THE ENTHALPIES OF FORMATION OF BIS(DIMETHYLAMINO)CYANOPHOSPHINE, (DIMETHYLAMINO)DICYANOPHOSPHINE, AND TRICYANOPHOSPHINE

被引：5

作者：

ALMAYDAMA, HMA ^{[1
]}

FINCH, A ^{[1
]}

GARDNER, PJ ^{[1
]}

HEAD, AJ ^{[1
]}

机构：

[1] UNIV LONDON,ROYAL HOLLOWAY & BEDFORD NEW COLL,DEPT CHEM,EGHAM TW20 0EX,SURREY,ENGLAND

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 1995年 / 27卷 / 06期

关键词：

D O I：

10.1006/jcht.1995.0059

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

]The standard molar enthalpies of formation at the temperature 298.15 K of {(CH3)(2)N}2PCN(1), (CH3)(2)NP(CN)(2)(I), and P(CN)(3)(cr) have been determined by reaction calorimetry as -(0.4 +/- 3.2) kJ . mol(-1), (189.3 +/- 5.0) kJ . mol(-1), and (373.1 +/- 6.8) kJ . mol(-1), respectively. Enthalpies of vaporization have been obtained from vapour-pressure measurements for the first two compounds and the corresponding values of Delta(f)H(m)(o)(g)/(kJ . mol(-1)) derived as (54.2 +/- 3.5), (228.7 +/- 5.5), and (448.4 +/- 7.4), respectively. The values of the bond enthalpies D(P-CN) in the cyanophosphines are discussed.

引用

页码：575 / 584

页数：10

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