检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:郭华东[1] 姚英明[1] 邓明宇[1] 张勇[1] 沈琪[1]
出 处:《中国稀土学报》2005年第6期650-653,共4页Journal of the Chinese Society of Rare Earths
基 金:国家自然科学基金资助项目(20272040)
摘 要:茂基稀土胺化物(MeCp)2YbNPh2(THF)与异氰酸正己酯(n-HexylNCO)按1∶1摩尔比反应,分离出产物{(MeC5H4)2Yb[OC(NPh2)N(n-hexyl)]}2。产物经元素分析和核磁共振表征,并测定了其晶体结构。配合物属三斜晶系,R-3空间群,晶胞参数为a=2.9533(11)nm,b=2.9533(11)nm,c=1.5873(6)nm,V=11.9896(80)nm3,Z=9,Dc=1.562 mg.m-3,μ=3.536 mm-1(Mo Kα),F(000)=5670,R=0.034,Rw=0.064。该化合物具有二个对称氧桥的双分子结构,并存在着由氮原子向中心金属镱分子内配位而形成的三环骨架,中心金属镱的配位数是九,整个分子呈中心对称。Bis ( methylcyclopentadienyl ) lanthanide amido complex (MeCp)2YbNPh2 (THF) reacted with n-hexyl carbimide (n-HexylNCO) in 1:1 (molar ratio) to give {(MeC5H4)2Yb[OC(NPh2)N(n-hexyl)]}2(1). Complex 1 was characterized by elemental analyses and X-ray diffraction. The title complex belongs to trigonal system and R-3 space group. Its unit cell parameters are a = 2. 9533 (11) nm, b = 2. 9533 ( 11 )nm, c = 1. 5873 (6) nm, V = 11. 9896 (80) nm^3, Z=9, Do = 1. 562 mg·m^ -3, μ =3.536 mm^-1(Mo Ka), F(000) =5670, R =0.034, Rw =0.064. It is a dimeric structure with two symmetrical bridged oxygen atoms. Nitrogen atom is coordinated to the ytterbium atom to form a tricyclic backbone. The coordination number of ytterbium is 9. The whole molecule shows central symmetry.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.117