Far-infrared spectral studies of phase changes in water ice induced by proton irradiation

1992 ◽  
Vol 401 ◽  
pp. 353 ◽  
Author(s):  
Marla H. Moore ◽  
Reggie L. Hudson
Keyword(s):  
Proton Irradiation ◽  
Far Infrared ◽  
Phase Changes ◽  
Spectral Studies ◽  
Water Ice ◽  
Infrared Spectral

2-Aminothiazole, acetylaminothiazole, dimethylhydantoin and thiohydantoin complexes of tin(IV) and titanium(IV) halides

1974 ◽  
Vol 27 (8) ◽  
pp. 1827 ◽  
Author(s):  
PP Singh ◽  
UP Shukla
Keyword(s):  
Infrared Spectra ◽  
Donor Site ◽  
Far Infrared ◽  
Carbonyl Oxygen ◽  
Spectral Studies ◽  
Infrared Spectral ◽  
Far Infrared Spectra

Complexes of the type MX4L2 (M = Sn, Ti; X = Cl, Br, I; L = dimethylhydantoin, thiohydantoin, 2-aminothiazole and 2-acetylaminothiazole) have been prepared and characterized. Infrared spectral studies indicate exocyclic nitrogen of 2:aminothiazole and carbonyl oxygen of all other ligands as the donor site. Far-infrared spectra suggest that dimethylhydantoin and 2-acetylaminothiazole complexes are trans, and 2-aminothiazole and thiohydantoin complexes are cis octahedral.

scholarly journals Synthesis and characterization of divalent metal complexes of the macrocyclic ligand derived from isatin and 1,2- diaminobenzene

2011 ◽  
Vol 76 (3) ◽  
pp. 385-393 ◽  
Author(s):  
Pal Singh ◽  
Vidhi Grover ◽  
Krishan Kumar ◽  
Kiran Jain
Keyword(s):  
Magnetic Measurements ◽  
Macrocyclic Ligand ◽  
Far Infrared ◽  
Antibacterial Activities ◽  
Molar Conductance ◽  
Spectral Studies ◽  
Distorted Octahedral Geometry ◽  
Bacterial Strains ◽  
Infrared Spectral

A novel series of complexes of the type [M(C28H18N6)X2], where M=Co(II), Ni(II), Cu(II) or Zn(II) and X=Cl-, NO3- or CH3COO-, were synthesized by template condensation of isatin and 1,2-diaminobenzene in methanolic medium. The complexes were characterized with the help of various physico-chemical techniques, such as elemental analyses, molar conductance measurements, magnetic measurements, and NMR, infrared and far infrared spectral studies. The low value of molar conductance indicates them to be non-electrolytes. Based on various studies, a distorted octahedral geometry may be proposed for all the complexes. All the synthesized macrocyclic complexes were also tested for their in vitro antibacterial activity against some pathogenic bacterial strains. The MIC values shown by the complexes against these bacterial strains were compared with those of the standard antibiotics linezolid and cefaclor. Some of the complexes showed good antibacterial activities.

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