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The title complex crystallizes in the tetragonal system,space guoup I 4 with α = b=22. 41(1), c=12. 920(3) A. Mr = 682. 06,V = 6488. 5A3,Z=8,Dc= 1. 396g/cm3,F(000) = 2808,final R=0. 098 for 2668 independent reflection with Ⅰ > 3σ( Ⅰ ). This complex was Shown to contain two Fe(Ⅲ ) and one Mn( Ⅱ ) at the apices of an approximately equilateral triangle with a μ3-O bridge. The Mn (Ⅱ)atom and one Fe (Ⅲ )atom are each octahedrally coordinated by six oxygen atoms,while the other Fe atom coordinated by five oxygen atoms to form a square pyramid. The μ3-O is in the centre of the Fe2Mn triangle with the Fe(1)-O, Fe(2)-O and Mn-O distances of 1. 89(1), 1. 90(1) ,and 1. 91(1) A ,respectively. The IR spectrum was also studied.
The title complex crystallizes in the tetragonal system, space guoup I 4 with α = b = 22.41 (1), c = 12.920 (3) A. Mr = 682. 06, V = 6488. 5A3, Z = 8 , Dc = 1. 396g / cm3, F (000) = 2808, final R = 0. 098 for 2668 independent reflection with I> 3σ (Ⅰ). This complex was Shown to contain two Fe (Ⅲ) and one Mn ) at the apices of an approximately equilateral triangle with a μ3-O bridge. The Mn (Ⅱ) atom and one Fe (Ⅲ) atom are each octahedrally coordinated by six oxygen atoms, while the other Fe atom coordinated by five oxygen atoms to form (1) -O, Fe (2) -O and Mn-O distances of 1.89 (1), 1.90 (1) A square pyramid. The μ3-O is in the center of the Fe2Mn triangle with the Fe , and 1. 91 (1) A, respectively. The IR spectrum was also studied.