BONDING IN C1 AND C2 FLUORIDES

被引：25

作者：

EHLERT, TC

机构：

[1] Department of Chemistry, Marquette University, Milwaukee

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1969年 / 73卷 / 04期

关键词：

D O I：

10.1021/j100724a032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A Farlow-type reaction involving manganese trifluoride and graphite has been used to generate the gaseous species (CF2)n=1,2,3..., CF3, and C2F2 under equilibrium conditions. By mass spectrometric methods it has been found that ΔHf°298 for CF2(g), CF3(g), and C2F2(g) are -41.1 ± 2, -102.5 ± 3, and -45 ± 6 kcal mol-1, respectively. These and other data show that D°298(CF3-F), -(CF2-F), -(CF-F), and -(C-F) are 139.4, 80.2, 123.7, and 126.0 (all ±3) kcal mol-1, respectively. The C=C bond in difluoroacetylene is found to be 60 kcal weaker than that in acetylene.

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页码：949 / &

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