PRESSURE-DEPENDENT ISOTOPE EFFECT IN THE REACTION OF SILYLENE (SIH2, (1)A(1)) WITH ACETYLENE AND [H-2(2)]ACETYLENE

被引:21
作者
BECERRA, R
FREY, HM
MASON, BP
WALSH, R
机构
[1] UNIV READING,DEPT CHEM,POB 224,READING RG6 2AD,BERKS,ENGLAND
[2] CSIC,INST QUIM FIS ROCASOLANO,E-28006 MADRID,SPAIN
关键词
D O I
10.1039/c39930001050
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Direct, time resolved measurements of absolute rate constants for reaction of SiH2(1A1) with C2H2 and C2D2 have revealed a pressure (and temperature) dependent isotope effect characteristic of an association process yielding an intermediate (silirene) which undergoes, amongst other reactions, a degenerate isotopic scrambling process.
引用
收藏
页码:1050 / 1052
页数:3
相关论文
共 11 条
[1]   SIMILARITIES AND DIFFERENCES IN THE ADDITION-REACTIONS OF SILYLENE (SIH2, (1)A(1)) AND METHYLENE (CH2, (1)A(1)) TO C2H4 [J].
ALRUBAIEY, N ;
FREY, HM ;
MASON, BP ;
MCMAHON, C ;
WALSH, R .
CHEMICAL PHYSICS LETTERS, 1993, 204 (3-4) :301-305
[2]  
ALRUBAIEY N, UNPUB
[3]   TEMPERATURE-DEPENDENCE OF THE REACTION OF SIH2 WITH D2 [J].
BAGGOTT, JE ;
FREY, HM ;
KING, KD ;
LIGHTFOOT, PD ;
WALSH, R ;
WATTS, IM .
JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (14) :4025-4027
[4]   ABSOLUTE RATE CONSTANTS FOR THE GAS-PHASE REACTIONS OF SILYLENE WITH SILANE, DISILANE AND THE METHYLSILANES [J].
BAGGOTT, JE ;
FREY, HM ;
LIGHTFOOT, PD ;
WALSH, R ;
WATTS, IM .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (01) :27-33
[5]  
BECERRA R, IN PRESS INT J CHEM
[6]   THEORETICAL-STUDIES OF 3-MEMBERED RING COMPOUNDS Y2H4X (Y=C, SI, X = CH2, NH, O, SIH2, PH, S) [J].
BOATZ, JA ;
GORDON, MS .
JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (08) :3025-3029
[7]   THEORETICAL-STUDIES OF THE METALLACYCLOPROPENES C-[MX2C2H2] (M = C, SI, GE, SN - X = H, F) [J].
BOATZ, JA ;
GORDON, MS ;
SITA, LR .
JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (14) :5488-5493
[8]   ABSOLUTE RATE CONSTANTS FOR SILYLENE REACTIONS WITH HYDROCARBONS AT 298-K [J].
CHU, JO ;
BEACH, DB ;
JASINSKI, JM .
JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (20) :5340-5343
[9]   MECHANISM AND KINETICS OF THE SILANE DECOMPOSITION IN THE PRESENCE OF ACETYLENE AND IN THE PRESENCE OF OLEFINS [J].
ERWIN, JW ;
RING, MA ;
ONEAL, HE .
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 1985, 17 (10) :1067-1083