Using ab initio (Hartree-Fock and local density approximation) and semiempi
rical (Austin Model 1) calculations we have studied the energetics and elec
tronic structures of N+B and N+P complexes. We have found that these comple
xes are electrically inactive. The energy gains are 1.6 eV for the N+B coup
ling and 2.4 eV for the N+P pairing. The N-P and N-B interatomic equilibriu
m distances are about 3.5 Angstrom for the both complexes.