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[HoAl(CF_3COO)_2(CF_3CHOO)(C_2H_5)_2(C_4H_8O)_2]_2,Mr=1468.7,monoclinic,P 2_1/n,a=1.0084(4),b=1.8453(6),c=1.4501(6)nm,β=102.40(3)°,V=2.6355(1)nm~3,Z=2,D_c=1.81gcm~(-3),F(000)=1511,T=233K,Mo Kα radiation(λ=0.071069nm).R=0.052 for 6176 unique reflections[Ⅰ≥36(Ⅰ)].The structuralunits consist of dimeric molecules with the mixed ligand and central bimetallic atoms,which are polynuclearlanthanoid complexes containing aluminium.Ho-Ho'distance is 0.3619(1)nm.The coordination polyhedron ofHo can be described in terms of a distored bicap-prism. 相似文献
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Synthesis,CharacterizationandCrystalStructureofCyclotetramerofEuropium(Ⅱ)-areneComplex:[Eu(C_6Me_6)(AlCl_4)_2l_4·Me_4C_6H_2LiangH... 相似文献
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The reaction of NdCl_3 with lithium methylnaphthalene in 1:2 mole ratio in THF generates black powder.The powder reacts with cyclooctatetraene(COT)in THF to form the title complex.[Li(THF)_4Nd(C_8H_8)_2]·2THF crystallizes in the monoclinic space group P2/c with unit-cell dimensions a=1.7858(7)nm,h=1.3243(4)nm,c=1.8086(6)nm.β=106.52(4)°,V=4.10 nm~3 and D_c=1.268 g/cm~3 for Z=4.F(000)=1660,R=0.0774,R_n=0.0733.The complex consists of discrete ion-pair and two THF moleculesadduct.In the anion,the neodymium atom is coordinated by two COT rings.The structure of the cation showsthat the lithium atom is attached with THF molecules only. 相似文献
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本文给出了结构因子实部和虚部相等定理的新证明,并把它应用于具体空间群中,具体地得到了实、虚部相等的条件。还与《X—射线结晶学国际表》第一卷(以下简称国际表)做一比较,又发现国际表中三处不完善的地方。 相似文献
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The reaction of MeCpLnCl·2LiCl·nTHF with 2 equivalent of LiNPh_2 in THF,hexane andtoluene mixture solution gives the new complex[Li(DME)_2][(η~5-MeCp)Ln(NPh_2)_3](Ln=La,Pr,Nd)byextraction with DME.They have been characterized by elemental analysis,IR and NMR.The La complexcrystallizes in the monoclinic space group P2_1/c with α=1.8335(6)nm,b=1.6576(5)nm,c=1.7461(6)nm,β=96.04°,V=5.277 nm~2,Z=4,D_c=1.26g·cm~(-3),R=0.057 and R_w=0.048(1≥2.5σ(I_o))for 3378 reflec-tions.The complex consists of a pair of a cation and an anion.La~(3+) is coordinated by onemethylcyclopentadienyl and three diphenylamidos to form six-coordinate pseudotetrahedron with the meanLn-N and La-C(ring)distances of 0.2459(8)and 0.2843(11)nm,respectively. 相似文献
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SynthesisandCrystalStructureofYtterbiumTrichlorideComplexwithProlineMaAi-Zeng(马爱增);LiLai-Ming(李来明);JinSong-Chun(金松春);LinYong-... 相似文献
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