Infrared Spectra of Substituted Thiocyanate Complexes. The Effect of the Substituent on Bond Type. I

1965 ◽  
Vol 4 (11) ◽  
pp. 1665-1667 ◽  
Author(s):  
A. Sabatini ◽  
I. Bertini
1970 ◽  
Vol 25 (10) ◽  
pp. 1394-1400 ◽  
Author(s):  
W. Krasser ◽  
H. W. Nürnberg

Abstract The thiocyanates of the transition metals iron, cobalt, copper as well as of rhenium and of tech-netium appear in solution as strongly coloured complexes. The resonance raman bands in the sol-vent acetonitrile are investigated. To achieve an unambiguous identification the infrared spectra were recorded too. The change in position and structure of the acetonitrile bands indicates strong complexation of iron, cobalt and copper with acetonitrile, thus indicating the existence of mixed acetonitrile-thiocyanate complexes. The resonance raman spectra of the rhenium-and technetium-thiocyanates present as tetramethyl ammonium salts show however no raman-and infrared-bands of complexed acetonitrile molecules.In the raman spectrum of the thiocyanates of iron, cobalt and copper mainly the totally sym-metric C≡N, S-C, Me-S and Me-N valence vibrations are observed, among which the S-C vibration shows a remarkably high intensity. Besides, a series of bands is obtained which is inter-preted partly as caused by decay products, and partly as bands of complexed acetonitrile. The thiocyanates of rhenium and of technetium show the three possible valence vibrations only. The high frequency of the S-C valence indicates the N-coordination of the thiocyanate group.


1966 ◽  
Vol 19 (8) ◽  
pp. 1423 ◽  
Author(s):  
NF Curtis ◽  
YM Curtis

The preparation and properties of Ni(l,3-pn)2(NCS)2, Ni(trien)(NCS)2, Ni(tet a)(NCS)2, Ni(tet b)(NCS)2, Ni(dien)(NCS)2, Ni(dpt)(NCS)2, Ni(en)2NCSClO4, and Ni(trien)NCSClO4 are described (1,3-pn = 1,3-diaminopropane, trien = triethylenetetramine, tet a and tet b are isomeric hexamethylcyclotetradecanes, dien = diethylenetriamine, dpt = dipropylenetriamine, en = ethylenediamine). The first four compounds are normal N-bonded dithiocyanato derivatives, the dien and dpt derivatives have structures with one N-bonded terminal, and one bridging thiocyanate ion, and the thiocyanate perchlorate compounds have structures with a bridging thiocyanate ion. Magnetic susceptibilities (all μeff c. 3.1 B.M.), infrared spectra (including that of N-deuterated Si(l,3-pn)2(NCS)2), reflectance spectra, and conductances in methanol and acetone are reported.


2000 ◽  
Vol 27 (2) ◽  
pp. 79
Author(s):  
GÊNOVA MARIA PULZ ◽  
ÉLZIO DA SILVA BARBOZA ◽  
TANIA MARIA MARTINI DE BRUM ◽  
ADRIANI FISCHER ◽  
PEDRO LUIZ JUCHEM ◽  
...  

The infrared spectra of two natural samples of powdered emerald from Pirenópolis (Goiás State, Central Brazil) were measured at room temperature (~ 20ºC). Water molecules occur in two different configurations. Three absorption peaks (3656, 3592 and 1624 cm-1) record the vibrations of the type-II H2O. The peak absorption at 3691 cm-1 is assigned to type- I H2O vibrations. In addition, CO2 (2358 cm-1) and CH4 (2927-2925 cm-1) molecules were also detected in the FTIR spectra. These data can be applied to distinguish the Pirenópolis gem from the other Brazilian emeralds as well as its synthetic equivalents.


2013 ◽  
Vol 82 (2) ◽  
pp. 024601 ◽  
Author(s):  
Kei Iwamoto ◽  
Shunsuke Kushibiki ◽  
Hironori Honda ◽  
Shuhei Kajitani ◽  
Tatsuya Mori ◽  
...  
Keyword(s):  

1993 ◽  
Vol 70 (7) ◽  
pp. 531 ◽  
Author(s):  
Gordon D. Sproul
Keyword(s):  
Type I ◽  

1968 ◽  
Vol 7 (3) ◽  
pp. 617-620 ◽  
Author(s):  
Richard H. Toeniskoetter ◽  
Stanley Solomon

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