scholarly journals Crystal Structure, Thermal Behaviour and Vibrational Spectra of Tetraethylammonium Dihydrogenmonophosphate Bis Phosphoric Acid

2013 ◽  
Vol 02 (01) ◽  
pp. 8-15 ◽  
Author(s):  
Ikram Dhouib ◽  
Salih Al-Juaid ◽  
Tahar Mhiri ◽  
Zakaria Elaoud
Keyword(s):  
Crystal Structure ◽  
Phosphoric Acid ◽  
Thermal Behaviour ◽  
Vibrational Spectra

Preparation, crystal structure, vibrational spectra and thermal behaviour of piperazinium(2+) selenite monohydrate and piperazinium(2+) diselenite

2002 ◽  
Vol 606 (1-3) ◽  
pp. 101-116 ◽  
Author(s):  
David Havlı́ček ◽  
Vı́t Chudoba ◽  
Ivan Němec ◽  
Ivana Cı́sařová ◽  
Zdeněk Mička
Keyword(s):  
Crystal Structure ◽  
Thermal Behaviour ◽  
Vibrational Spectra

Synthesis, Crystal Structure, Vibrational Spectra, and Thermal Behaviour of [Ph4P]2[Bi2(μ-Br)2Br6 (CH3COCH3)2]

2001 ◽  
Vol 627 (6) ◽  
pp. 1365-1370 ◽  
Author(s):  
Ibrahim Abdel Ahmed ◽  
Roger Blachnik ◽  
Hans Reuter ◽  
Henning Eickmeier ◽  
Dietrich Schultze ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Behaviour ◽  
Vibrational Spectra

ChemInform Abstract: BaN3Cl: Synthesis, Crystal Structure, Vibrational Spectra and Thermal Decomposition of Barium Azide Chloride.

ChemInform ◽  
2009 ◽  
Vol 40 (2) ◽  
Author(s):  
Bjoern Blaschkowski ◽  
Harald Balzer ◽  
Hans-Lothar Keller ◽  
Thomas Schleid
Keyword(s):  
Crystal Structure ◽  
Thermal Decomposition ◽  
Vibrational Spectra

Study of Vibrational Spectra of Polyaniline Doped with Sulfuric Acid and Phosphoric Acid

2001 ◽  
Vol 96 (1-3) ◽  
pp. 173-182 ◽  
Author(s):  
Manju Arora ◽  
Vandna Luthra ◽  
Ramadhar Singh ◽  
S K Gupta
Keyword(s):  
Sulfuric Acid ◽  
Phosphoric Acid ◽  
Vibrational Spectra

Calcium Carbodiimide Compounds Revisited – Syntheses, Single Crystal Structure Determination and Vibrational Spectra of Ca11N6[CN2]2, Ca4N2[CN2] and Ca[CN2]

2008 ◽  
Vol 63 (5) ◽  
pp. 530-536 ◽  
Author(s):  
Olaf Reckeweg ◽  
Francis J. DiSalvo
Keyword(s):  
Crystal Structure ◽  
Raman Spectrum ◽  
Single Crystal ◽  
Single Crystals ◽  
Vibrational Spectra ◽  
Structure Determination ◽  
X Ray ◽  
Characteristic Features ◽  
Reported Data ◽  
Correct Data

Single crystals of Ca11N6[CN2]2 (dark red needles, tetragonal, P42/mnm (no. 136), a = 1456.22(5), and c = 361.86(2) pm, Z = 2), Ca4N2[CN2] (transparent yellow needles, orthorhombic, Pnma (no. 62), a = 1146.51(11), b = 358.33(4), and c = 1385.77(13) pm, Z = 4) and Ca[CN2] (transparent, colorless, triangular plates, rhombohedral, R3̅m (no. 166), a = 369.00(3), and c = 1477.5(3) pm, Z = 3) were obtained by the reaction of Na2[CN2], CaCl2 and Ca3N2 (if demanded by stoichiometry) in arc-welded Ta ampoules at temperatures between 1200 - 1400 K. Their crystal structures were re-determined by means of single crystal X-ray structure analyses. Additionally, the Raman spectra were recorded on these same single crystals, whereas the IR spectra were obtained with the KBr pellet technique. The title compounds exhibit characteristic features for carbodiimide units with D∞h symmetry (d(C-N) = 121.7 - 123.8 pm and ∡ (N-C-N) = 180°). The vibrational frequencies of these units are in the expected range (Ca11N6[CN2]2: νs = 1230, νs = 2008; δ = 673/645/624 cm−1; Ca4N2[CN2]: νs = 1230, νs = 1986; δ = 672/647 cm−1; Ca[CN2]: νs = 1274, νs = 2031, δ = 668 cm−1). The structural results are more precise than the previously reported data, and with the newly attained Raman spectrum of Ca11N6[CN2]2 we correct data reported earlier.

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