scholarly journals Synthesis and characterization of novel oxo-bridged, trinuclear mixed-metal complexes of Cr(III) and Fe(III)

2009 ◽  
Vol 74 (4) ◽  
pp. 401-406 ◽  
Author(s):  
Mohammad Yazdanbakhsh ◽  
Iman Khosravi ◽  
Haman Tavakkoli
Keyword(s):  
Metal Complex ◽  
Infrared Spectra ◽  
Carboxylate Ligand ◽  
Synthesis And Characterization ◽  
Chlorobenzoic Acid ◽  
Mixed Metal ◽  
Elemental Analyses ◽  
New Type ◽  
Mixed Metal Complexes

Two new heterotrinuclear p-chlorobenzoates, [Fe2CrO(C7H4O2Cl)6(py)3]NO3 (1) and [Cr2FeO(C7H4O2Cl)6(py)3]NO3 (2) were prepared as nitrate salts and characterized by elemental analyses (CHN), spectroscopic (infrared, electronic) studies and atomic absorption spectroscopy. These complexes are a new type of oxo-bridged mixed-metal complex in which the carboxylate ligand is p-chlorobenzoic acid. Bridging coordination modes for the carboxylates were indicated by the presence of ?asym (M2M'O) vibrations in the infrared spectra.

Synthesis and characterization of mixed-metal complexes of Ag/Cu and W/Mo and a complex of Ag with heterocyclic thione ligands

2007 ◽  
pp. 2949 ◽  
Author(s):  
Azizolla Beheshti ◽  
William Clegg ◽  
Sophie H. Dale ◽  
Reza Hyvadi ◽  
Farzanh Hussaini
Keyword(s):  
Metal Complexes ◽  
Synthesis And Characterization ◽  
Mixed Metal ◽  
Mixed Metal Complexes

scholarly journals A trinuclear CuII complex with functionalized s-heptazine N-ligands: molecular chemistry from a g-C3N4 fragment

2015 ◽  
Vol 44 (36) ◽  
pp. 15761-15763 ◽  
Author(s):  
Lindley Maxwell ◽  
Silvia Gómez-Coca ◽  
Thomas Weyhermüller ◽  
David Panyella ◽  
Eliseo Ruiz
Keyword(s):  
Metal Complex ◽  
Synthesis And Characterization ◽  
Molecular Chemistry ◽  
New Type ◽  
Photochemical Properties

Synthesis and characterization of a new type of metal complex and N-ligand based on heptazine derivatives with appealing photochemical properties.

scholarly journals Preparation and characterization of novel oxo-centered basic p-chlorobenzoic bridging trinuclear complexes

2010 ◽  
Vol 75 (7) ◽  
pp. 929-934 ◽  
Author(s):  
Iman Khosravi ◽  
Mohammad Yazdanbakhsh
Keyword(s):  
Metal Complexes ◽  
Mixed Valence ◽  
Uv Spectra ◽  
Carboxylate Ligand ◽  
Direct Reaction ◽  
Pyridine Ligand ◽  
Chlorobenzoic Acid ◽  
Mixed Metal ◽  
Trinuclear Complexes ◽  
Mixed Metal Complexes

Three new oxo-centered trinuclear complexes, one of them a mixed-valence complex [Mn3O(C7H4O2Cl)6(Py)3]Py (1) and the others, mixed-metal complexes of [Fe2MnO(C7H4O2Cl)6(Py)3]NO3 (2) and [Fe2CoO(C7H4O2Cl)6(Py)3] (3) were synthesized by the direct reaction between metal nitrates and p-chlorobenzoic acid. These complexes were characterized by elemental analyses (CHN), atomic absorption spectroscopy and spectral (IR, electronic) studies. These are new type of oxo-bridged mixed-metal complexes in which the carboxylate ligand is pchlorobenzoic acid. The UV spectra of the complexes exhibited a strong band in the region 42,500 cm-1 which is related to the (? ? ?*) transitions of the pyridine ligand. The IR spectra of these compounds showed two strong stretching vibrations bands, indicating a bridging coordination mode of the carboxylic group of the ligand in the complexes.

Synthesis and characterization of novel azo-bridged Zn(II) and Co(II) bisphthalocyanines

2006 ◽  
Vol 10 (09) ◽  
pp. 1140-1144 ◽  
Author(s):  
Ayşegül Yazıcı ◽  
Davut Ateş ◽  
Özer Bekaroğlu ◽  
Nagao Kobayashi
Keyword(s):  
Magnetic Circular Dichroism ◽  
Nitro Compounds ◽  
Zinc Powder ◽  
Metal Salts ◽  
Synthesis And Characterization ◽  
Metal Phthalocyanines ◽  
H Nmr ◽  
Elemental Analyses ◽  
New Type

Metal phthalocyanines containing an unsymmetrically substituted nitro group were synthesized from 4-nitrophthalonitrile and the corresponding anhydrous metal salts ( Co ( OAc )2, Zn ( OAc )2) by the method of statistically mixed condensation reactions. The new type of metallo-bisphthalocyanine compounds connected by a N = N bridge was prepared from the reactions of respective nitro compounds with sodium hydroxide ( NaOH ) and activated zinc powder in a mixture of methanol ( MeOH ) and tetrahydrofuran (THF). The structures of these compounds were characterized by using 1 H NMR, IR, elemental analyses, UV-vis and magnetic circular dichroism spectroscopies.

scholarly journals Synthesis and Characterization of New Mixed-Metal Triple-Layered Perovskites, Na2La2Ti3-xRuxO10(x≤ 1.0).

2000 ◽  
Vol 12 (11) ◽  
pp. 3526-3526
Author(s):  
John N. Lalena ◽  
Alexander U. Falster ◽  
William B. Simmons ◽  
Everett E. Carpenter ◽  
Jason Wiggins ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Mixed Metal ◽  
Layered Perovskites

Synthesis and Characterization of Foamed Cassava Starch Material

2012 ◽  
Vol 262 ◽  
pp. 405-409
Author(s):  
Yang Liu ◽  
Shan Shan Li ◽  
Xin Yan Yang ◽  
Chong Xing Huang
Keyword(s):  
Reaction Time ◽  
Cassava Starch ◽  
Synthesis And Characterization ◽  
Compression Stress ◽  
Static Compression ◽  
Foaming Agent ◽  
New Type ◽  
Analysis System ◽  
Central Composite

A new-type foam composites were fabricated by baking method from a mixture of cassava starch. A central composite design was constructed using the software Statistics Analysis System 9.0 to evaluate the static compression stress of foamed material. The optimum dosages of adhesive, foaming agent, catalyst were 2.0g, 6.0g, 2.4g, respectively; reaction temperature 65°C; reaction time 16 hour.

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