Characterization of a Natural Dye by Spectroscopic and Chromatographic Techniques

ABSTRACTNatural dyes have been extracted from both plants and animal to give color to textiles and handicrafts. This is the case of purple dye extracted from Justicia spicigera Schldt, an acanthaceae used as a color source since pre-Hispanic period in the Mayan area of Mexico and Central America. Spectroscopic (UV-Vis and FT-IR) and chromatographic (PY-GC/MS) techniques were employed in order to characterize some of their chemical properties. UV-VIS absorption spectra indicates a λmaxpeak at 581 nm, value associated to anthocyanins group under bathochromic effect. On the other hand, a structural characterization realized by FT-IR and Py-GC/MS indicated the presence of polar hydroxibenzoic acids and phenolic compounds which are characteristics of the molecular structure of anthocyanins.

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Structural Characterization of Heterodinuclear ZnII-LnIII Complexes (Ln = Pr, Nd) with a Ring-Contracted H2valdien-Derived Schiff Base Ligand

Journal of Chemical Crystallography ◽

10.1007/s10870-021-00891-4 ◽

2021 ◽

Author(s):

Shabana Noor ◽

Richard Goddard ◽

Fehmeeda Khatoon ◽

Sarvendra Kumar ◽

Rüdiger W. Seidel

Keyword(s):

Molecular Structure ◽

Schiff Base ◽

Structural Characterization ◽

Schiff Base Ligand ◽

Crystal And Molecular Structure ◽

X Ray ◽

X Ray Crystallography ◽

Imidazoline Ring

AbstractSynthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes with the formula [ZnLn(HL)(µ-OAc)(NO3)2(H2O)x(MeOH)1-x]NO3 · n H2O · n MeOH [Ln = Pr (1), Nd (2)] and the crystal and molecular structure of [ZnNd(HL)(µ-OAc)(NO3)2(H2O)] [ZnNd(HL)(OAc)(NO3)2(H2O)](NO3)2 · n H2O · n MeOH (3) are reported. The asymmetrical compartmental ligand (E)-2-(1-(2-((2-hydroxy-3-methoxybenzylidene)amino)-ethyl)imidazolidin-2-yl)-6-methoxyphenol (H2L) is formed from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation, resulting in a peripheral imidazoline ring. The structures of 1–3 were revealed by X-ray crystallography. The smaller ZnII ion occupies the inner N2O2 compartment of the ligand, whereas the larger and more oxophilic LnIII ions are found in the outer O2O2’ site. Graphic Abstract Synthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes (Ln = Pr, Nd) bearing an asymmetrical compartmental ligand formed in situ from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation are reported.

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Synthesis and structural characterization of Zn (II), Ag (I) and Pd (II) complexes with 2,4-diamino-5-nitroso-6-oxopyrimidine. Crystal and molecular structure of [ZnCl2 (L) (H2O)] and [Ag (NO3) (L)2]

Polyhedron ◽

10.1016/s0277-5387(98)00340-4 ◽

1999 ◽

Vol 18 (5) ◽

pp. 689-693 ◽

Cited By ~ 4

Author(s):

P Arranz-Mascarós ◽

M.L Godino-Salido ◽

R López-Garzón ◽

M.D Gutiérrez-Valero ◽

J.M Moreno

Keyword(s):

Molecular Structure ◽

Structural Characterization ◽

Crystal And Molecular Structure

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Structural Characterization of FeO–SiO2–V2O3 Slags Using Molecular Dynamics Simulations and FT-IR Spectroscopy

ISIJ International ◽

10.2355/isijinternational.isijint-2015-600 ◽

2016 ◽

Vol 56 (5) ◽

pp. 828-834 ◽

Cited By ~ 10

Author(s):

Zhen Zhang ◽

Bing Xie ◽

Wang Zhou ◽

Jiang Diao ◽

Hong-Yi Li

Keyword(s):

Molecular Dynamics ◽

Ir Spectroscopy ◽

Molecular Dynamics Simulations ◽

Structural Characterization ◽

Ft Ir ◽

Dynamics Simulations ◽

Ft Ir Spectroscopy

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Structural characterization of metal complexes of 2,6-diacetylpyridine-bis(imines). Crystal and molecular structure of dinitrato{2,6-bis[1-(phenylimino)ethyl]pyridine}copper(II)

Journal of the Chemical Society Dalton Transactions ◽

10.1039/dt9760000518 ◽

1976 ◽

pp. 518 ◽

Cited By ~ 17

Author(s):

Roderic J. Restivo ◽

George Ferguson

Keyword(s):

Molecular Structure ◽

Metal Complexes ◽

Structural Characterization ◽

Crystal And Molecular Structure

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Mineralogical and Fluid Inclusions Study of Epithermal Type Veins Intruding the Volcanic Rocks of the Kornofolia Area, Evros, NE Greece.

Bulletin of the Geological Society of Greece ◽

10.12681/bgsg.20755 ◽

2019 ◽

Vol 55 (1) ◽

pp. 202

Author(s):

Foteini Aravani ◽

Lambrini Papadopoulou ◽

Vasileios Melfos ◽

Triantafillos Soldatos ◽

Triantafillia Zorba ◽

...

Keyword(s):

Crystal Structure ◽

Fluid Inclusion ◽

Hydrothermal Alteration ◽

Fluid Inclusions ◽

Volcanic Rocks ◽

The Other ◽

Calc Alkaline ◽

Ft Ir ◽

Host Rocks

The volcanic rocks of Kornofolia area, Evros, host a number of epithermal-type veins. The host rocks are Oligocene calc-alkaline andesites to rhyo-dacites. The andesites form hydrothermal breccias and show hydrothermal alteration. The veins comprise mainly silica polymorphs such as quartz, chalcedony and three types of opal (milky white, transparent and green). Amethyst also forms in veins at the same area. Apart from the silica polymorphs, the veins are accompanied by calcite and zeolites. The main aim of this study is the characterization of the silica polymorphs. Using FT-IR analyses, variations in the crystal structure of the three opals were recognized. The green opal is found to be more amorphous than the other two types. Fluid-inclusion measurements were performed in calcite and were compared with amethyst from previous studies. The Th is between 121-175 °C and the Te between -22.9 and -22.4 °C. The salinities range from 0.9 to 4.5 wt % NaCl equiv.

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Synthesis and structural characterization of hexa-μ2-chlorido-μ4-oxido-tetrakis{[4-(phenylethynyl)pyridine-κN]copper(II)} dichloromethane monosolvate

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s2056989020015935 ◽

2021 ◽

Vol 77 (1) ◽

pp. 42-46

Author(s):

Rayya A. Al Balushi ◽

Muhammad S. Khan ◽

Md. Serajul Haque Faizi ◽

Ashanul Haque ◽

Kieran Molloy ◽

...

Keyword(s):

Molecular Structure ◽

Crystal Structure ◽

Structural Characterization ◽

Title Compound ◽

Three Dimensional ◽

Hirshfeld Surface ◽

The Core ◽

Dimensional Network ◽

Packing Arrangement

In the crystal structure of the title compound, [Cu4Cl6O(C13H9N)4]·CH2Cl2, the core molecular structure consists of a Cu4 tetrahedron with a central interstitial O atom. Each edge of the Cu4 tetrahedron is bridged by a chlorido ligand. Each copper(II) cation is coordinated to the central O atom, two chlorido ligands and one N atom of the 4-phenylethynylpyridine ligand. In the crystal, the molecules are linked by intermolecular C—H...Cl interactions. Furthermore, C—H...π and π–π interactions also connect the molecules, forming a three-dimensional network. Hirshfeld surface analysis indicates that the most important contributions for the packing arrangement are from H...H and C...H/H...C interactions.

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Molecular structure analysis and spectroscopic characterization of carbimazole with experimental (FT-IR, FT-Raman and UV–Vis) techniques and quantum chemical calculations

Journal of Molecular Structure ◽

10.1016/j.molstruc.2013.07.055 ◽

2013 ◽

Vol 1052 ◽

pp. 38-49 ◽

Cited By ~ 2

Author(s):

T. Gnanasambandan ◽

S. Gunasekaran ◽

S. Seshadri

Keyword(s):

Molecular Structure ◽

Quantum Chemical Calculations ◽

Structure Analysis ◽

Quantum Chemical ◽

Spectroscopic Characterization ◽

Ft Ir ◽

Molecular Structure Analysis ◽

Ft Raman

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Lewis-Base Adducts of Group 11 Metal(I) Compounds. LIII. Synthesis and Structural Characterization of Binuclear μ,μ'-Dichloro-, Dibromo and Diiodo-bis[(pyridine)(triphenylphosphine)copper(I)] Complexes, and Their Pyridine-4-carbonitrile Analogues

Australian Journal of Chemistry ◽

10.1071/ch9890913 ◽

1989 ◽

Vol 42 (6) ◽

pp. 913 ◽

Cited By ~ 26

Author(s):

LM Engelhardt ◽

PC Healy ◽

JD Kildea ◽

AH White

Keyword(s):

Single Crystal ◽

Structural Characterization ◽

Lewis Base ◽

The Other ◽

X Ray ◽

Structure Determinations ◽

M Phase ◽

And Inversion ◽

Iodide Single Crystal

Mixed base pyridine (py)/triphenylphosphine adducts of the copper(1) halides, CuX, have been synthesized for 1 : 1 : 1 stoichiometry for X = chloride and iodide; single-crystal X-ray structure determinations of these show them to be isomorphous and isostructural with that of the bromide recorded elsewhere, being �,�′- dihalo-bridged dimers , [(PPh3)( py )CuX2Cu( py )(PPh3)], monoclinic, C2/c, a ≈ 26.2, b ≈ 14.3, c ≈ 11 .2 � , β ≈ 95, Z = 4 dimers. The bromide has been isolated as a new monoclinic C 2/m polymorph, a 11 .279(8), b 14.268(6), c 13.858(4) �, β 109.33(6)�, Z=4 dimers, and details of its structure are also recorded. The structures of their pyridine-4-carbonitrile (pycn) analogues have also been determined and found to be also binuclear, with no cyano-copper interactions; these also are an isomorphous, isostructural series, monoclinic P21/n, a ≈ 15.4, b ≈ 8.1, c ≈ 17.9 � , β ≈ 101 �, Z = 2 dimers. In each series of dimers, one half of the dimer is crystallographically independent, the generators of the other half being twofold rotor (C2/c phase), mirror (C2/m phase) and inversion centre (P21/n phase) respectively.

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