(C_(26)H_(40)N_2O_4)[Ln(NO_3)_5H_2O]的合成及其铕缔合物的晶体结构  

Synthesis of (C 26 H 40 N 2O 4)[Ln(NO 3) 5H 2O] and Crystal Structure of (C 26 H 40 N 2O 4)[Eu(NO 3) 5H 2O]

作　　者：陈朝晖[1] 金林培[1] 郭建权[1] 

机构地区：[1]北京师范大学化学系

出　　处：《高等学校化学学报》1998年第4期502-506,共5页Chemical Journal of Chinese Universities

基　　金：国家攀登计划项目;国家自然科学基金

摘　　要：合成了４个新型的稀土化合物（Ｃ２６Ｈ４０Ｎ２Ｏ４）［Ｌｎ（ＮＯ３）５Ｈ２Ｏ］（Ｌｎ＝Ｐｒ，Ｎｄ，Ｓｍ，Ｅｕ），采用元素分析和红外光谱表征．用四圆衍射仪测定了其中（Ｃ２６Ｈ４０Ｎ２Ｏ４）［Ｅｕ（ＮＯ３）５Ｈ２Ｏ］的晶体结构，属三斜晶系，Ｐī空间群，晶胞参数：ａ＝０．９１００（４）ｎｍ，ｂ＝１．３５６０（３）ｎｍ，ｃ＝１．６４６３（４）ｎｍ；α＝６８．６２（２）°，β＝７４．８４（３）°，γ＝８７．５０（２）°；Ｚ＝２．中心铕离子由５个硝酸根的１０个氧原子和１个水分子中的氧原子配位，配位数是１１．１，７，１０，１６－四氧－４，１３－二氮杂－Ｎ，Ｎ′－二苄基环十八烷（Ｎ，Ｎ′－二苄基穴醚（２，２））未参与配位．Four novel rare earth compounds H 2L[Ln(NO 3) 5H 2O](Ln=Pr,Nd,Sm,Eu; L= C 26 H 38 N 2O 4 : 1,7,10,16 tetraoxa 4,13 diaza N , N ′ dibenzyl cyclooctadecane) were synthesized and characterized by elemental analysis and IR. The crystal structure of C 26 H 40 N 2O 4[Eu·(NO 3) 5H 2O] was determined by X ray analysis. The crystal belongs to triclinic, P ī space group with cell dimensions: a =0.910 0(4) nm, b =1.356 0(3) nm, c =1.646 3(4) nm; α =68.62(2)°, β =74.84(3)°, γ =87.50 (2)°; Z =2. The central europium ion is bonded to ten oxygen atoms from the five nitrate groups and one oxygen atom from a water molecule. Coordination number is 11. 1,7,10,16 Tetraoxa 4,13 diaza N , N ′ dibenzyl cyclo octadecane is not bonded to the europium ion.

关 键 词：稀土 二苄基穴醚 配合物 缔合物 镨 钕 钐 铕 

分 类 号：O614.33[理学—无机化学]