Sey.forth, J. (PhD)Gebeyehu, Zewdu2018-06-272023-11-092018-06-272023-11-091993-06http://etd.aau.edu.et/handle/12345678/4238The nitridomolybdenum(VI) complexes MoI'TOI (OPPh^)p and LMoUCl^j were synthesized from lioCl^CCH^CN)^, \ sodium azid, triphenylphosphine oxide and totrabutylaromonium chloride respectively in acetonitrile. The reaction of fioClr with sodium azide and triphenylphosphine oxide also gave i'ioNCl^ (OPPh^^j which is found to be anew way of preparing nitridomolybdenum complexes. The nitridomolybdenum complexes obtained were analytically pure. Attempts to synthesize nitridotungsten(VI) complexes by reaction of wCl^ with sodium azide in acetonitrile gave impure WNC1^(CH^ON)^ complex. Reaction of the recrystallized and decomposition product of WNCl^(CHyOll)p with triphenylphosphine oxide in methylenechloride gave pure VfifCl^(0PPh^)2 in low yield. Similar reaction of ViWCl^(CH^CN)p with tetrabutylammonium chloride an.d 2,2'-dipyridyl in acetonitrile gave only impure productsenNitridc Molybdenum and TungstenThesis