Recently, in the study of systems with labile electronic states a new direction has appeared, and this is the elucidation of the effects of the external dc electric field in the magnetic, spectroscopic and polarizability characteristics of these systems. It has been demonstrated that the pronounced change of the system behavior under action of the dc electric field opens new perspectives for future practical applications of the mentioned systems. The most pronounced effects are produced by the dc electric field if its characteristic energy is of the order of or exceeds the values of the intrinsic system parameters. Since for electronic states possessing a non-vanishing dipole moment the characteristic energy of interaction with an electric field is proportional to the product of this moment and the electric field intensity, the most pronounced effects can be observed for systems with significant dipole moments in their states and high dc electric field intensities. From this point of view mixed valence compounds with the electronic structure of the type of d d+ - are attractive since the difference in the dipole moments in the states of these systems arising from configurations d - d d - d a d d is appreciable. Therefore, in the present communication we focus on dc electric field effects in mixed valence molecular compounds that possess the electronic structure of the type of  d d+ - with two migrating electrons. The suggested model takes into account all three cluster configurations above mentioned, the intracluster Heisenberg exchange characterized by the parameter J, the Coulomb interaction (parameter U) that leads to the difference in the energies of configurations a d d and  d d d d + +, the intracluster mono- (parameter p) and bielectronic transfer (parameter t) as well as the interaction of the cluster with the external electric field ( parameter 0 d E ). We demonstrate that increase in the field intensity leads to the change of the spin of the ground cluster state and as a consequence to pronounced changes in the cluster magnetic (Fig.1) moment. The applied field also significantly affects the cluster dipole moment (Fig.2). The results obtained show that the external electric field gives an unique possibility of manipulation by the polarizability and magnetic characteristics of mixed-valence clusters with two-electron transfer.