九配位K_3[Ho(nta)_2(H_2O)]·5H_2O和八配位NH_4[Ho(cdta)(H_2O)_2]·4.5H_2O配合物的合成及结构  

Synthesis and Structures of Nine-Coordinated K_3[Ho(nta)_2(H_2O)]·5H_2O and Eight-Coordinated NH_4[Ho(cdta)(H_2O)_2]·4.5H_2O

作　　者：王君[1] 张向东[1] 贾卫国[1] 李慧芳[1] 领小[1] 

机构地区：[1]辽宁大学化学系,沈阳110036

出　　处：《化学学报》2002年第8期1452-1458,共7页Acta Chimica Sinica

摘　　要：报道了稀土金属HoIII离子氨基多羧酸 (nta =氨基三乙酸 ,cdta =反式 1,2 环己二氨四乙酸 )配合物的合成及分子结构和晶体结构的测定 .具体结果如下 :(a)分子式K3[Ho(nta) 2 (H2 O) ]·5H2 O ,单斜晶系 ,C2 c空间群 ,a =1 5 36 4 (8)nm ,b =1 2 881(7)nm ,c=2 6 16 3(13)nm ,β =96 .14 0 (9)°,V =5 4 16 (5 )nm3,Z =8,Dc=1 932g cm3,μ=3 6 35mm- 1 和F(0 0 0 ) =2 94 4 .其R和Rw 值分别为 0 0 310和 0 0 6 75 (对 4 5 0 9个独立的衍射点 ) ,R和Rw 值分别为0 0 4 4 2和 0 0 70 7(对所有 10 336个衍射点 ) .K3[Ho(nta) 2 (H2 O) ]·5H2 O配合物中 ,HoIIIN2 O7部分是一个九配位单帽四方反棱柱体结构 .(b)分子式NH4 [Ho(cdta) (H2 O) 2 ]·4 5H2 O ,三斜晶系 ,P 1,空间群 ,a =0 .86 36 (3)nm ,b =1 0 0 72(3)nm ,c=1 4 4 5 7(5 )nm ,α =88 382 (5 )° ,β=75 2 75 (5 )°,γ =88 382 (5 )° ,V =1 2 15 4 (7)nm3,Z =2 ,Dc=1 6 5 7g cm3,μ =3 315mm- 1 和F(0 0 0 ) =6 0 6 .其R和Rw 值分别为 0 0 2 83和 0 0 70 8(对 4 2 0 3个独立的衍射点 ) ,R和Rw 值分别为 0 0 32 5和 0 0 730 (对所有 4 5 95个衍射点 ) .NH4 [Ho(cdta) (H2 O) 2 ]·4 5H2 O配合物中HoIIIN2 O6 部分是一个八配位四方?The crystal structures of two Ho III complexes with nta (nitrilotriacetic acid) and cdta ( trans 1,2 cyclohexanediaminetetraacetic acid) ligands have been reported, respectively. The crystal data are as follows: (a) K 3[Ho(nta) 2(H 2O)]·5H 2O, monoclinic system, C 2/ c space group, a =1 5364(8) nm, b =1 2881(7) nm, c =2 6163(13) nm, β = 96 140(9)°, V =5 416(5) nm 3, Z =8, D c=1 932 g·cm -3 , μ =3 635 mm -1 , F (000)=2944, R =0 0310, R w=0 0675 for 4509 unique reflections and R =0 0442, R w=0 0707 for all 10336 reflections. The Ho III N 2O 7 part in the complex anion [Ho(nta) 2(H 2O)] 3- is a pseudo monocapped square antiprismatic nine coordinated structure. (b) NH 4[Ho(cdta)(H 2O) 2]·4.5H 2O, triclinic system, P 1 space group, a =0 8636(3) nm, b =1 0072(3) nm, c =1 4457(5) nm, α = 88 382(5)°, β =75 275(5)°, γ =88 380(5)°, V =1 2154(7) nm 3, Z =2, D c=1 657 g/cm 3, μ =3 315 mm -1 , F (000) =606, R =0 0283, R w=0 0708 for 4203 unique reflections and R =0 0325, R w=0 0730 for all 4595 reflections. The Ho III N 2O 6 part in the complex anion [Ho(cdta)(H 2O) 2] - is a pseudo square antiprismatic eight coordinated structure.

关 键 词：[K3[Ho(nta)2(H2O)]·5H2O NH4[Ho(cdta)(H2O)2]·4.5H2O 氨基三乙酸 钬(Ⅲ) 反式-1 2-环己二氨四乙酸 配合物 结构 

分 类 号：O641.4[理学—物理化学]