The interacting boson model hamiltonian isused to describe the energy spectrum, B(E2) value andB(E2) branching ratios for inter-band and intra-bandtransitions for three quasi-bands in 146Sm. It is found thatIBM-1 reproduces the observed complex nuclear structurevery well. The agreement between the theoretical resultsand the observed data are satisfactory for all possibleobserved nuclear properties. Present results are comparedwith the dynamic pairing-plus-quadrupole model, IBM-2and previous interacting boson approximationcalculations
