摘要
The title complex, [MnSc (DTPA) (H2O)2]·2H2O (DTPA is diethylenetriaminepentaacetic acid). has been synthesized in aqueous solution. Its crystal structure has been determined by four-circle X-ray diffractometer. The crystal is monoclinic with space group P21/n. The cell parameters are as follows:α=0.7886 (3) nm, b=1.5094 (5) nm. c=1. 8162(6) nm; β=100. 32(2)°, V= 2. 121 (2) nm3 , Z= 4 , Dc =1. 75 g/cm3. In the crystal,Sc3+ ion is coordinated by five oxygen atoms and three nitrogen atoms of DTPA with coordination number eight. taking a trigondodecahedron arrangement. Mn2+ ion is coordinated by four oxygen atoms from different DTPA and two oxygen atoms from H2O molecules with coordination number six, forming an octahedron. Each Sc(DTPA) is further connected with Mn2+ ions through four carboxyl groups of DPTA serving as bridges to form a three dimensional network.
The title complex, [MnSc (DTPA) (H2O)2]·2H2O (DTPA is diethylenetriaminepentaacetic acid). has been synthesized in aqueous solution. Its crystal structure has been determined by four-circle X-ray diffractometer. The crystal is monoclinic with space group P21/n. The cell parameters are as follows:α=0.7886 (3) nm, b=1.5094 (5) nm. c=1. 8162(6) nm; β=100. 32(2)°, V= 2. 121 (2) nm3 , Z= 4 , Dc =1. 75 g/cm3. In the crystal,Sc3+ ion is coordinated by five oxygen atoms and three nitrogen atoms of DTPA with coordination number eight. taking a trigondodecahedron arrangement. Mn2+ ion is coordinated by four oxygen atoms from different DTPA and two oxygen atoms from H2O molecules with coordination number six, forming an octahedron. Each Sc(DTPA) is further connected with Mn2+ ions through four carboxyl groups of DPTA serving as bridges to form a three dimensional network.
