Coordination compounds of manganese(II) with Tetrahydro-1,4-thiazin-3-one and Thiazolidine-2-thione

1976 ◽  
Vol 29 (3) ◽  
pp. 543 ◽  
Author(s):  
C Preti ◽  
G Tosi
Keyword(s):  
Field Theory ◽  
Infrared Spectroscopy ◽  
Oxygen Atom ◽  
Coordination Compounds ◽  
Metal Ion ◽  
Magnetic Moments ◽  
Crystal Field Theory ◽  
Characterization Studies ◽  
Metal Ligand

Synthetic and characterization studies of manganese(11) complexes with tetrahydro-l,4-thiazin-3-one (tht) and thiazolidine-2-thione (ttz) are reported. The methods used for the characterization of the compounds include elementary analyses, molar conductances, magnetic moments and electronic and infrared spectroscopy. Assignments for the metal-ligand modes have also been made; the tht derivatives are coordinated through the oxygen atom, while the ttz derivatives are nitrogen-bonded in all the complexes. By use of infrared spectroscopy it has been possible distinguish whether or not the polyanions present in these derivatives are coordinated to the metal ion or are present as free ions.The wavelengths of the principal absorption peaks have been accounted for quantitatively in terms of the crystal field theory. The values of B and C obtained are significantly lower than the corresponding value for the free gaseous ion.

Coordination Compounds of Some 3d-Transition Metal Ions with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)- thiosemicarbazide

2008 ◽  
Vol 59 (7) ◽  
Author(s):  
Madalina Angelusiu ◽  
Maria Negoiu ◽  
Stefania-Felicia Barbuceanu ◽  
Tudor Rosu
Keyword(s):  
Coordination Compounds ◽  
Magnetic Moments ◽  
Thermo Gravimetric Analysis ◽  
Electronic Spectroscopy ◽  
Transition Metal Ions ◽  
Synthesis And Characterization ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
New Compounds

The paper presents the synthesis and characterization of Cu(II), Co(II), Ni(II), Cd(II), Zn(II) and Hg(II) complexes with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)-thiosemicarbazide. The new compounds were characterized by IR, EPR, electronic spectroscopy, magnetic moments, thermo-gravimetric analysis and elemental analysis.

scholarly journals Synthesis and characterization of Ni(II), Cu(II) and Co(III) complexes with polyamine-containing macrocycles bearing an aminoethyl pendant arm

2004 ◽  
Vol 69 (8-9) ◽  
pp. 641-649 ◽  
Author(s):  
Fouzia Rafat ◽  
M.Y. Siddiqi ◽  
K.S. Siddiqi
Keyword(s):  
Metal Ion ◽  
Magnetic Moments ◽  
Carbon Chain ◽  
Macrocyclic Complex ◽  
Synthesis And Characterization ◽  
Epr Spectrum ◽  
Pendant Arm ◽  
Octahedral Environment ◽  
Electrical Conductivities

Reaction of [M(ppn)2]X2 (where M = Cu(II), Ni(II), Co(II) and ppn = 1,3-diaminopropane) with formaldehyde and ethylenediamine in methanol results in the ready formation of a 16-membered macrocyclic complex. The complexes were characterized by elemental analysis, IR, EPR, electronic spectral data magnetic moments and conductance measurements. The Cu(II), Ni(II) and Co(III) complexes are coordinated axially with both pendant groups of the hexadentate macrocycle. These pendant donors are attached to the macrocycle by a carbon chain. The electrical conductivities of the Cu(II) and Ni(II) chelates indicated them to be 1:2 electrolytes whilst those of Co(III) is a 1:3 electrolyte in DMSO. The EPR spectrum of the copper complex exhibited G at 3.66, which indicates a considerable exchange interaction in the complex. Spectroscopic evidence suggests that in all of the complexes the metal ion is in an octahedral environment.

scholarly journals XPS-Characterization of Heterometallic Coordination Compounds with Optically Active Ligands

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Yenny Ávila-Torres ◽  
Lázaro Huerta ◽  
Noráh Barba-Behrens
Keyword(s):  
Photoelectron Spectroscopy ◽  
Coordination Compounds ◽  
Metal Ion ◽  
Magnetic Behaviour ◽  
Optically Active ◽  
Triangular Array ◽  
Antiferromagnetic Coupling ◽  
Xps Characterization ◽  
Alcohol Derivative

The heterometallic optical complexes [Cu2Co(S,S(+)cpse)3(H2O)3]·4H2O (1) and [Cu2Ni(S,S(+)cpse)3(H2O)3]·10H2O (2) were obtained from the mononuclear copper(II) compound by the addition of nickel(II) or cobalt(II) chlorides, where (H2cpse) is the acetyl amino alcohol derivative N-[2-hydroxy-1(R)-methyl-2(R)-phenylethyl]-N-methylglycine. In comparison with the homotrinuclear copper(II) compound [Cu3(S,S(+)cpse)3(H2O)3]·8H2O reported previously, the substitution of a copper(II) atom by one cobalt(II) ion gave place to a heterotrinuclear compound1, which presents ferromagnetic-antiferromagnetic behaviour. When substituting a copper(II) by a nickel(II) ion, the trinuclear compound2showed an antiferromagnetic coupling. The magnetic behaviour of the heterotrinuclear compounds is driven by the nature of the metal ion which was introduced in the copper(II) triangular array. The ligand and its coordination compounds were characterized by IR, UV-Vis-NIR. Their chemical was confirmed by photoelectron spectroscopy (XPS).

scholarly journals Antibacterial, Cytotoxic Studies and Characterization of Some Newly Synthesized SymmetricalN3,N3′-Bis(disubstituted)isophthalyl-bis(thioureas) and Their Cu(II) and Ni(II) Complexes

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Muhammad Jamil ◽  
Muhammad Zubair ◽  
Muhammad Asim Farid ◽  
Umer Rashid ◽  
Nasir Rasool ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Nmr Spectroscopy ◽  
Magnetic Moments ◽  
Cytotoxic Activities ◽  
Spectral Measurements ◽  
Neutral Complex ◽  
H Nmr ◽  
Cytotoxic Studies ◽  
C Nmr

A series of some novelN3,N3′-bis(disubstituted)isophthalyl-bis(thioureas) compounds with general formula [C6H4·{CONHCSNHR}2], where R = 2-ClC6H4S (L1), 3,5-(Cl)2C6H3(L2), 2,4-(Cl)2C6H3(L3), 2,5-(Cl)2C6H3(L4), and 2-NH2C6H4(L5), and their Cu(II) and Ni(II) complexes (C1–C10) have been synthesized. These compounds (L1–L5) and their metal(II) complexes (C1–C10) have been characterized by elemental analysis, infrared spectroscopy,1H NMR and13C NMR spectroscopy, magnetic moments, and electronic spectral measurements. The ligands are coordinated to metal atom in a bidentate pattern producing a neutral complex of the type [ML]2. These compounds (L1–L5) and their metal(II) complexes (C1–C10) were also screened for their antibacterial and cytotoxic activities.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF COBALT (III) COMPLEX OF SALICYLALDEHYDE BENZOYL HYDRAZONE

2017 ◽  
Vol 22 (1) ◽  
pp. 132-136
Author(s):  
Sabita Shrestha
Keyword(s):  
Metal Ion ◽  
Cobalt Complex ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Water Molecules ◽  
Conductance Measurement ◽  
Infrared Spectral ◽  
Metal Ligand ◽  
Benzoyl Hydrazone

Cobalt Complex of type [Co(Hsbh)2(NO3)(H2O)]. 3H2O was synthesized and characterized by different analytical procedures, molar conductance, infrared and electronic spectral studies. The complex was found to be 1:2 metal ligand ratio. Molar conductance measurement shows non electrolyte nature of complex. Dehydration studies indicate the presence of coordinated as well as lattice water molecules. Infrared spectral studies indicate that ligand undergo keto enol tautomerism and bond to the metal ion via enolic oxygen and NH2 group. The electronic spectrum shows octahedral geometry around central cobalt (III) atom.Journal of Institute of Science and TechnologyVolume 22, Issue 1, July 2017, page: 132-136

scholarly journals Synthesis, Physical Characterization of M(III) Transition Metal Complexes Derived from Thiodihydrazide and 5-tert-Butyl-2-hydroxy-3-(3-phenylpent-3-yl) Benzaldehyde

2012 ◽  
Vol 9 (4) ◽  
pp. 2119-2127 ◽  
Author(s):  
Gajendra Kumar ◽  
Rajeev Johari ◽  
Shoma Devi
Keyword(s):  
Schiff Base ◽  
Metal Complexes ◽  
Schiff Base Ligand ◽  
Metal Ion ◽  
Magnetic Measurements ◽  
Metal Salt ◽  
Magnetic Moments ◽  
Metal Centers ◽  
H Nmr

A Schiff base ligand was synthesized by reacting 5-tert-butl-2-hydroxy-3-(3-phenylpent-3-yl) benzaldehyde and thiodihydrazide (2:1) and a series of metal complexes with this new ligand were synthesized by reaction with Cr (III), Mn (III), and Fe (III) metal salt in methanolic medium. The Schiff base ligand and its complexes have been characterized with the help of elemental analysis, conductance measurements, magnetic measurements and their structure configuration have been determined by various spectroscopic (electronic, IR,1H NMR,13C NMR, GCMS) techniques. Electronic and magnetic moments of the complexes indicate that the geometries of the metal centers were octahedral. IR spectral data suggest that ligand behaves as a tetradentate ligand with ONNO donor sequence towards the metal ion.

scholarly journals Synthesis, Spectroscopy, and Magnetic Characterization of Copper(II) and Cobalt(II) Complexes with 2-Amino-5-bromopyridine as Ligand

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Raziyeh Arab Ahmadi ◽  
Farshideh Hasanvand ◽  
Giuseppe Bruno ◽  
Hadi Amiri Rudbari ◽  
Saeid Amani
Keyword(s):  
Metal Ion ◽  
Magnetic Moments ◽  
Diffraction Method ◽  
Liquid Nitrogen Temperature ◽  
Esr Spectra ◽  
X Ray Diffraction ◽  
Absorption Bands ◽  
Magnetic Characterization ◽  
One Step

The synthesis, spectroscopic, and magnetic characterization of two new copper(II) and cobalt(II) complexes are described. Both two compounds have the general formula [M(L)2(Cl)2], in which L= 2-amino-5-bromopyridine. These complexes were prepared in one-step synthesis and characterized by elemental analysis, FTIR, UV-Vis, and EPR spectroscopy. Moreover, the single crystal structure of complex (1) was studied by the X-ray diffraction method. This compound consists of mononuclear units consisting of two ligands linked to metal via the nitrogen of pyridine ring. The UV-Vis spectra of copper(II) and cobalt(II) complexes show three and five absorption bands, respectively, attributed to the d-d transition of the metal ion, ligand → metal charge transfer, and π→π∗ or n→π∗ transitions of the ligand. The FTIR spectra show MN2Cl2 vibrations at 500–300 cm−1. The complexes show room temperature magnetic moments of 1.78 BM and 4.12 BM for Cu(II) and Co(II), respectively. The X-band electron spin resonance (ESR) spectra of Cu(II) complex in DMF or DMSO frozen at liquid nitrogen temperature show the typical ΔMS=±1 transition.

scholarly journals Worthwhile Relevance of Infrared Spectroscopy in Characterization of Samples and Concept of Infrared Spectroscopy-Based Synchrotron Radiation

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Ayodele Temidayo Odularu
Keyword(s):  
Infrared Spectroscopy ◽  
Synchrotron Radiation ◽  
Coordination Compounds ◽  
Electromagnetic Spectrum ◽  
Purity Determination ◽  
History Of ◽  
Pharmaceutical Industries ◽  
Chemical Products

The study explores the nitty-gritty of infrared spectroscopy. Firstly, the review gives a concise history of infrared discovery and its location in the electromagnetic spectrum. Secondly, the infrared spectroscopy is reported for its mechanism, principles, sample preparation, and application for absence and presence of functional groups determination in both ligands and coordination compounds. Thirdly, it helps in purity determination of unknown samples. Additional studies regarding this study entail infrared spectroscopy-based synchrotron radiation. It serves as a giant microscope to give detailed information of samples under investigation compared to the conventional infrared instrument. Infrared will continue to be useful to both chemical and pharmaceutical industries, in order to make chemical products and manufactured drugs put on wholesome integrity.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF COORDINATION COMPOUNDS OF 3d-METAL MALEATES WITH THIOSEMICARBAZIDE

2021 ◽  
Vol 26 (3(79)) ◽  
pp. 45-54
Author(s):  
T. V. Koksharova ◽  
T. V. Mandzii ◽  
A. Yu. Kovalyov ◽  
D. V. Kramarenko ◽  
T. Yu. Brazhnik ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Elemental Analysis ◽  
Coordination Compounds ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Analysis Data ◽  
Reflectance Spectroscopy ◽  
Synthesis And Characterization ◽  
Elemental Analysis Data

Complexes of copper(II), nickel(II), cobalt(III), and zinc(II) maleates with thiosemicarbazide were synthesized. The resulting compounds were characterized by the elemental analysis data, infrared spectroscopy, diffuse reflectance spectroscopy, and thermogravimetry.

Bivalent nickel complexes of 2,4,6-Tri(2'-pyridyl)-1,3,5-triazine

1967 ◽  
Vol 20 (9) ◽  
pp. 1841 ◽  
Author(s):  
RS Vagg ◽  
RN Warrener ◽  
EC Watton
Keyword(s):  
High Spin ◽  
Coordination Compounds ◽  
Magnetic Moments ◽  
Nickel Complexes ◽  
Protonated Form ◽  
Octahedral Coordination ◽  
Additional Possibility ◽  
Metal Ligand

The preparation of a series of new coordination compounds of bivalent nickel with the terdentate ligand 2,4,8-tri(2?-pyridyl)-1,3,5-triazine and various anions (Cl-, Br-, I-, CNS-, or ClO-4) is reported. Compounds having metal-ligand ratios of 1 : 2, 1 : 1, and 2 : 1 were isolated, and in the last case the possibility of simultaneous terdentate and bidentate behaviour is discussed. In all cases the compounds formed were high-spin with magnetic moments ranging between 3.1 and 3.3 B.M. In general, octahedral coordination is proposed for these compounds. The additional possibility of five-coordination in the case of the 1 : 1 complexes is discussed, but such coordination could not be confirmed by the investigations employed. The isolation of a series of coordination compounds containing a protonated form of the ligand is also reported.

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