121Sb and127I Mössbauer spectroscopic study on Sb-I hypervalent bonds in trigonal bipyramidal antimony(V) complexes

1994 ◽  
Vol 84 (1) ◽  
pp. 439-446 ◽  
Author(s):  
M. Takeda ◽  
M. Takahashi ◽  
Y. Yanagida ◽  
S. Kojima ◽  
K. -Y. Akiba ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Trigonal Bipyramidal ◽  
Hypervalent Bonds

scholarly journals NEW PHOSPHINATO ORGANO- AND HALOTIN(IV) DERIVATIVES, ADDUCTS AND COMPLEXES: SYNTHESIS AND SPECTROSCOPIC STUDY

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
SEYDOU BASSENE ◽  
MOUHAMADOU SEMBENE BOYE ◽  
MAMADOU SIDIBE ◽  
LIBASSE DIOP
Keyword(s):  
Spectroscopic Study ◽  
Spectroscopic Data ◽  
Electrostatic Interactions ◽  
Infinite Chain ◽  
Trigonal Bipyramidal

<p>Five new phosphinato derivatives, adducts and complexes have been synthesized and characterized by infrared and Mössbauer spectroscopies. Based on their spectroscopic data discrete or infinite chain structures are proposed, the phosphinate ion behaving as a bicoordinating bridging or a monocoordinating ligand, the environments around the tin (IV) centers being octahedral or trigonal bipyramidal. In Me<sub>4</sub>N(SnPh<sub>2</sub>)<sub>2</sub>(H<sub>2</sub>PO<sub>2</sub>)<sub>2</sub>Cl<sub>3 </sub>and Cl<sub>2</sub>Sn(H<sub>2</sub>PO<sub>2</sub>)<sub>2</sub>NMe<sub>4</sub>H<sub>2</sub>PO<sub>2</sub>,<strong> </strong>the cation is involved in electrostatic interactions with the anions.</p>

scholarly journals NEW PHOSPHINATO ORGANO- AND HALOTIN(IV) DERIVATIVES, ADDUCTS AND COMPLEXES: SYNTHESIS AND SPECTROSCOPIC STUDY

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
BASSENE SEYDOU ◽  
SEMBENE BOYE MOUHAMADOU ◽  
SIDIBE MAMADOU ◽  
DIOP LIBASSE
Keyword(s):  
Spectroscopic Study ◽  
Spectroscopic Data ◽  
Electrostatic Interactions ◽  
Infinite Chain ◽  
Trigonal Bipyramidal

Five new phosphinato derivatives, adducts and complexes have been synthesized and characterized by infrared and Mössbauer spectroscopies. Based on their spectroscopic data discrete or infinite chain structures are proposed, the phosphinate ion behaving as a bicoordinating bridging or a monocoordinating ligand, the environments around the tin (IV) centers being octahedral or trigonal bipyramidal. In Me4N(SnPh2)2(H2PO2)2Cl3 and Cl2Sn(H2PO2)2NMe4H2PO2, the cation is involved in electrostatic interactions with the anions.

Copper(II)-oxime complexes: A structural and spectroscopic study for a diamine dioxime ligand

1972 ◽  
Vol 25 (4) ◽  
pp. 747 ◽  
Author(s):  
JW Fraser ◽  
GR Hedwig ◽  
HKJ Powell ◽  
WT Robinson
Keyword(s):  
Spectroscopic Study ◽  
Absorption Spectra ◽  
Stability Constants ◽  
Electronic Absorption ◽  
Copper Atom ◽  
Electronic Absorption Spectra ◽  
Coordination Environment ◽  
Magnetic Susceptibilities ◽  
X Ray ◽  
Trigonal Bipyramidal

The preparations are reported for copper(11) complexes with the ligand 4,4,9,9-tetramethyl-5,s-diazadodecane-2,l-dione dioxime, LH2. Syntheses from the syn (methyl) and anti isomers of the ligand give the same products. The complexes characterized are Cu(LH2)X2,yH2O (X = Cl-, ClO4-; y = 0, 1, 2) and Cu(LH)X (X = Cl-, Br-, ClO4-). The complex Cu(LH)Br is shown by X-ray structure analysis to contain dimeric units (Cu(LH))22+ with crystallographic C2 symmetry and with the copper atom in a trigonal bipyramidal coordination environment. Stability constants for the reactions Cu2+ + LH2 ←→ Cu(LH2)2+ (log K = 13.24 � 0.05) and Cu(LH2)2+ ←→ Cu(LH)+ + H+ (log K = -3.24 � 0.08) are reported, as well as the magnetic susceptibilities, i.r. spectra, and electronic absorption spectra of the complexes.

Some Results of the Spectroscopic Study of Four Close Binary Systems of Early Spectral Types

1965 ◽  
Vol 5 ◽  
pp. 120-130
Author(s):  
T. S. Galkina
Keyword(s):  
Spectroscopic Study ◽  
Spectral Type ◽  
Spectroscopic Investigation ◽  
Binary Systems ◽  
Quantitative Information ◽  
Close Binary ◽  
Physical Parameters ◽  
Absorption And Emission ◽  
Close Binary Systems ◽  
Quantitative Estimates

It is necessary to have quantitative estimates of the intensity of lines (both absorption and emission) to obtain the physical parameters of the atmosphere of components.Some years ago at the Crimean observatory we began the spectroscopic investigation of close binary systems of the early spectral type with components WR, Of, O, B to try and obtain more quantitative information from the study of the spectra of the components.

A spectroscopic study of soil fulvic acid composition after six-year applications of urban waste compost

Agronomie ◽  
2003 ◽  
Vol 23 (8) ◽  
pp. 719-724 ◽  
Author(s):  
Giovanni Gigliotti ◽  
Alceo Macchioni ◽  
Cristiano Zuccaccia ◽  
Pier Lodovico Giusquiani ◽  
Daniela Businelli
Keyword(s):  
Spectroscopic Study ◽  
Fulvic Acid ◽  
Acid Composition ◽  
Urban Waste

A Spectroscopic Study of the Environments of Gravitational Lens Galaxies

2006 ◽  
Vol 20 ◽  
pp. 289-290
Author(s):  
I. Momcheva ◽  
K. Williams ◽  
C. Keeton ◽  
A. Zabludoff
Keyword(s):  
Spectroscopic Study ◽  
Gravitational Lens ◽  
Lens Galaxies
Sign in / Sign up

Export Citation Format

Share Document