The title complex [Mn(pht)2(phen)] (Hpht=5,5-diphenylimidazoline-2,4-dione, phen=1,10-phenanthroline)was synthesized and characterized by elemental analysis, IR and X-ray diffraction single-crystal structure analysis.The compound crystallizes in the monoclinic system, space group C2/c with a=2.631 5(16) nm, b=0.924 5(6) nm, c=1.550 8(10) nm, β=116.231(7)°;V=3.384(4) nm3, Mr=737.66, Z=4, F(000)= 1 524, Dc=1.448 g·cm-3,μ=0.446 mm-1,the final R=0.069 9 and wR=0. 195 3. The complex was valued for its antimicrobial activity against some bacteria in vitro. It was found to be active against the four test bacterial organisms. CCDC: 616309.
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