Synthesis and Characterization of a New Class of μ3-OH-Bridged Trimers That Contain Octahedrally Coordinated Divalent Metal Ions Bridged by Three Acetate Ligands and a Unique Catecholate Ligand. Solid State Molecular Structures of the [(py)5MII3(OAc)3(μ3-OH)((cat)] Complexes (M = Mn(II), Fe(II), Co(II), Ni(II))

1996 ◽  
Vol 35 (10) ◽  
pp. 2721-2722 ◽  
Author(s):  
R. A. Reynolds ◽  
W. O. Yu ◽  
W. R. Dunham ◽  
D. Coucouvanis
Keyword(s):  
Solid State ◽  
Metal Ions ◽  
Divalent Metal ◽  
Molecular Structures ◽  
Synthesis And Characterization ◽  
Divalent Metal Ions ◽  
New Class

Synthesis and characterization of bis(imino)pyridine complexes of divalent Mg and Zn

2016 ◽  
Vol 45 (14) ◽  
pp. 5989-5998 ◽  
Author(s):  
Thomas W. Myers ◽  
Tobias J. Sherbow ◽  
James C. Fettinger ◽  
Louise A. Berben
Keyword(s):  
Electronic Structure ◽  
Metal Ions ◽  
Torsion Angle ◽  
Divalent Metal ◽  
Synthesis And Characterization ◽  
Divalent Metal Ions ◽  
Structural Comparison ◽  
Bond Lengths ◽  
Pyridine Complexes

The synthesis and electronic structure of bis(imino)pyridine (I2P) complexes of the divalent metal ions, Zn(ii) and Mg(ii) are reported, and a correlation between the ligand Cim–Cpy bond lengths with the ligand torsion angle is described. Structural comparison with a new complex of Al(iii) and previously reported Al(iii) complexes is included.

scholarly journals Synthesis and characterization of ligands derived 2-hydroxy-1- naphthaldehyde and their complexes with divalent metal ions (Mn+2, Fe+2, Ni +2)

2018 ◽  
Vol 16 (37) ◽  
pp. 79-87
Author(s):  
Shahinaz A. Hamad Al-Dabbagh
Keyword(s):  
Metal Ions ◽  
Condensation Reaction ◽  
Divalent Metal ◽  
Octahedral Geometry ◽  
Synthesis And Characterization ◽  
Divalent Metal Ions ◽  
Schiff Base Ligands ◽  
Tetrahedral Geometry ◽  
Ft Ir

In this work, Schiff base ligands L1: N, N-bis (2-hydroxy-1-naphthaldehyde) hydrazine, L2: N, N-bis (salicylidene) hydrazine, and L3:N –salicylidene- hydrazine were synthesized by condensation reaction. The prepared ligands were reacted with specific divalent metal ions such as (Mn2+, Fe2+, Ni2+) to prepare their complexes. The ligands and complexes were characterized by C.H.N, FT-IR, UV-Vis, solubility, melting point and magnetic susceptibility measurements. The results show that the ligands of complexes (Mn2+, Fe2+) have octahedral geometry while the ligands of complexes (Ni2+) have tetrahedral geometry.

scholarly journals Synthesis and Characterization of a NewN"-[(1Z,2E)-2- (Hydroxyimino)-1-phenylpropylidene]-N"'-[(1E)-phenylmethylene]thiocarbonohydrazide and its Complexes with Co(II), Ni(II) and Cu(II)

2010 ◽  
Vol 7 (2) ◽  
pp. 409-418
Author(s):  
Dilip C. Sawant ◽  
A. Venkatchallam ◽  
R. G. Deshmukh
Keyword(s):  
Electrical Conductivity ◽  
Metal Ions ◽  
Metal Complexes ◽  
Magnetic Measurements ◽  
Divalent Metal ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
Divalent Metal Ions ◽  
First Time

Synthesis and characterization of a newN"-[(1Z,2E)-2- (Hydroxyimino)-1-phenylpropylidene]-N"'-[(1E)-phenylmethylene]thiocarbonohydrazide and its metal complexes with Co(II), Ni(II) and Cu(II) metal ions. The ligand synthesis and characterization is reported for first time. The complexes of divalent metal ions were synthesized in 1:2 molar proportion using ethanol as solvent. The ligands as well as its metal complexes were characterized using various physicochemical techniques such as elemental analysis, spectral and magnetic measurements and electrical conductivity measurements in case of the metal complexes only. The data for the metal complexes reveals that they may be represented by ML2. The metal complexes show interesting features of coordination structure.

Synthesis and Characterization of Ruteno-Cuprates by Solid State Reactions

2008 ◽  
Vol 591-593 ◽  
pp. 644-648
Author(s):  
J.M.A. Gimenez ◽  
Carlos Roberto Grandini ◽  
A.R. Jurelo
Keyword(s):  
Solid State ◽  
Low Temperatures ◽  
Magnetic Transition ◽  
Solid State Reactions ◽  
Synthesis And Characterization ◽  
Superconducting Properties ◽  
New Class ◽  
Preparation Conditions ◽  
Magnetic States

A new class of hybrid ruteno-cuprates – such as Ru-1212 and Ru-1222 – was discovered in 1995 by Bauerfeind and collaborators. These materials present superconducting and magnetic states at low temperatures, an atypical duality in other superconductors. The superconductivity is more easily observed in Ru-1222, while Ru-1212 is a more problematic case, due to the strong effects of the preparation details in its superconducting properties, becoming the material superconductor or not. Ru-1212 presents a critical temperature that can vary between 0 and 46 K, depending on the preparation conditions, and a temperature of magnetic transition of around 132 K. The samples were prepared through solid state reactions, by using a mixture of high purity powders, followed by calcination and sinterization in the nitrogen and oxygen atmospheres. This paper shows the preparation process of Ru-1212 samples, followed by their structural and magnetic characterization.

scholarly journals Synthesis and Characterization of New Cyclam-Based Zr(IV) Alkoxido Derivatives

Reactions ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 323-332
Author(s):  
Luis G. Alves ◽  
Ana M. Martins
Keyword(s):  
Carbon Dioxide ◽  
Solid State ◽  
Molecular Structures ◽  
Synthesis And Characterization ◽  
Metal Centers ◽  
Trigonal Prismatic

In this study, new mono- and di-alkoxido zirconium(IV) complexes supported by tetradentate dianionic cyclam ligands were synthesized and characterized. These compounds were obtained by reaction of the parent Zr(IV) dichlorido species with one or two equivalents of the corresponding lithium alkoxido, whereas (3,5-Me2Bn2Cyclam)Zr(OPh)2 was prepared by protonolysis of the orthometallated species (3,5-Me-C6H4CH2)2Cyclam)Zr with phenol. The solid-state molecular structures of (Bn2Cyclam)ZrCl(OtBu) and (4-tBuBn2Cyclam)Zr(OiPr)2 show a trigonal prismatic geometry around the metal centers. (Bn2Cyclam)Zr(SPh)(OtBu) and (Bn2Cyclam)ZrMe(OiPr) were prepared by reaction of (Bn2Cyclam)ZrCl(OR) (R = iPr, tBu) with one equivalent of LiSPh or MeMgCl, respectively. The reactions of (Bn2Cyclam)Zr(OiPr)2 and (4-tBuBn2Cyclam)Zr(OiPr)2 with carbon dioxide suggested the formation of species that correspond to the addition of four CO2 molecules.

scholarly journals Synthesis and Characterization of Two New Coordination Polymers Constructed from Azobenzene-4, 4′-Dicarboxylic Acid with Zinc (Ii) and Cd (Ii) 2, 2′-Bipyridine

2018 ◽  
Vol 7 ◽  
pp. 39-42
Author(s):  
Pramod Kumar Yadav
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Dicarboxylic Acid ◽  
Coordination Polymers ◽  
Molecular Structures ◽  
Metal Coordination ◽  
Synthesis And Characterization ◽  
Metal Coordination Polymers

Two transition metal coordination polymers [Zn(4,4′-ADA)(bpy)]n (1) and [Cd(4,4′-ADA)(bpy)(H2O)2]n (2) have been assembled from azobenzene-4,4′- dicarboxylic acid (H2ADA) with the help of 2,2′-bipyridine (bpy) ligand. The different molecular structures for complexes 1 and 2 formed from the same ligand (H2ADA) reveals the fact that organic linkers display different coordination preferences at different metal ions.

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