THE ENTHALPIES OF FORMATION OF (DIMETHYLAMINO)DICHLOROPHOSPHINE, BIS(DIMETHYLAMINO)CHLOROPHOSPHINE, AND TRIS(DIMETHYLAMINO)PHOSPHINE

Authors
ALMAYDAMA HMA FINCH A GARDNER PJ HEAD AJ
Citation
Hma. Almaydama et al., THE ENTHALPIES OF FORMATION OF (DIMETHYLAMINO)DICHLOROPHOSPHINE, BIS(DIMETHYLAMINO)CHLOROPHOSPHINE, AND TRIS(DIMETHYLAMINO)PHOSPHINE, Journal of Chemical Thermodynamics, 27(3), 1995, pp. 273-279
Citations number
16
Categorie Soggetti
Chemistry Physical
Journal title
Journal of Chemical Thermodynamics → ACNP
ISSN journal
00219614
Volume
27
Issue
3
Year of publication
1995
Pages
273 - 279
Database
ISI
SICI code
0021-9614(1995)27:3<273:TEOFO(>2.0.ZU;2-O
Abstract
The standard molar enthalpies of formation at the temperature 298.15 K of (CH3)(2)NPCl2(1), {(CH3)(2)N}2PCl(1), and {(CH3)(2)N}P-3(1) have b een determined by reaction calorimetry as -(286.3+/-2.4) kJ.mol(-1), - (220.1+/-2.3) kJ.mol(-1), and -(112.8+/-2.3) kJ.mol(-1), respectively. Enthalpies of vaporization have been obtained from vapour-pressure me asurements and the corresponding values of Delta(f)N(m)(degrees)(g) de rived as -(245.5+/-2.5)kJ.mol(-1), -(174.2+/-2.6) kJ.mol(-1), and -(71 .3+/-2.4) kJ.mol(-1), respectively. The values of the bond enthalpies D(P-Cl) and D(P-N) in substituted phosphines are discussed.