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The complex [(C_6H_5)_2PCH_2CH_2P(C_6H_5)_2]Fe (NO)_2, was easily synthesized by the reaction of Fe (CO)_5, NaNO_2 and (C_6H_5)_2PCH_2CH_2P(C_6H_5)_2 (dppe) in methanol and determined by X—ray diffraction which denoted that the title complex has two crystallographically independent molecules in its asymmetric unit.
The complex [(C_6H_5) _2PCH_2CH_2P (C_6H_5) _2] Fe (NO) _2 was was synthesized by the reaction of Fe (CO) _5, NaNO_2 and (C_6H_5) _2PCH_2CH_2P (C_6H_5) _2 (dppe) in methanol and determined by X -ray diffraction which indicates that the title complex has two crystallographically independent molecules in its asymmetric unit.