scholarly journals Dithiacrown Ether Substituted Porphyrazines:  Synthesis, Single-Crystal Structure, and Control of Aggregation in Solution by Complexation of Transition-Metal Ions

1996 ◽  
Vol 35 (4) ◽  
pp. 959-969 ◽  
Author(s):  
Cornelus F. van Nostrum ◽  
Franciscus B. G. Benneker ◽  
Hugo Brussaard ◽  
Huub Kooijman ◽  
Nora Veldman ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Metal Ions ◽  
Single Crystal ◽  
Transition Metal Ions ◽  
Single Crystal Structure ◽  
And Control

The crystal chemistry of (Mn3 +, Fe3+)-substituted andalusites (viridines and kanonaite), (Al1−x−yMn3x+Fe3y+)2 (OǀSiO4): crystal structure refinements, Mössbauer, and polarized optical absorption spectra

1981 ◽  
Vol 155 (1-2) ◽  
Author(s):  
I. Abs-Wurmbach ◽  
K. Langer ◽  
F. Seifert ◽  
E. Tillmanns
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Optical Absorption ◽  
Metal Ions ◽  
Crystal Chemistry ◽  
Mixed Crystal ◽  
Transition Metal Ions ◽  
Structure Type ◽  
Optical Absorption Spectra ◽  
Distorted Octahedral

AbstractThe crystal chemistry of viridines and kanonaite, (AlThe structure refinements reveal that the transition metal ions substitute for Al almost exclusively in the distorted octahedral Al(l) site of the andalusite structure type within the entire mixed crystal series. This is independently proven by the Mössbauer results for

scholarly journals Synthesis and Characterization of Bioactive Acylpyrazolone Sulfanilamides and Their Transition Metal Complexes: Single Crystal Structure of 4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one Sulfanilamide

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Omoruyi G. Idemudia ◽  
Alexander P. Sadimenko ◽  
Anthony J. Afolayan ◽  
Eric C. Hosten
Keyword(s):  
Crystal Structure ◽  
Schiff Base ◽  
Transition Metal ◽  
Metal Complexes ◽  
Single Crystal ◽  
Transition Metal Complexes ◽  
Antimicrobial Agents ◽  
Biological Activities ◽  
Condensation Reaction ◽  
Single Crystal Structure

Two Schiff base ligands Ampp-Sn1and Bmpp-Sn2, afforded by a condensation reaction between sulfanilamide and the respective acylpyrazolone carbonyl precursors, their Mn(II), Co(II), Ni(II), and Cu(II) complexes prepared by the reaction of ligands and corresponding metal salts in aqueous solutions, were synthesized and then characterized by both analytical and spectroscopic methods, in a view to developing new improved bioactive materials with novel properties. On the basis of elemental analysis, spectroscopic and TGA results, transition metal complexes, with octahedral geometry having two molecules of the bidentate keto-imine ligand each, have been proposed. The single crystal structure of Bmpp-Sn according to X-ray crystallography showed a keto-imine tautomer type of Schiff base, having three intramolecular bonds, one short N2⋯H2⋯O3 hydrogen bond of 1.90 Å and two long C13⋯H13⋯O2 and C32⋯H32⋯O3 hydrogen bonds of 2.48 Å. A moderate to low biological activities have been exhibited by synthesized compounds when compared with standard antimicrobial agents on screening the synthesized compounds againstStaphylococcus aureus,Bacillus pumilus,Proteus vulgaris, andAeromonas hydrophilafor antibacterial activity and against free radical 1, 1-diphenyl-2-picryl-hydrazyl (DPPH) for antioxidant activity.

Diffusion of Transition Metal Ions in Single‐Crystal MgO

1962 ◽  
Vol 36 (11) ◽  
pp. 2917-2922 ◽  
Author(s):  
B. J. Wuensch ◽  
T. Vasilos
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Single Crystal ◽  
Transition Metal Ions

Crystal-Structure of Bis(2,2'-6',2'-terpyridine)manganese(II) Bis(triiodide) [Mn(terpy)2](I3)2

1991 ◽  
Vol 44 (2) ◽  
pp. 303 ◽  
Author(s):  
R Bhula ◽  
DC Weatherburn
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Metal Ions ◽  
Coordination Sphere ◽  
Metal Ion ◽  
Transition Metal Ions ◽  
Triclinic Space Group ◽  
X Ray ◽  
X Ray Crystallography ◽  
Distorted Octahedral

The crystal structure of [ Mn ( terpy )2](I3)2( terpy = 2,2°:6°,2°-terpyridene) has been determined by X-ray crystallography. The crystals are triclinic, space group Pī , a 9.357(4), b 8.600(2), c 24.531(8) Ǻ, α 93.64(2), B 95.58(3), γ 91.52(2)°, Z 2, V 1960(1)Ǻ3. The structure has been refined to a residual R of 0.065 (Rw 0.070). The coordination sphere of the metal ion is distorted octahedral with each terpy ligand coordinated in a meridional fashion. The structure is compared with those of other M( terpy )2n+ complexes formed by first-row transition metal ions.

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