Mocoeffs

mocoeffs is a list of rank 2 arrays containing the molecular orbital coefficients. The list is of length 1 for restricted calculations, but length 2 for unrestricted calculations. For the array(s) in the list, the first axis corresponds to molecular orbitals, and the second corresponds to basis functions.

Examples
mocoeffs[0][2,5] -- The coefficient of the 6th basis function of the 3rd alpha molecular orbital

mocoeffs[1][:,0] -- An array of the 1st basis function coefficients for the every beta molecular orbital

Note: For restricted calculation, mocoeffs is still a list, but it only contains a single rank 2 array so you access the matrix with mocoeffs[0].