THERMOCHEMISTRY OF HETEROATOMIC COMPOUNDS, XX. THEORETICAL CALCULATIONS OF THE VAPORIZATION ENTHALPIES OF ALKYLARSINES, STIBINES, AND BISMUTHINES

Abstract

The vaporization enthalpies (ΔH _vap ) of 26 primary, secondary, and tertiary alkylarsines, stibines, and bismuthines were calculated using the Trouton and Wadso equations and the first-order topological solvation index, ¹ χ ^S . The contributions to vaporization enthalpy for ─AsH ₂ (16.6 ± 0.2), > AsH (16.7 ± 0.1) groups and As(III)-atom in R ₃ As (13.7 ± 1.0), ─SbH ₂ (22.0 ± [2.0]), > SbH (19.0 ± [2.0]) groups and Sb(III)-atom in R ₃ Sb (12.7 ± 3.5), ─BiH ₂ (26.3 ± [2.2]), > BiH (24.3 ± [2.2]) groups and Bi(III)-atom in R ₃ Bi (16.2 ± 3.1 kJ mol⁻¹ ) were calculated.

Keywords:

• Arsines
• bismuthines
• molar refraction
• stibines
• topological solvation index
• vaporization enthalpy

Notes

^a Data of Dub. ³

^b The MR _D values were calculated on the additive scheme Equation (4)

^c Data of Johnson and Pechukas. ⁹

^d Data of Rosenbaum and Sandberg ¹⁰ and Long and Sackman. ¹⁵

^e Data of Long and Sackman. ¹⁵

^f Data of Ovchinnikov et al. ¹⁴

^g Data of Lantsch et al. ¹⁶

ⁱ Data of Lantsch et al. ¹⁷

^j Data of Cox and Pilcher. ⁶

^k Data of Baev et al. ¹⁸

^a Data of Cox and Pilcher. ⁶

^b Data of Lebedev and Mirosshnichenko. ¹²

^c Data of Ovchinnikov et al. ⁴

^d Calculated using only one value

^e Calculated using two values