BORON TRIFLUORIDE - (7637-07-2) - Physical Properties • Chemical Properties • Solubility • Uses/Function • Reactions • Thermochemistry

Introduction

Name: boron trifluoride
* IUPAC
CAS Number: 7637-07-2
Chemical Formula: BF₃
Molar Mass: 67.8062096 g
Mass Percent: B 15.943 %; F 84.056 %

Classification

• inorganic

Bonding

Double Bonds: 0
Triple Bonds: 0
Sigma Bonds: 3
Pi Bonds: 0
Total: 3
Carboxyl Groups: 0
Hydroxyl Groups: 0
Geometry: trigonal planar
Hybridization: sp2
Bonding: ionic
Ionic Character: 58.79 %

Thermochemistry

ΔHf° (g): -271.75 kcal/mol 1 = -1,137.00 kJ/mol

S° (g): 60.71 cal/(mol•K) 2 = 254.01 J/(mol•K)

ΔGf° (g): -267.77 kcal/mol 3 = -1,120.35 kJ/mol

Reactions

6 LiH (s) + 8 BF3 (g) → B2H6 (g) + 6 LiBF4 (s) 4
Balz-Schiemann reaction from the production of fluorobenzene from aniline: 5

For More Information

Wikipedia

Sources

(1) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(2) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(4) - Halka, Monica and Nordstrom, Brian. Metals & Metalloids; Infobase Publishing: New York, NY, 2011; pg. 75.
(5) - Balz, Günther and Schiemann, Günther. Ber. 5, 1186–1190 (1927)