Synthesis and characterization of an MgO-Y2O3 nanocomposite for infra-red applications

Complex of cobalt(II) with sulfisoxazole (slfs) has been synthesized in 1 : 4 mole ratio of metal to ligands in methanol, the complex formula is [Co(slfs)3(H2O)3]SO4.nH2O. The electric conductivity of the complex in methanol correspond to 1:1 electrolyte. The thermal analysis indicates that complex contain some hydrates. Magnetic Susceptibility measurements show that the complex is paramagnetic with µeff = 4,60(9) BM. Infra red spectra indicates that the primary N-H group coordinated to the center ion, it is signed by a shift of primary N-H group absorption. UV-Vis spectrum appears one peak at λ= 515,5 nm (19.342 cm-1) due to transition peak of 4T1g (F) → 4T2g (P) (ν3) overlay to transition peak of 4T1g(F) → 4A2g(F) (ν2). The value of 10 Dq (Δo) that corresponds to transition 4T1g → 4T2g (n1) is 95,29 kJ.mol-1. Cyclic voltammograms have revealed quasi reversible. The complex probably is octahedral. Keywords: cobalt(II), sulfisoxazole, complex, paramagnetic, octahedral

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Chemistry of Alkoxo Complexes, Part III *Synthesis and Characterization of Some Mono(carboxylato)mono (alkoxo)nickel(II) Complexes

Zeitschrift für Naturforschung B ◽

10.1515/znb-1979-0321 ◽

1979 ◽

Vol 34 (3) ◽

pp. 459-463 ◽

Cited By ~ 4

Author(s):

B. P. Baranwal ◽

G. K. Parashar ◽

R. C. Mehrotra

Keyword(s):

Molecular Weight ◽

Magnetic Susceptibility ◽

General Formula ◽

Synthesis And Characterization ◽

Probable Structure ◽

Equimolar Ratio ◽

Elemental Analyses ◽

Infra Red ◽

Interchange Reactions

AbstractA number of mono(carboxylato)mono(alkoxo)nickel(II) complexes of the general formula, Ni(OR)(OOCR′), (with R′ = C13H27, C15H35 and C17H35) have been synthesized (where R = Me and Pri) by the reactions of nickel methoxide and isopropoxide with the respective carboxylic acids in equimolar ratio and (where R = Et and But) by alcohol interchange reactions. A study of the molecular weight, infra-red and electronic reflectance spectra and magnetic susceptibility in addition to elemental analyses has been carried out to throw some light on the probable structure of these derivatives.

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Synthesis and Characterization of a Series of 1-Aryl-4-[Aryldiazenyl]-piperazines. Part II1. 1-Aryl-4-(2-Aryl-1-Diazenyl)-piperazines with Fluoro-, chloro-, Methyl-, Cyano- and Acetyl Substituents in The 1-Aryl Group

Open Chemistry Journal ◽

10.2174/1874842201603010042 ◽

2016 ◽

Vol 3 (1) ◽

pp. 42-55

Author(s):

Karen O’Malley ◽

Keith Vaughan

Keyword(s):

Electron Ionization Mass Spectrometry ◽

Synthesis And Characterization ◽

Ionization Mass ◽

Spectroscopic Techniques ◽

Aryl Group ◽

Resolution Electron ◽

Infra Red ◽

Nuclear Magnetic Spectroscopy ◽

Diazonium Coupling

This paper reports the synthesis and characterization of eight series of 1-aryl-4-(2-aryl-1-diazenyl)-piperazines (12 to 19). Several series of these triazenes have been synthesized by the diazotization of a primary arylamine followed by diazonium coupling with a secondary arylpiperazine . The arylpiperazines used in this study are: 1-phenylpiperazine, 1-(4-fluorophenyl-)piperazine, 1-(4-chlorophenyl-)piperazine, 1-(3,4-dichlorophenyl-)piperazine, 1-(2-methylphenyl-)-piperazine, 1-(4-acetophenyl-)-piperazine, 1-(2-pyridyl-)piperazine and 2-cyanophenylpiperazine. These new triazenes (series 12-19) have been identified with a cocktail of contemporary spectroscopic techniques, notably infra-red and nuclear magnetic spectroscopy, supported by high resolution electron ionization mass spectrometry.

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Synthesis and characterization of novel substituted spiro[isobenzofuran-1(3H), 9’-xanthene]-3-ones

Journal of the Serbian Chemical Society ◽

10.2298/jsc0507931p ◽

2005 ◽

Vol 70 (7) ◽

pp. 931-936 ◽

Cited By ~ 4

Author(s):

Sachin.V. Patel ◽

Manish Patel ◽

Rangan Patel

Keyword(s):

Melting Point ◽

Nmr Spectroscopy ◽

Benzoic Acid ◽

Synthesis And Characterization ◽

Acidic Media ◽

Melting Point Determination ◽

Infra Red ◽

Point Determination ◽

Uv Visible

The ketoacid, 2-(4-diethylamino-2-hydroxybenzoyl)benzoic acid, prepared from N,N-diethyl-m-aminophenol and phthalic anhydride, was reacted with various substituted 3-[6-methoxybenzothiazol-2-yl]-4(3H)-quinazolinones in the presence of a dehydration condensing agent to afford novel spiro[isobenzofuran-1(3H),9?-xanthene]-3-ones. The benzothiazolyl quinazolinones were synthesized by reacting 2-amino-6-methoxybenzothiazole with various substituted benzoxazinones. All compounds were characterized by melting point determination, elemental analysis, infra- red spectroscopy NMR-spectroscopy and UV-visible sprectroscopy. All the fluoran compounds are colourless or nearly colourless and produce colour in the presence of acidic media.

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SYNTHESIS AND CHARACTERIZATION OF COMPLEX DIAQUADIHYDANTOIN NICKEL(II) SULFAT MONOHIDRAT)

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.10.2.534.137-148 ◽

2016 ◽

Vol 10 (2) ◽

pp. 137

Author(s):

Sentot Budi Rahardjo ◽

Surya Dewi Marliyana ◽

Nur Asih Siwi Wulandari

Keyword(s):

Thermal Analysis ◽

Atomic Absorption ◽

Absorption Spectroscopy ◽

Atomic Absorption Spectroscopy ◽

Functional Group ◽

Synthesis And Characterization ◽

Infra Red ◽

Thermal Analyser ◽

Differential Thermal Analyser

The purpose of the research is to find out the synthesis, formula and characteristic of complex of Nickel(II) with hydantoin (hyd). Complex of nickel(II) with hydantoin have been synthesized in 1 : 1 mole ratio of metal to ligan in methanol.The formula of complex which are predicted from analysis of % Ni in complex by Atomic Absorption Spectroscopy (AAS) is Ni(hyd)2(H2O)3.SO4. Ratio of cation and anion of complex is measured by conductivitymeter correspond to 1: 1. The thermal analysis is determined by Differential Thermal Analyser (DTA) indicate that complex contain some hydrate, thus possibility formula of complex is [Ni(hyd)2(H2O)2]SO4.H2O (Diaquadihydantoinnikel(II) sulfat monohidrat). Data of infra red spectra show a shift of N-H group and tertier N group 138 absorption and indicate this functional group coordinated to the center ion. Magnetic Suscepbility measurement show that the complex is paramagnetic with μeff = 3.2 BM. The UV-Vis spectra appear do to 2 transition peak on λ = 740 nm (13,513 cm-1) and 405 nm (24,691 cm-1). The peak indicate that structure of complex is octahedral with transition 3A2g→ 3T1g(P)(ν2) andtransition 3A2g → 3T1g(F)(ν3). One peak which is not appear is transition 3A2g → 3T2g (F)(ν1) which also estimate of 10 Dq (Δ0) is 103.615 kJ mol-1.

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Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Journal Of Natural Sciences And Mathematics Research ◽

10.21580/jnsmr.2017.3.1.1697 ◽

2017 ◽

Vol 3 (1) ◽

pp. 215 ◽

Cited By ~ 1

Author(s):

Wirda Udaibah ◽

Agus Priyanto

Keyword(s):

Fourier Transform ◽

Calcination Temperature ◽

Sol Gel ◽

Structure Characterization ◽

Synthesis And Characterization ◽

Infra Red ◽

Dendrocalamus Asper ◽

Bamboo Leaf Ash ◽

Bond Peak

The Research about Synthesis and Characterization of SiO2 have been worked. We have synthesized Silica from “petung”bamboo leaf ash as SiO2 source. This step used sol gel methode. SiO2 were characterized by Fourier Transform Infra Red (FTIR) to investigated the stucture andX-Ray Diffaction to know about structure and crystallinity. FTIR spectra show peak at 617,22 cm-1 area that spesific for Si-H bond, peak at 786,96 cm-1and 1095,57 cm-1 area specific for Si-O-Si bonds. Difractogram of SiO2 show that there are peak at 2θ 21,99; 31,67 and 38,88 were specific for SiO2 that calcinated at 800oC, while for SiO2 that calcinated at 400oC there were no peak at 2θ 31,67 dan 38,88. That peaks not shown may be because low crystallinity of SiO2 that calcinated at 400oC. Calcination temperature greatly affects the crystallinity of SiO2.©2017 JNSMR UIN Walisongo. All rights reserved.

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SYNTHESIS AND CHARACTERIZATION OF COMPLEX DIAQUADIHYDANTOIN NICKEL(II) SULFAT MONOHIDRAT)

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.v10i2.534 ◽

2016 ◽

Vol 10 (2) ◽

pp. 137

Author(s):

Sentot Budi Rahardjo ◽

Surya Dewi Marliyana ◽

Nur Asih Siwi Wulandari

Keyword(s):

Thermal Analysis ◽

Atomic Absorption ◽

Absorption Spectroscopy ◽

Atomic Absorption Spectroscopy ◽

Functional Group ◽

Synthesis And Characterization ◽

Infra Red ◽

Thermal Analyser ◽

Differential Thermal Analyser

The purpose of the research is to find out the synthesis, formula and characteristic of complex of Nickel(II) with hydantoin (hyd). Complex of nickel(II) with hydantoin have been synthesized in 1 : 1 mole ratio of metal to ligan in methanol.The formula of complex which are predicted from analysis of % Ni in complex by Atomic Absorption Spectroscopy (AAS) is Ni(hyd)2(H2O)3.SO4. Ratio of cation and anion of complex is measured by conductivitymeter correspond to 1: 1. The thermal analysis is determined by Differential Thermal Analyser (DTA) indicate that complex contain some hydrate, thus possibility formula of complex is [Ni(hyd)2(H2O)2]SO4.H2O (Diaquadihydantoinnikel(II) sulfat monohidrat). Data of infra red spectra show a shift of N-H group and tertier N group 138 absorption and indicate this functional group coordinated to the center ion. Magnetic Suscepbility measurement show that the complex is paramagnetic with μeff = 3.2 BM. The UV-Vis spectra appear do to 2 transition peak on λ = 740 nm (13,513 cm-1) and 405 nm (24,691 cm-1). The peak indicate that structure of complex is octahedral with transition 3A2g→ 3T1g(P)(ν2) andtransition 3A2g → 3T1g(F)(ν3). One peak which is not appear is transition 3A2g → 3T2g (F)(ν1) which also estimate of 10 Dq (Δ0) is 103.615 kJ mol-1.

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Synthesis and Characterization of Silica-Chitosan Porous Hybrids for Tissue Engineering

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.361-363.967 ◽

2007 ◽

Vol 361-363 ◽

pp. 967-970 ◽

Cited By ~ 6

Author(s):

Emmerson M. Reis ◽

Wander L. Vasconcelos ◽

Herman S. Mansur ◽

Marivalda Pereira

Keyword(s):

Sol Gel ◽

Synthesis And Characterization ◽

Polymer Content ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process ◽

Infra Red ◽

Hybrid Scaffolds ◽

Large Pore Size

A variety of types of organic polymers have been employed in the synthesis of hybrids with silica. In this work the sol-gel method was used for preparation of macroporous 3D hybrid scaffolds based on silica and chitosan in various compositions (10, 20 and 30% wt). The hybrids were analyzed by Scanning Electron Microscopy (SEM), X-ray Diffraction (DRX) and Infra-red Spectroscopy (FTIR) and the effect of addition of the polymer was evaluated. The foams obtained by sol-gel process were appropriate to produce hybrids based on chitosan-silica and showed large pore size distribution and porosity, except for hybrids with higher polymer content. The FTIR spectroscopy showed a band relative to Si-O-C bond that was also found to increase with the increasing the amounts of chitosan in the hybrid. This fact can suggest an interaction between the organic-inorganic phases in the material and provide new insights on the advantages of chitosansilica hybrid materials produced via sol-gel methodology.

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