ELECTRON-AFFINITIES AND GAS-PHASE ACIDITIES OF ORGANOGERMANIUM AND ORGANOTIN COMPOUNDS

被引:10
作者
BRINKMAN, EA [1 ]
SALOMON, K [1 ]
TUMAS, W [1 ]
BRAUMAN, JI [1 ]
机构
[1] STANFORD UNIV,DEPT CHEM,STANFORD,CA 94305
关键词
D O I
10.1021/ja00122a022
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The electron affinities have been measured for trimethylgermanium and trimethyltin radicals as 31.9 +/- 0.7 and 39.2 +/- 1.5 kcal/mol, respectively, using electron photodetachment spectroscopy. The acidities (Delta H degrees(acid)) for the corresponding hydrides (Me(3)GeH and Me(3)SnH) have been bracketed as 361.5 +/- 2.8 and 349 +/- 2 kcal/mol. From the electron affinities and the acidities, the D degrees(Me(3)MH) are derived as 79.8 +/- 3.5 and 75 +/- 3.5 kcal/mol, respectively. These physical properties are compared with the properties of the group IVA through group VIIA binary hydrides and methyl-substituted compounds. The electron affinities of the group IVA compounds do not conform to the regular pattern; some of the reasons for this are discussed.
引用
收藏
页码:4905 / 4910
页数:6
相关论文
共 59 条
[1]   VIBRATIONAL DISTRIBUTIONS AND RATE CONSTANTS FROM REACTIONS OF OXYGEN-ATOMS WITH HL, GEH4, SIH4, H2SE, AND H2S [J].
AGRAWALLA, BS ;
SETSER, DW .
JOURNAL OF CHEMICAL PHYSICS, 1987, 86 (10) :5421-5432
[2]  
Albright T. A., 1985, ORBITAL INTERACTIONS
[3]   THEORETICAL-STUDY OF THE THERMOCHEMISTRY OF MOLECULES IN THE SI-C-H SYSTEM [J].
ALLENDORF, MD ;
MELIUS, CF .
JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (01) :428-437
[4]   SI-GE ALLOYS - GROWTH, PROPERTIES AND APPLICATIONS [J].
ARIENZO, M ;
IYER, SS ;
MEYERSON, BS ;
PATTON, GL ;
STORK, JMC .
APPLIED SURFACE SCIENCE, 1991, 48-9 :377-386
[5]   HEMIACETAL ANIONS - A MODEL FOR TETRAHEDRAL REACTION INTERMEDIATES [J].
BAER, S ;
BRINKMAN, EA ;
BRAUMAN, JI .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (03) :805-812
[6]  
BARTMESS JE, 1993, NIST NEGATIVE ION EN
[7]   ELECTRON PHOTODETACHMENT FROM ORGANOPHOSPHIDE IONS - ELECTRON-AFFINITIES AND SUBSTITUENT EFFECTS IN ORGANOPHOSPHINES AND THEIR CONJUGATE RADICALS [J].
BERGER, S ;
BRAUMAN, JI .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (12) :4737-4743
[8]   3 METHODS TO MEASURE RH BOND-ENERGIES [J].
BERKOWITZ, J ;
ELLISON, GB ;
GUTMAN, D .
JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (11) :2744-2765
[9]   GAS-PHASE ACIDITIES OF BINARY HYDRIDES [J].
BRAUMAN, JI ;
EYLER, JR ;
BLAIR, LK ;
WHITE, MJ ;
COMISARO.MB ;
SMYTH, KC .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (24) :6360-&
[10]   HEATS OF FORMATION OF RADICALS AND MOLECULES BY A PHOTOACOUSTIC TECHNIQUE [J].
BURKEY, TJ ;
MAJEWSKI, M ;
GRILLER, D .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1986, 108 (09) :2218-2221