The titled compound (EPHZ) can be compared with 5:6:11:12:-tetrahydro-2:8-dimethylphenhomazine (PHZ) and 5:6:11-trihydro-2:5:12-trimethylphenhomazine (MPHZ) in its structural characteristics on coordination to several transition metals. In EPHZ both the amines are bridged through the methylene group and thus providing more room for fifth and sixth coordination. EPHZ forms bis-complexes with cobalt (II), cooper (II), mercury (II) and cadmium (II). The molecular structure of these complexes is assigned on the basis of analytical, spectroscopic, magnetic, and conductance data. The thermogravimetric studies are reported and discussed. The ligand is characterized by its mass spectra.