Correlation of Relaxivity with Coordination Number in Six-, Seven-, and Eight-Coordinate Mn(II) Complexes of Pendant-Arm Cyclen Derivatives
作者:Sen Wang、T. David Westmoreland
DOI:10.1021/ic8003068
日期:2009.1.19
The syntheses and characterization of several complexes of Mn(II) with cyclen derivatives having variable numbers of pendant N-acetic acid or N-acetamide arms are reported. X-ray crystallographic results are presented for Mn(DOTAM)Cl2·2H2O (monoclinic C2/c, a = 18.5798(15), b = 13.6006(11), c = 10.5800(8) Å, β = 110.490(1)°, Z = 4), [Mn(DO3AM)][MnCl4]·EtOH (monoclinic P21/n, a = 8.366(8), b = 19.483(2)
报道了 Mn(II) 与具有可变数量的N-乙酸或N-乙酰胺侧链的循环衍生物的几种复合物的合成和表征。Mn(DOTAM)Cl 2 ·2H 2 O (单斜C 2/ c , a = 18.5798(15), b = 13.6006(11), c = 10.5800(8) Å, β = 110.490) 的X 射线晶体学结果(1)°, Z = 4), [Mn(DO3AM)][MnCl 4 ]·EtOH (单斜P 2 1 / n , a = 8.366(8), b = 19.483(2), c= 16.3627(16) Å, β = 99.254(2)°, Z = 4), Mn(H 2 DOTA) (单斜C 2/ c , a = 16.374(3), b = 6.6559(13), c = 16.750(3) Å, β = 98.381(3)°, Z = 4),分别显示 8-、7-和 6-坐标 Mn(II)。20