CO-ORDINATION COMPLEXES OF GROUP (IV) HALIDES: PREPARATION AND INFRARED SPECTRA OF THE CO-ORDINATION COMPOUNDS OF TITANIUM TETRACHLORIDE, TITANIUM TETRABROMIDE, ZIRCONIUM TETRACHLORIDE, TIN TETRACHLORIDE, AND BORON TRICHLORIDE WITH ETHYL CYANOACETATE AS LIGAND

1964 ◽  
Vol 42 (5) ◽  
pp. 1079-1083 ◽  
Author(s):  
Sumer Chand Jain ◽  
Roland Rivest
Keyword(s):  
Infrared Spectra ◽  
Titanium Tetrachloride ◽  
Ethyl Cyanoacetate ◽  
Group Iv ◽  
Membered Ring ◽  
Zirconium Tetrachloride ◽  
Experimental Conditions ◽  
Boron Trichloride ◽  
Titanium Tetrabromide ◽  
Tin Tetrachloride

Co-ordination compounds between ethyl cyanoacetate and boron trichloride, titanium tetrabromide, and tetrachlorides of titanium, zirconium, and tin have been prepared. The analytical results indicate that under similar experimental conditions, 1:1 addition compounds are obtained in each case. On the basis of infrared spectra it has been postulated that the compounds obtained are six-membered ring chelates, satisfying the most common co-ordination number six for the elements of group IV.

COORDINATION COMPLEXES OF GROUP (IV) HALIDES: PREPARATION OF THE COMPLEXES OF TITANIUM TETRACHLORIDE, TITANIUM TETRABROMIDE, AND TIN TETRACHLORIDE WITH SOME THIO-, ISOTHIO-, AND ISO-CYANATE LIGANDS

1965 ◽  
Vol 43 (4) ◽  
pp. 787-791 ◽  
Author(s):  
Sumer Chand Jain ◽  
Roland Rivest
Keyword(s):  
Lewis Acid ◽  
Titanium Tetrachloride ◽  
Coordination Complexes ◽  
Group Iv ◽  
Experimental Conditions ◽  
Type Formula ◽  
Analytical Results ◽  
Ethyl Isocyanate ◽  
Titanium Tetrabromide ◽  
Tin Tetrachloride

Coordination complexes between ethyl thiocyanate, ethyl isothiocyanate, ethylene dithiocyanate, ethyl isocyanate, and tetrachlorides of titanium and tin and titanium tetrabromide have been prepared. The analytical results indicate that under different experimental conditions one can obtain compounds of the following type:[Formula: see text]where MX4 is a Lewis acid and L, L—L are mono- and bi-dentate ligands respectively. The complexes obtained are compared with the dinitrile complexes prepared by us previously (1).

COORDINATION COMPLEXES OF GROUP (IV) HALIDES: PREPARATION AND INFRARED SPECTRA OF COORDINATION COMPOUNDS OF TITANIUM TETRACHLORIDE, TITANIUM TETRABROMIDE, ZIRCONIUM TETRACHLORIDE, AND TIN TETRACHLORIDE WITH α,ω-DINITRILES AS LIGANDS

1963 ◽  
Vol 41 (9) ◽  
pp. 2130-2136 ◽  
Author(s):  
Sumer Chand Jain ◽  
Roland Rivest
Keyword(s):  
Infrared Spectra ◽  
Dicarboxylic Acids ◽  
Coordination Complexes ◽  
Bidentate Ligand ◽  
Group Iv ◽  
Experimental Conditions ◽  
Short Chain Length ◽  
Metal Atoms ◽  
Titanium Tetrabromide ◽  
Tin Tetrachloride

Coordination complexes between dinitriles of dicarboxylic acids and tetrahalides of titanium, zirconium, or tin have been prepared. The analytical results and the infrared spectra indicate that on working under different experimental conditions three types of compounds are obtained: 2MX4.L—L, MX4.L—L, and MX4.2L—L where MX4 is a Lewis acid and L—L a bidentate ligand. The compounds 2MX4.L—L are explained by the formation of halogen bridging between the two metal atoms. The compounds MX4.L—L are considered to be either coordination polymers or chelates of variable ring size and the compounds MX4.2L—L, ordinary addition compounds where no chelation takes place because of the mutual interaction of the two CN groups in a dinitrile of a short chain length.

CO-ORDINATION COMPLEXES OF TITANIUM (IV) HALIDES: II. PREPARATION AND INFRARED SPECTRA OF THE COMPLEXES OF TITANIUM TETRACHLORIDE WITH DIESTERS OF α,ω-DICARBOXYLIC ACIDS AND COMPARISON WITH ANALOGOUS COMPLEXES OF ZIRCONIUM TETRACHLORIDE AND TIN TETRACHLORIDE

1961 ◽  
Vol 39 (11) ◽  
pp. 2343-2352 ◽  
Author(s):  
Ernest Rivet ◽  
Real Aubin ◽  
Roland Rivest
Keyword(s):  
Molecular Weight ◽  
Infrared Spectra ◽  
Titanium Tetrachloride ◽  
Complex Molecule ◽  
Dicarboxylic Acids ◽  
The Other ◽  
Zirconium Tetrachloride ◽  
Melting Points ◽  
Zirconium Complexes ◽  
Tin Tetrachloride

Co-ordination complexes between diesters of α,ω-dicarboxylic acids and titanium tetrachloride, tin tetrachloride, and zirconium tetrachloride have been prepared. The analytical results, the infrared spectra, the melting points, and the molecular-weight determinations indicate that for the titanium and zirconium complexes, two types of complexes are obtained, one having a general formula MX4•1 diester in which chelate rings from five to nine atoms are formed and the other one, 2MX4•1 diester in which there are two 4-membered rings per complex molecule. With tin tetrachloride only one type of complex is formed, which has two tin tetrachlorides and two diesters per complex molecule.

ADDITION COMPOUNDS OF THE GROUP IV HALIDES: II. ETHYLAMINE AND THE TETRACHLORIDES OF SILICON, GERMANIUM, TIN, AND TITANIUM

1952 ◽  
Vol 30 (11) ◽  
pp. 842-843 ◽  
Author(s):  
W. R. Trost
Keyword(s):  
Transition State ◽  
Silicon Germanium ◽  
Substitution Reaction ◽  
Titanium Tetrachloride ◽  
Group Iv ◽  
Silicon Tetrachloride ◽  
Addition Compound ◽  
Germanium Tin ◽  
Tin Tetrachloride

Aminates of tin tetrachloride and titanium tetrachloride are reported. On the bases of these compounds, and the recovery of a tetraminate, SiCl4•4EtNH2, from among the substitution products in the reaction of silicon tetrachloride with ethylamine at −78 °C., it is suggested that the transition state in the substitution reaction corresponds to an addition compound.

scholarly journals Raman spectrum of group IV nanowires: influence of temperature

2011 ◽  
Vol 1305 ◽  
Author(s):  
J. Anaya ◽  
C. Prieto ◽  
J. Souto ◽  
J. Jiménez ◽  
A. Rodríguez ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Raman Spectrum ◽  
Laser Beam ◽  
Semiconductor Nanowires ◽  
Group Iv ◽  
Experimental Conditions ◽  
Influence Of Temperature ◽  
Spectrum Of Group ◽  
Group Iv Semiconductor ◽  
Heat Transport Equation

ABSTRACTGroup IV semiconductor nanowires are characterized by Raman spectroscopy. The results are analyzed in terms of the heating induced by the laser beam on the nanowires. By solving the heat transport equation one can simulate the temperature reached by the NWs under the exposure to a laser beam. The results are illustrated with Si and Si1-xGex nanowires. Both bundles of nanowires and individual nanowires are studied. The main experimental conditions contributing to the nanowire heating are discussed.

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