4,6-Dicarba-8-thia-arachno-nonaborane(10) Revisited. Theoretical Refinement of Its Structure

1999 ◽  
Vol 64 (6) ◽  
pp. 993-1000 ◽  
Author(s):  
Drahomír Hnyk ◽  
Matthias Hofmann ◽  
Paul von Ragué Schleyer
Keyword(s):  
Raman Spectroscopy ◽  
Ab Initio ◽  
Chemical Shifts ◽  
Structural Features ◽  
Ir And Raman Spectroscopy ◽  
Nmr Method ◽  
Ir And Raman ◽  
Rule Out

The structure of the nine-vertex arachno-thiadicarbaborane C2SB6H10 has been established employing the ab initio/IGLO/NMR method. Theoretical IGLO 11B chemical shifts support C and S atom placements at the 4, 6 and 8 positions, respectively, and unambiguously rule out the 4,6,5-C2SB6H10 structural alternative, suggested earlier on the basis of IR and Raman spectroscopy. Important structural features of the 4,6,8-C2SB6H10 geometry include a small B(7)-S(8)-B(9) angle (MP2(fc)/6-31G*: 97.9°) and long S-B bonds (MP2(fc)/6-31G*: 1.905 and 1.924 Å) compared to B-B bonds spanning the 1.71-1.85 Å range.

Characterisation of essential oil plants from Turkey by IR and Raman spectroscopy

2005 ◽  
Vol 39 (2) ◽  
pp. 249-256 ◽  
Author(s):  
Hartwig Schulz ◽  
Gülcan Özkan ◽  
Malgorzata Baranska ◽  
Hans Krüger ◽  
Musa Özcan
Keyword(s):  
Raman Spectroscopy ◽  
Essential Oil ◽  
Ir And Raman Spectroscopy ◽  
Ir And Raman

scholarly journals A spectroscopic investigation of 12-tungstophosphoric acid alkali salts

2000 ◽  
Vol 65 (5-6) ◽  
pp. 399-406 ◽  
Author(s):  
Ubavka Mioc ◽  
Marija Todorovic ◽  
Snezana Uskokovic-Markovic ◽  
Zoran Nedic ◽  
Nada Bosnjakovic
Keyword(s):  
Raman Spectroscopy ◽  
Spectroscopic Investigation ◽  
Dynamic Equilibrium ◽  
Host Lattice ◽  
Tungstophosphoric Acid ◽  
Heteropoly Acids ◽  
Ir And Raman Spectroscopy ◽  
Keggin Anions ◽  
Ir And Raman ◽  
Alkali Salts

In this paper the latest results of our continuing investigation of heteropoly acids and their salts are reported. Specially attention was paid to the influence of cations on the dynamic equilibrium of protonic species, as well as on the structure of the host lattice itself, i.e., the Keggin anions. The investigations were done by IR and Raman spectroscopy within the range of 1200.40 cm-1.

FT-IR and Raman Spectroscopy of C58BN

1997 ◽  
pp. 271-273
Author(s):  
K. Antonova ◽  
P. Byshewski ◽  
G. Zhizhin ◽  
J. Piechota ◽  
M. Marhevka
Keyword(s):  
Raman Spectroscopy ◽  
Ir And Raman Spectroscopy ◽  
Ft Ir ◽  
Ir And Raman

Enhanced Failure Analysis (FA) of Organic Contamination Using Submicron Simultaneous IR and Raman Spectroscopy: Breakthrough Developments of Optical Photothermal IR (O-PTIR)

2020 ◽  
Author(s):  
D. Jay Anderson ◽  
Mustafa Kansiz ◽  
Michael Lo ◽  
Eoghan Dillon ◽  
Curtis Marcott
Keyword(s):  
Raman Spectroscopy ◽  
Failure Analysis ◽  
Semiconductor Manufacturing ◽  
Rapid Identification ◽  
Organic Contamination ◽  
Premature Failure ◽  
Specific Element ◽  
Ir And Raman Spectroscopy ◽  
Semiconductor Manufacturer ◽  
Ir And Raman

Abstract Rapid identification of organic contamination in the semi and semi related industry is a major concern for research and manufacturing. Organic contamination can affect a system or subsystem’s performance and cause premature failure of the product. As an example, in February 2019 the Taiwan Semiconductor Manufacturing Company (TMSC), a major semiconductor manufacturer, reported that a photoresist it used included a specific element which was abnormally treated, creating a foreign polymer in the photoresist resulting in an estimated loss of $550M [1].

Structural properties of Li2CO3–BaCO3 system derived from IR and Raman spectroscopy

2001 ◽  
Vol 596 (1-3) ◽  
pp. 151-156 ◽  
Author(s):  
P. Pasierb ◽  
S. Komornicki ◽  
M. Rokita ◽  
M. Rȩkas
Keyword(s):  
Raman Spectroscopy ◽  
Structural Properties ◽  
Ir And Raman Spectroscopy ◽  
Ir And Raman
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