【摘要】 在水溶液中培养了甘氨酸镨、钕的针状晶体,元素分析结果表明可用Ln（Gly）₃Cl₃·3H₂O表示（Ln为Pr,Nd;Gly为甘氨酸）。用X射线衍射方法测定了Pr（Gly）₃Cl₃·3H₂O的单晶结构,其结构式为{[Pr（Gly）₃·（H₂O）₂]·Cl₃·H₂O}_n,属正交晶系,空间群P2:2:2₁,每一晶胞中有4个络合单元,形成一维链式聚合物·晶胞参数如下:α=4.779（1）,b=12.052（3）,c=30.953（11）。络合单元中镨为九配位,其配位多面体为畸变的三冠三角棱柱体。更多还原

【Abstract】 The triglycinato-diaquo-lanthanide chlorides [Ln(Gly) 3 (H2O)2].Cl3. H2O have been synthesized in the aqueous solution (Ln = Pr, Nd),The crystal structure of this complex compound has been determined by X-ray analysis as follws:Space group P212121; a = 4.779(1), b=12.052(3), c = 30.953(11) A; Z = 4. The crystal is a one-dimentional chain complex of infinite length with three glycinic acid, NH3+CH2COO-, serving as bridging groups connecting neighboring Pr atoms (See Fig. 2).In addrtion, there are two H2O molecules coordinated to each Pr atom, so that the coordination number of Pr is nine, forming a distorted tricapped trigon-alprism. There is another H3O molecule not coordinated to Pr. The three Cl-anions are in the neighbourhood of -NH3+ cations. There is no direct metal-metal bond between Pr atoms.更多还原