THE HEAT OF FORMATION OF (CH3O)2B+

被引：11
|
作者：
RANATUNGA, TD [1 ]
POUTSMA, JC [1 ]
SQUIRES, RR [1 ]
KENTTAMAA, HI [1 ]
机构：
[1] PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1993年 / 128卷 / 03期
关键词：
BORON; THERMOCHEMISTRY; BORINIUM ION; TRIMETHYL BORATE; PROTON AFFINITY;
D O I：
10.1016/0168-1176(93)87072-Z
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The proton affinity of trimethyl borate was determined to be 197 +/- 3 kcal mol-1 by bracketing in both directions in a Fourier-transform ion cyclotron resonance mass spectrometer. This value was used to calculate a heat of formation of -46.3 +/- 3.0 kcal mol-1 for CH3O(H)B(OCH3)2+. Collision-induced dissociation threshold energy measurements carried out in a flowing afterglow-triple quadrupole instrument yield an activation energy of 39.5 +/- 3.5 kcal mol-1 for the dissociation of CH3O(H)B(OCH3)2+ to CH3OH and (CH3O)2B+. This bond dissociation energy, together with the heat of formation of CH3O(H)B(OCH3)2+, was used to calculate a heat of formation of 41.4 +/- 4.6 kcal mol-1 for (CH3O)2B+.
引用
收藏
页码：L1 / L4
页数：4
相关论文
共 50 条
  • [31] Cathodic Processes in the KF-AlF3-Al2O3-B2O3 Melt
    Filatov, A. A.
    Suzdal'tsev, A., V
    Zaikov, Yu P.
    RUSSIAN METALLURGY, 2022, 2022 (08): : 837 - 843
  • [32] Characteristics of phase formation during combustion of the MgO-Al2O3-Mg(NO3)2.6H2O-Al-B system
    Radishevskaya, N., I
    Lepakova, O. K.
    Nazarova, A. Yu
    L'vov, O., V
    Kitler, V. D.
    Gabbasov, R. M.
    Minin, R., V
    CERAMICS INTERNATIONAL, 2022, 48 (10) : 13948 - 13959
  • [33] Structure and related physical properties of Li2O-Sb2O3-B2O3 glasses
    Tozri, A.
    Al-Zaibani, M.
    Shahboub, A.
    El Agammy, E. F.
    PHYSICA SCRIPTA, 2022, 97 (08)
  • [34] Phase formation in Li2O-Rb2O-B2O3 system and investigation of crystal structure of rubidium lithium borate RbLiB6O10 • nH2O
    Meshalkin, A. B.
    Kaplun, A. B.
    Pylneva, N. A.
    Pylneva, L. L.
    Klevtzova, R. F.
    Glinskaya, L. A.
    JOURNAL OF CRYSTAL GROWTH, 2008, 310 (7-9) : 1971 - 1975
  • [35] Ab initio and DFT study of the structural properties and thermochemistry of CH3S(O)2OONO2 atmospheric molecule and CH3S(O)2OO• radical
    Ge Mao-Fa
    Du Lin
    Ma Yan-Ping
    He Sheng-Gui
    CHINESE JOURNAL OF CHEMISTRY, 2008, 26 (06) : 998 - 1004
  • [36] π-Bonding in B-O ring species:: Lewis acidity of Me3B3O3, synthesis of amine Me3B3O3 adducts, and the crystal and molecular structure of Me3B3O•3NH2iBu•MeB(OH)2
    Beckett, MA
    Brassington, DS
    Owen, P
    Hursthouse, MB
    Light, ME
    Malik, KMA
    Varma, KS
    JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1999, 585 (01) : 7 - 11
  • [37] Models for boronic acid receptors: a computational structural, bonding, and thermochemical investigation of the HB(OH)2•H2O•NH3 and HB(-O-CH2-CH2-O-)•NH3•H2O potential energy surfaces
    Markham, George D.
    Larkin, Joseph D.
    Bock, Charles W.
    STRUCTURAL CHEMISTRY, 2021, 32 (02) : 607 - 621
  • [38] Hydrothermal synthesis and thermodynamic properties of 2ZnO • 3B2O3 • 3H2O
    Gao, Yi-Hong
    Liu, Zhi-Hong
    Wang, Xiao-Lan
    JOURNAL OF CHEMICAL THERMODYNAMICS, 2009, 41 (06) : 775 - 778
  • [39] Structure and electrical conductivity of Li2O-B2O3 glasses
    Sokolov, I. A.
    Murin, I. V.
    Kriit, V. E.
    Pronkin, A. A.
    GLASS PHYSICS AND CHEMISTRY, 2013, 39 (01) : 19 - 31
  • [40] Models for boronic acid receptors: a computational structural, bonding, and thermochemical investigation of the HB(OH)2∙H2O∙NH3 and HB(-O-CH2-CH2-O-)∙NH3∙H2O potential energy surfaces
    George D. Markham
    Joseph D. Larkin
    Charles W. Bock
    Structural Chemistry, 2021, 32 : 607 - 621
12345