Characterization of Water Clusters in Organic Molecular Hosts from Density Functional Theory Calculations

2004 ◽  
Vol 108 (11) ◽  
pp. 3431-3436 ◽  
Author(s):  
Dominic R. Alfonso ◽  
Karen Karapetian ◽  
Dan C. Sorescu ◽  
Kenneth D. Jordan
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Water Clusters ◽  
Density Functional Theory Calculations ◽  
Functional Theory

P—N Bond Length Alterations Monitored by Infrared Absorption and Fourier Transform Raman Spectroscopy in Combination with Density Functional Theory Calculations

2003 ◽  
Vol 57 (8) ◽  
pp. 970-976 ◽  
Author(s):  
M. Bolboaca ◽  
T. Stey ◽  
A. Murso ◽  
D. Stalke ◽  
W. Kiefer
Keyword(s):  
Density Functional Theory ◽  
Fourier Transform ◽  
Density Functional ◽  
Structural Parameters ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Fourier Transform Raman Spectroscopy ◽  
Raman And Infrared Spectroscopy ◽  
Fourier Transform Raman

Fourier transform (FT) Raman and infrared spectroscopy in combination with density functional theory calculations have been applied to the vibrational characterization of the dimeric zinc diphenylphosphanyl(trimethylsilyl)amide complex [(Me3Si)2NZnPh2PNSiMe3]2 and the ortho-metallated species [Li( o-C6H4PPh2NSiMe3)]2·Et2O in relation to their parent starting materials diphenylphosphanyl (trimethylsilyl)amine Ph2P–N(H)SiMe3 and iminophosphorane Ph3P=NSiMe3. The spectroscopic changes evidenced in the spectra were correlated with the structural parameters in order to provide insight as to what extent the P–N bond is affected by the coordination to the metal center. The employment of density functional theory (DFT) calculations in addition to these spectroscopic methods offers the possibility of predicting whether the Lewis-basic imido nitrogen atom is involved in coordination not only in the solid state, but also in the gas phase.

scholarly journals Hydrosilyation of CO2 using a silatrane hydride: structural characterization of a silyl formate compound

2021 ◽  
Vol 99 (2) ◽  
pp. 259-267
Author(s):  
Serge Ruccolo ◽  
Erika Amemiya ◽  
Daniel G. Shlian ◽  
Gerard Parkin
Keyword(s):  
Molecular Structure ◽  
Density Functional Theory ◽  
Oxygen Atom ◽  
Structural Characterization ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
X Ray Diffraction ◽  
Functional Theory ◽  
X Ray

The silatrane hydride compound, [N(CH2CH2O)3]SiH, reacts with CO2 in the presence of the [tris(2-pyridylthio)methyl]zinc hydride complex, [Tptm]ZnH, to afford the silyl formate and methoxide derivatives, [N(CH2CH2O)3]SiO2CH and [N(CH2CH2O)3]SiOCH3. The molecular structure of [N(CH2CH2O)3]SiO2CH has been determined by X-ray diffraction, thereby demonstrating that the formate ligand adopts a distal conformation in which the uncoordinated oxygen atom resides with a trans-like disposition relative to silicon. Density functional theory calculations indicate that the atrane motif of [N(CH2CH2O)3]SiO2CH is flexible, such that the energy of the molecule changes relatively little as the Si···N distance varies over the range 2.0–3.0 Å.

Cleavage of an Iron-Silicon Bond by Hexamethylphosphoric Triamide: Synthesis and Characterization of [SiCl3(HMPA)3]+[Fe(CO)4SiCl3]–

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1553-1557 ◽  
Author(s):  
Van An Du ◽  
Stefan O. Baumann ◽  
Gregor N. Stipicic ◽  
Ulrich Schubert
Keyword(s):  
Density Functional Theory ◽  
Reaction Mechanism ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Synthesis And Characterization ◽  
Hexamethylphosphoric Triamide ◽  
Functional Theory ◽  
Iron Silicon

Addition of excess hexamethylphosphoric triamide (HMPA) to cis-Fe(CO)4(SiCl3)2 led to the exclusive formation of the new complex [SiCl3(HMPA)3]+ [Fe(CO)4SiCl3]− by cleavage of an ironsilicon bond. A reaction mechanism is presented, based on density functional theory calculations

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