On the Reactivity of Silylboranes toward Lewis Bases: Heterolytic B-Si Cleavage vs. Adduct Formation

2013 ◽  
Vol 2013 (15) ◽  
pp. 2799-2806 ◽  
Author(s):  
Christian Kleeberg ◽  
Corinna Borner
Keyword(s):  
Adduct Formation ◽  
Lewis Bases

Thermodynamics of metal-ligand bond formation. XXIII. Lewis acidity of mercury(II) thiocyanate

1976 ◽  
Vol 29 (11) ◽  
pp. 2405 ◽  
Author(s):  
Y Farhangi ◽  
DP Graddon
Keyword(s):  
Bond Formation ◽  
Formation Constants ◽  
Adduct Formation ◽  
Lewis Acidity ◽  
Acetonitrile Solution ◽  
Enthalpies Of Formation ◽  
Dilute Solution ◽  
Lewis Bases ◽  
Metal Ligand ◽  
Ligand Bond

Thermodynamic data are reported for the reaction of Lewis bases with mercury(11) thiocyanate in acetonitrile solution. Pyridine, 4-methylpyridine and tetrahydrothiophen form 1 : 1 adducts with adduct formation constants and enthalpies of formation comparable to those with mercury(11) iodide. 1,l0-Phenanthroline, 2,2'-bipyridine and N,N,N',N?-tetramethylethane-1,2-diamine form chelate 1 : 1 adducts, but with enthalpies of formation little larger than that with pyridine. The phosphines, PPh3 and Pbu3, form 1 : 1 and 1 : 2 adducts of much greater stability, though the enthalpies of formation of these adducts are also similar to that with pyridine; Hg(SCN)2PBu3 is dimeric in dilute solution.

scholarly journals Adduct-Formation Constants of Bis(3-trifluoroacetyl-d-camphorato)copper(II) with Lewis Bases

1976 ◽  
Vol 49 (8) ◽  
pp. 2325-2326 ◽  
Author(s):  
Tsunenobu Shigematsu ◽  
Masakazu Matsui ◽  
Yoshihiro Sasaki ◽  
Matsujiro Sakurada
Keyword(s):  
Formation Constants ◽  
Adduct Formation ◽  
Lewis Bases

Reaction of the Five-Coordinate O-Nitrito Complex Fe(Por)(ONO) (Por = meso-tetra-arylporphyrinato) with THF Gives Two Six-Coordinate Isomers

2009 ◽  
Vol 62 (10) ◽  
pp. 1226 ◽  
Author(s):  
Tigran S. Kurtikyan ◽  
Astghik A. Hovhannisyan ◽  
Alexei Iretskii ◽  
Peter C. Ford
Keyword(s):  
Low Temperature ◽  
Density Functional ◽  
Adduct Formation ◽  
Solvent Free ◽  
Model Systems ◽  
Lewis Bases ◽  
Nitrogen Donor ◽  
Density Functional Computations

The effect of the proximal ligand on the coordination of the nitrite ligand to the heme model systems Fe(Por)(η1-ONO) (Por = meso-tetraarylporphyrinato dianion) was investigated by FTIR and UV-vis spectra in solvent free, low temperature, porous layered solids and by density functional computations. The reaction of the five-coordinate complex Fe(Por)(η1-ONO) with the ether tetrahydrofuran gives a mixture of the O-nitrito and N-nitrito isomers Fe(Por)(THF)(η1-ONO) and Fe(Por)(THF)(NO2), respectively. This observation is in contrast to earlier studies with nitrogen donor Lewis bases where the N-nitrito isomers were clearly the more stable of the six-coordinated complexes. The adduct formation is reversible; the five-coordinate O-nitrito complexes Fe(Por)(η1-ONO) were largely restored upon warming under vacuum pumping.

Polymeric carbon Lewis base–acid adducts: poly(NHC–C60)

2015 ◽  
Vol 6 (10) ◽  
pp. 1741-1750 ◽  
Author(s):  
Miao Hong ◽  
Eugene Y.-X. Chen
Keyword(s):  
Adduct Formation ◽  
Lewis Base ◽  
Lewis Bases ◽  
Polymeric Carbon

Polymers with high C60 incorporations and intriguing properties are conveniently synthesized via adduct formation between polymeric Lewis bases and C60.

ChemInform Abstract: ADDUCT-FORMATION CONSTANTS OF BIS(3-TRIFLUOROACETYL-D-CAMPHORATO)COPPER(II) WITH LEWIS BASES

1976 ◽  
Vol 7 (48) ◽  
pp. no-no
Author(s):  
T. SHIGEMATSU ◽  
M. MATSUI ◽  
Y. SASAKI ◽  
M. SAKURADA
Keyword(s):  
Formation Constants ◽  
Adduct Formation ◽  
Lewis Bases

scholarly journals Enthalpies of Adduct Formation between Boron Trifluoride and Selected Organic Bases in Solution: Toward an Accurate Theoretical Entry to Lewis Basicity

2021 ◽  
Author(s):  
Jean-François Gal ◽  
Pierre-Charles Maria ◽  
Manuel Yáñez ◽  
Otilia Mó
Keyword(s):  
Hydrogen Bonding ◽  
Uncertain Data ◽  
Adduct Formation ◽  
Lewis Base ◽  
Solvation Model ◽  
Specific Solvation ◽  
Lewis Bases ◽  
Organic Bases ◽  
Experimental Values ◽  
High Level

The Lewis basicity of selected organic bases, modeled by the enthalpies of adduct formation between gaseous BF3 and the bases in dichloromethane (DCM) solution, is critically examined. Although experimental enthalpies for a large number of molecules have been reported in the literature, it may be desirable to estimate missing or uncertain data for important Lewis bases. We have decided to use high-level ab initio procedures, combined with a polarized continuum solvation model, in which the solvated species are the clusters formed by specific hydrogen bonding of DCM with the Lewis base and the Lewis base/BF3 adduct. This mode of interaction with DCM corresponds to a specific solvation model (SSM). The results actually show that the enthalpy of BF3 adduct formation in DCM solution is clearly influenced by specific interactions, DCM acting as hydrogen-bonding donor (HBD) molecule in two ways: base/DCM and adduct/DCM, confirming that specific solvation is an important contribution to experimentally determined Lewis basicity scales. This analysis allows us to conclude that there are reasons to suspect some gas-phase values to be in error by more than the stated experimental uncertainty. Some experimental values in DCM solution that were uncertain because of identified reasons can be complemented by the computed values.

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