[en] The term diagram of the ₅₀¹¹⁴Sn₆₄ magic nucleus could be enlarged by 77 newly identified gamma transitions and 47 novel energy levels identified by way of a gamma-gamma coincidence measurement using the OSIRIS hexahedral spectrometer and by means of the high-spin reaction of ¹⁰⁰Mo(¹⁸O,4n)¹¹⁴Sn at an injection energy of E(¹⁸O) = 70 MeV. Spins up to an excitation energy of ∝ 11.2 MeV and up to a maximum spin of 23 h have been occupied. For identification of the multipolarities of low-intensity γ-transitions which deplete the high-spin states, γγ-angular correlations have been evaluated, and 26 energy levels could be clearly assigned for the first time to measured spin values. For an interpretation of further nuclear structural states of ¹¹⁴Sn theoretical calculation have been made based on the shell model of nucleus. (orig./DG)