Heteroleptic copper(I) complexes incorporating sterically demanding diazabutadiene ligands (DABs). Synthesis, spectroscopic characterization and solid state structural analysis

Polyhedron ◽  
2019 ◽  
Vol 171 ◽  
pp. 412-422 ◽  
Author(s):  
Anastasios Peppas ◽  
Evanthia Papadaki ◽  
Gregor Schnakenburg ◽  
Victoria Magrioti ◽  
Athanassios I. Philippopoulos
Keyword(s):  
Solid State ◽  
Structural Analysis ◽  
Spectroscopic Characterization ◽  
Sterically Demanding

scholarly journals Solid state linear-dichroic infrared (IR-LD) spectroscopic characterization of α-and β-glycine polymorphs

2006 ◽  
Vol 4 (1) ◽  
pp. 111-117 ◽  
Author(s):  
Bojidarka Ivanova
Keyword(s):  
Liquid Crystal ◽  
Solid State ◽  
Structural Analysis ◽  
Nematic Liquid Crystal ◽  
Spectroscopic Analysis ◽  
Spectroscopic Characterization ◽  
State Orientation ◽  
Orientation Technique

AbstractIR-LD spectroscopic analysis using nematic liquid crystal suspension as a solid-state orientation technique and the reducing-difference procedure for polarized spectra interpretation are applied to the α-and β-polymorphs of glycine. Both structural analysis and detailed IR band assignments were carried out.

Structural Analysis of Slag and Cement Materials by Solid-state NMR

2018 ◽  
Vol 56 (5) ◽  
pp. 454-459
Author(s):  
T. Takahashi ◽  
T. Ohkubo ◽  
K. Kanehashi
Keyword(s):  
Solid State ◽  
Structural Analysis ◽  
Solid State Nmr

Tetrasulfinylcalix[4]arenes: Synthesis and solid state structural analysis

1999 ◽  
Vol 40 (6) ◽  
pp. 1129-1132 ◽  
Author(s):  
Gilles Mislin ◽  
Ernest Graf ◽  
Mir Wais Hosseini ◽  
André De Cian ◽  
Jean Fischer
Keyword(s):  
Solid State ◽  
Structural Analysis

Neutral 4-phenyl-1-[phenyl(pyridin-2-yl)methylidene]semicarbazide and its salt forms with inorganic anions

2019 ◽  
Vol 75 (1) ◽  
pp. 1-7
Author(s):  
Vinicius Oliveira Araujo ◽  
Bárbara Tirloni ◽  
Lívia Streit ◽  
Vânia Denise Schwade
Keyword(s):  
Solid State ◽  
Spectroscopic Characterization ◽  
Water Molecules ◽  
Keto Form ◽  
Chloride Dihydrate ◽  
Ir And Nmr Spectroscopy ◽  
Tautomeric Forms ◽  
Counter Ions ◽  
Salt Forms ◽  
Good Agreement

Semicarbazones can exist in two tautomeric forms. In the solid state, they are found in the keto form. This work presents the synthesis, structures and spectroscopic characterization (IR and NMR spectroscopy) of four such compounds, namely the neutral molecule 4-phenyl-1-[phenyl(pyridin-2-yl)methylidene]semicarbazide, C19H16N4O, (I), abbreviated as HBzPyS, and three different hydrated salts, namely the chloride dihydrate, C19H17N4O+·Cl−·2H2O, (II), the nitrate dihydrate, C19H17N4O+·NO3 −·2H2O, (III), and the thiocyanate 2.5-hydrate, C19H17N4O+·SCN−·2.5H2O, (IV), of 2-[phenyl({[(phenylcarbamoyl)amino]imino})methyl]pyridinium, abbreviated as [H2BzPyS]+·X −·nH2O, with X = Cl− and n = 2 for (II), X = NO3 − and n = 2 for (III), and X = SCN− and n = 2.5 for (IV), showing the influence of the anionic form in the intermolecular interactions. Water molecules and counter-ions (chloride or nitrate) are involved in the formation of a two-dimensional arrangement by the establishment of hydrogen bonds with the N—H groups of the cation, stabilizing the E isomers in the solid state. The neutral HBzPyS molecule crystallized as the E isomer due to the existence of weak π–π interactions between pairs of molecules. The calculated IR spectrum of the hydrated [H2BzPyS]+ cation is in good agreement with the experimental results.

Structural analysis of Aleksinac oil shale kerogen by high-resolution solid-state 13C n.m.r. spectroscopy

Fuel ◽  
1995 ◽  
Vol 74 (12) ◽  
pp. 1903-1909 ◽  
Author(s):  
Zoran Ẑujović ◽  
Radivoje Srejić ◽  
Dušan Vučelić ◽  
Dragomir Vitorović ◽  
Branimir Jovančićević
Keyword(s):  
Solid State ◽  
Structural Analysis ◽  
High Resolution ◽  
Oil Shale

Gallium-containing Heusler phases ScRh2Ga, ScPd2Ga, TmRh2Ga and LuRh2Ga – magnetic and solid state NMR-spectroscopic characterization

2017 ◽  
Vol 72 (8) ◽  
pp. 609-615
Author(s):  
Lukas Heletta ◽  
Stefan Seidel ◽  
Christopher Benndorf ◽  
Hellmut Eckert ◽  
Rainer Pöttgen
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Spectroscopic Characterization ◽  
Structural Disorder ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
Phase Purity ◽  
X Ray ◽  
Arc Melting ◽  
Pauli Paramagnetism

AbstractThe gallium-containing Heusler phases ScRh2Ga, ScPd2Ga, TmRh2Ga and LuRh2Ga have been synthesized by arc-melting of the elements followed by different annealing sequences to improve phase purity. The samples have been studied by powder X-ray diffraction. The structures of Lu0.97Rh2Ga1.03 (Fm3̅m, a=632.94(5) pm, wR2=0.0590, 46 F2 values, seven variables) and Sc0.88Rh2Ga1.12 (a=618.91(4) pm, wR2=0.0284, 44 F2 values, six variables) have been refined from single crystal X-ray diffractometer data. Both gallides show structural disorder through Lu/Ga and Sc/Ga mixing. Temperature dependent magnetic susceptibility measurements showed Pauli paramagnetism for ScRh2Ga, ScPd2Ga, and LuRh2Ga and Curie-Weiss paramagnetism for TmRh2Ga. 45Sc and 71Ga solid state MAS NMR spectroscopic investigations of the Sc containing compounds confirmed the site mixing effects typically observed for Heusler phases. The data indicate that the effect of mixed Sc/Ga occupancy is significantly stronger in ScRh2Ga than in ScPd2Ga.

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