### Keyword ORBITALS

This keyword controls the atomic orbital choice.
Options:
SPHERICAL / CARTESIAN
 SPHERICAL Spherical atomic orbitals (, ) are used. This is the default. CARTESIAN Cartesian atomic orbitals (, ) are used.
Description:
In deMon2k the spherical (see 4.4.7 for the definition of real spherical harmonic Gaussians) and Cartesian atomic orbitals have the general form (without normalization):
 (16) (17)

Because spherical orbitals have no linear dependencies, they are the recommended choice for most applications. See 4.4.7 regarding CARTESIAN orbitals in the case of an atom.