Vibrational studies of interstitial carbide atoms in nickel and rhenium carbonyl carbide clusters

1987 ◽  
Vol 26 (17) ◽  
pp. 2769-2774 ◽  
Author(s):  
P. L. Stanghellini ◽  
R. Rossetti ◽  
G. D'Alfonso ◽  
G. Longoni
Keyword(s):  
Rhenium Carbonyl ◽  
Interstitial Carbide ◽  
Vibrational Studies

ChemInform Abstract: Vibrational Studies of Interstitial Carbide Atoms in Nickel and Rhenium Carbonyl Carbide Clusters

ChemInform ◽  
1987 ◽  
Vol 18 (49) ◽  
Author(s):  
P. L. STANGHELLINI ◽  
R. ROSSETTI ◽  
G. D'ALFONSO ◽  
G. LONGONI
Keyword(s):  
Rhenium Carbonyl ◽  
Interstitial Carbide ◽  
Vibrational Studies

Tris(pyrazolyl)borate Copper Hydroxide Complexes Featuring Tunable Intramolecular H-bonding

2019 ◽  
Author(s):  
Evan Gardner ◽  
Caitlyn Cobb ◽  
Jeffery A. Bertke ◽  
Timothy H. Warren
Keyword(s):  
Single Crystal ◽  
Copper Hydroxide ◽  
X Ray ◽  
Modular Synthesis ◽  
Pendant Arm ◽  
Copper Center ◽  
Vibrational Studies

A modular synthesis provides access to a series of new tris(pyrazolyl)borate ligands <sup>XpyMe</sup>TpK that possess a single functionalized pendant pyridyl (py) or pyrimidyl (pyd) arm designed to engage in tunable intramolecular H-bonding to metal–bound functionalities. To illustrate such H-bonding interactions, a series of [<sup>XpyMe</sup>TpCu]<sub>2</sub>(𝜇–OH)<sub>2</sub>(<b>6a</b><b>–6e</b>) complexes were synthesized from the corresponding <sup>XpyMe</sup>TpCu–OAc (<b>5a–5e</b>) complexes. Single crystal X-ray structures of three new dinuclear [<sup>XpyMe</sup>TpCu]<sub>2</sub>(𝜇–OH)<sub>2</sub>complexes reveal H-bonding between the pendant heterocycle and bridging hydroxide ligands while the donor arm engages the copper center in an unusual monomeric <sup>DMAPMe</sup>TpCu–OH complex. Vibrational studies (IR) of each bridging hydroxide complex reveal reduced 𝜈<sub>OH </sub>frequencies that tracks with the H-bond accepting ability of the pendant arm.

Tris(pyrazolyl)borate Copper Hydroxide Complexes Featuring Tunable Intramolecular H-bonding

2019 ◽  
Author(s):  
Evan Gardner ◽  
Caitlyn Cobb ◽  
Jeffery A. Bertke ◽  
Timothy H. Warren
Keyword(s):  
Single Crystal ◽  
Copper Hydroxide ◽  
X Ray ◽  
Modular Synthesis ◽  
Pendant Arm ◽  
Copper Center ◽  
Vibrational Studies

A modular synthesis provides access to a series of new tris(pyrazolyl)borate ligands <sup>XpyMe</sup>TpK that possess a single functionalized pendant pyridyl (py) or pyrimidyl (pyd) arm designed to engage in tunable intramolecular H-bonding to metal–bound functionalities. To illustrate such H-bonding interactions, a series of [<sup>XpyMe</sup>TpCu]<sub>2</sub>(𝜇–OH)<sub>2</sub>(<b>6a</b><b>–6e</b>) complexes were synthesized from the corresponding <sup>XpyMe</sup>TpCu–OAc (<b>5a–5e</b>) complexes. Single crystal X-ray structures of three new dinuclear [<sup>XpyMe</sup>TpCu]<sub>2</sub>(𝜇–OH)<sub>2</sub>complexes reveal H-bonding between the pendant heterocycle and bridging hydroxide ligands while the donor arm engages the copper center in an unusual monomeric <sup>DMAPMe</sup>TpCu–OH complex. Vibrational studies (IR) of each bridging hydroxide complex reveal reduced 𝜈<sub>OH </sub>frequencies that tracks with the H-bond accepting ability of the pendant arm.

Structural and vibrational studies of solid ammonia to 120 GPa

2005 ◽  
Vol 61 (a1) ◽  
pp. c79-c80 ◽  
Author(s):  
F. Datchi ◽  
S. Ninet ◽  
M. Gauthier ◽  
A. M. Saitta
Keyword(s):  
Vibrational Studies ◽  
Solid Ammonia

scholarly journals Structural and Raman Vibrational Studies ofCeO2-Bi2O3Oxide System

2009 ◽  
Vol 2009 ◽  
pp. 1-4 ◽  
Author(s):  
L. Bourja ◽  
B. Bakiz ◽  
A. Benlhachemi ◽  
M. Ezahri ◽  
J. C. Valmalette ◽  
...  
Keyword(s):  
Solid Solution ◽  
Raman Spectroscopy ◽  
Phase Changes ◽  
Phase System ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vibrational Studies ◽  
Coprecipitation Route

A series of ceramics samples belonging to theCeO2-Bi2O3phase system have been prepared via a coprecipitation route. The crystallized phases were obtained by heating the solid precursors at600∘Cfor 6 hours, then quenching the samples. X-ray diffraction analyses show that forx<0.20a solid solutionCe1−xBixO2−x/2with fluorine structure is formed. For x ranging between 0.25 and 0.7, a tetragonalβ′phase coexisting with the FCC solid solution is observed. For x ranging between 0.8 and 0.9, a new tetragonalβphase appears. Theβ′phase is postulated to be a superstructure of theβphase. Finally, close tox=1, the classical monoclinicα Bi2O3structure is observed. Raman spectroscopy confirms the existence of the phase changes as x varies between 0 and 1.

Vibrational studies of hexagonal bronze systems: phonon calculation and high pressure induced phase transformation

2009 ◽  
Vol 40 (9) ◽  
pp. 1150-1157 ◽  
Author(s):  
J. Santos Coelho ◽  
W. Paraguassu ◽  
M. Maczka ◽  
A. G. Souza Filho ◽  
P.T.C. Freire ◽  
...  
Keyword(s):  
High Pressure ◽  
Phase Transformation ◽  
Vibrational Studies ◽  
Phonon Calculation

Crystal structure, vibrational studies, optical properties, and Hirshfeld surface analysis of (C5H6N5)2[Cr2O7]

2018 ◽  
Vol 71 (7) ◽  
pp. 1035-1047 ◽  
Author(s):  
Meriem Hadhri ◽  
Hammouda Chebbi ◽  
Amor Haddad ◽  
Brahim Ayed
Keyword(s):  
Crystal Structure ◽  
Optical Properties ◽  
Surface Analysis ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Vibrational Studies

Fluorescence and vibrational studies of charge-transfer compounds

1988 ◽  
Vol 27 (3-4) ◽  
pp. 315-320
Author(s):  
E.I Kamitsos
Keyword(s):  
Charge Transfer ◽  
Vibrational Studies

Diverse Roles of Hydrogen in Rhenium Carbonyl Chemistry: Hydrides, Dihydrogen Complexes, and a Formyl Derivative

2010 ◽  
Vol 114 (43) ◽  
pp. 11670-11680 ◽  
Author(s):  
Nan Li ◽  
Yaoming Xie ◽  
R. Bruce King ◽  
Henry F. Schaefer
Keyword(s):  
Dihydrogen Complexes ◽  
Rhenium Carbonyl
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