Tetrahedral Geometry and the Dipole Moment of Molecules

Sara N. Mendiara and L. J. Perissinotti
Departamento de Química,Facultad de Cs. Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, Mar del Plata 7600, Argentina
J. Chem. Educ., 2002, 79 (1), p 64
DOI: 10.1021/ed079p64
Publication Date (Web): January 1, 2002

Abstract

We have made a short and simple derivation of the bond angle in tetrahedral compounds. It is based on the knowledge of the permanent dipole moment of molecules. We use geometry, projections, trigonometry, and the bond and dipole moments. We have developed a detailed classroom methodology. We calculate the bond angle of symmetric tetrahedral molecules, where the dipole moment is zero. Afterward, we calculate angles and bond moments in molecules like ammonia and chloromethane.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Organic Chemistry

Keywords (Pedagogy):

Problem Solving / Decision Making

Keywords (Subject):

Molecular Properties / Structure
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History

  • Received: August 03, 2009

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