry
Russian Journal of Inorganic Chemistry 化学-无机化学与核化学
CiteScore
3.10
自引率
38.10%
发文量
237
审稿时长
3 months
期刊介绍: Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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