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1.
胍基可以通过改变氮上的取代基来调控配合物的空间及电荷效应,它们作为辅助配体用于稀土金属配合物的合成得到了人们的广泛关注。本文通过胍基锂盐和无水YbCl3以3:1的摩尔比进行复分解反应,合成了均配型稀土化合物[(CH2)5NC(N^iPr)2]3Yb,测得它为正交品系,  相似文献   

2.
A new tridentate Ni(Ⅱ) complex {Ni(H2O)3[Ph2(o-Ph-N-C7H7N)]PO}Cl2 was synthesized by the reaction of a new ligand Ph2(o-Ph-N-C7H7N)]PO with NiCl2 in CH3CH2OH. The complex was characterized by X-ray single crystal diffraction. The crystal structure of the complex belongs to monoclinic space group P22/n, a=1.259 28(9) nm, b=1.201 24(8) nm, c=2.039 03(14) nm, V=3.016 8(4) nm-3, Z=4, and R2=0.047 1, wR2=0.120 5. And a molecular CH2Cl2 is filled in the crystal structure. CCDC: 241832.  相似文献   

3.
The germanium atom in the title compound is in a distorted tetrahedral geometry defined by an oxygen donor, derived from an effectively monodentate carboxylate ligand, and three ipso‐carbon atoms from the phenyl substituents. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

4.
The molecular structure of the title compound, obtained by an adventitious phenyl group cleavage of Ph3SnOSnPh3 with triflic acid, reveals discrete centrosymmetric units of [Ph2(HO)SnOSn(O3SCF3)Ph2]2 that are loosely associated via hydrogen bonding. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   

5.
在乙醇钠存在下三苯基氯化锡或三苄基氯化锡水解得羟化三苯基锡 (1)或 (双三苄基锡 )氧化物 (2 )。其结构经元素分析、IR和1HNMR表征 ,X 射线单晶衍射测定了其晶体结构。 1为正交晶系 ,空间群P2 1/n,a =0 .830 0 0 (19)nm ,b =1.0 36 5 (2 )nm ,c =1.80 2 6 (4 )nm ,β =95 .4 72 (7)°,Z =4 ,V =1.5 5 0 7(6 )nm3 ,Dc=1.5 72g·cm -3 ,μ=1.6 4 0mm -1,F(0 0 0 ) =72 8,R1=0 .0 30 9,WR2 =0 .0 70 6 ,中心锡原子为五配位的三角双锥构型 ,且通过配位氧原子连成无限链状。 2为正交菱面体晶系 ,空间群R3 ,a =b =c =0 .96 36 (3)nm ,α =β =γ =84 .0 85 (3)° ,Z =1,V =0 .8812 (4 )nm3 ,Dc=1.5 0 8g·cm -3 ,μ =1.4 4 8mm -1,F(0 0 0 ) =4 0 2 ,R1=0 .0 36 0 ,WR2 =0 .0 5 4 2 ,由两个中心锡原子组成一个结构单元的四配位线性聚合体。  相似文献   

6.
The title complex displays a binuclear structure in which the geometries of tin atoms are different: one is cis‐trigonal bipyramidal (with a C3NS donor set) and the other is trans‐trigonal bipyramidal (C3NO). Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   

7.
Three homoleptic lanthanide complexes, [C6H5COCHC(CH3)N(p-ClC6H4)]3Ln(THF)n(n = 0, Ln = Yb(1); n = 0, Ln = Y(2); n = 1, Ln = Nd(3)), were synthesized by amine elimination reaction of Ln[N(SiMe3)2]3 with 1-phenyl-3-N-(p-chlorophenylimino)-1-butanone. These complexes crystallize in triclinic, space group P1 with a = 9.805(3), b = 14.831(6), c = 16.075(6) A, α = 111.996(9), β = 91.570(7), γ = 93.744(6)°, V = 2159.4(13) A3, Z = 2, D3 c = 1.515 g/cm, F(000) = 986, μ(MoKα) = 2.396 mm-1, R = 0.0360 and wR = 0.0850 for 9548 observed reflections with I 2σ(I) for complex 1; a = 9.861(5), b = 14.852(9), c = 16.111(9) A, α = 112.362(13), β = 91.949(11), γ = 93.678(14)°, V = 2173(2) A3, Z = 2, Dc = 1.377 g/cm3, F(000) = 924, μ(MoKα) = 1.570 mm-1, R = 0.0735 and wR = 0.1389 for 8015 observed reflections with I 2σ(I) for complex 2; and a = 9.308(3), b = 15.357(3), c = 17.419(4) A, α = 66.493(13), β = 88.61(2), γ = 86.664(19)°, V = 2279.4(9) A3, Z = 2, Dc = 1.499 g/cm3, F(000) = 1046, μ(MoKα) = 1.364 mm-1, R = 0.0843 and wR = 0.2280 for 8433 observed reflections with I 2σ(I) for complex 3. Each central metal in complexes 1 and 2 is six-coordinated by three nitrogen and three oxygen atoms from three β-ketoiminate ligands to give a distorted octahedral geometry, while the central metal in 3 is seven-coordinated by three nitrogen and three oxygen atoms from three β-ketoiminate ligands and one oxygen atom from the solvated THF molecule to complete a distorted monocapped trigonal prism.  相似文献   

8.
In mononuclear HgI2[(C5H4N)3N], mercury is tetrahedrally coordinated by two nitrogen atoms of a tris(2‐pyridyl)amine ligand and two iodides. The coordination moieties are connected by weak intermolecular Hg(II)···I interactions to give a one‐dimensional structure. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   

9.
林进  张萍  王昭煜  王宏根 《结构化学》1999,18(3):188-191
用X-射线晶体结构衍射法测定了[C5H4C(CH3)2CH2CH=CH2]Sm(OH)Cl·2MgCl2·4THF的晶体结构。它属三斜晶系,空间群为P^-1,a=10.773(2),b=12.836(3),c=15.478(3)A,a=111.46(3),β=107.71(3),γ=92.54(3)°,V=1868(1)A^3,Mr=827.91,Dx=1.472g/cm^3,μ=2.0006mm  相似文献   

10.
林进  王昭煜  王宏根 《有机化学》2000,20(3):377-381
用X-射线晶体结构衍射法测定了[C~5H~4C(CH~3)(C~3H~7)CH~2CH=CH~2]Gd(OH)Cl.2MgCl~2.4THF的晶体结构。它属三斜晶系,空间群为P1,a=1.2757(3),b=1.3571(3),c=1.3725(3)nm,α=69.22(3),β=84.91(3),γ=63.48(3)ⅲ,V=1.929(1)nm^3,Mr=862.75,Dx=1.423g/cm^3,μ=2.0832mm^-^1,F(000)=848,Z=2,R=0.096,ωR=0.113(I≥3σ(I))。分子中Gd原子的配位数为8,形成一个严重扭曲的八面体结构;两个Mg原子的配位情况相似,它们的配位数都是6,构成两个扭曲的八面体。这三个八面体通过三个共用平面联接。  相似文献   

11.
1 INTRODUCTION Crystal engineering principles have been employ- yed in recent years to produce a variety of coordi- nation networks[1], which are of great current interest not only for their potential properties as functional solid materials[2] in host-guest chemistry, ion ex- change and catalysis, but also for their often com- plicated intriguing architectures and topologies. Ra- tional control the construction of polymeric net- works remains a great challenge in crystal engineer- ing. Mu…  相似文献   

12.
The nitrate anion coordinates to the Sn? CH2? Sn unit of the title phosphonium stannate, [Ph4P]+ [(Ph2ClSn)2CH2 ·NO3]?, to give a six‐membered ring having the penta‐coordinated tin atoms in a trigonal bipyramidal geometry. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   

13.
The germanium atom is penta‐coordinated and adopts trigonal bipyramidal geometry. The 2‐benzo[b]thienyl group and the nitrogen atom each occupy an apical position with the transannular N → Ge bond distance being 2.180(4) Å. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   

14.
The Zn center in [bis(3‐pyridylacrylato)diaquazinc(II)]n is in a slightly distorted octahedral geometry within a cis‐N2O4 donor set. Each tridentate 3‐pyridylacrylate ligand links two Zn centers, resulting in the formation of a linear chain. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

15.
金属碲化物[Ga(en)~3]In~3Te~7晶体结构和性质的研究   总被引:4,自引:0,他引:4  
以有机溶剂热生长技术(solvothermaltechnique),即在180℃乙二胺(en)溶液中,以GaCl~3,InCl~3,Rb~2Te和Te在密闭容器中反应7d,制备出新的硫族化合物[Ga(en)~3]In~3Te~7。其阴离子基团为Zintlanion:~∞^2[In~3Te~7]^3^-,阳离子基团为Ga与乙二胺(en)的配合物:[Ga(en)~3]^3^+。以单晶X射线衍射技术解得该晶体结构属单钭晶系,空间群为P2~1/c,(no.14),{Ga(en)~3]In~3Te~7的晶胞数据:a=1.0460(2)nm,b=1.6981(3)nm,c=1.4994(6)nm,α=90°,β=95.46(2)°,γ=90°,V=2.651(1)nm^3,Z=4。热分析结果表明,该化合物的热分解分三步进行。光学性质测试表明它们是半导体材料,禁带宽度为1.65eV。  相似文献   

16.
In [bis(3‐pyridylacrylato)cadmium(II)]n, the local coordination geometry around the cadmium center is based on an octahedron. The carboxylate acts as a tridentate ligand by bridging two cadmium atoms and binds a third cadmium atom via the pyridyl group with the result that a two‐dimensional layered network is formed. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

17.
Each tin atom of the title compound is five‐coordinate, defined by 2C, 2Cl and 1O atoms, and shows a distorted square pyramidal configuration stabilized by intramolecular Sn· · ·O or Sn· · ·Cl interactions. Both nitrate anions coordinate the tin atoms in a monodentate mode. Copyright © 2003 John Wiley & Sons, Ltd.  相似文献   

18.
The two‐dimensional zinc phosphate [H3N(CH2)3NH3]0.5[Zn2(PO4)(HPO4)], has been synthesized hydrothermally using 1,3‐diaminopropane as the template. Its structure contains an inorganic framework with three‐, four‐, or six‐membered rings, built from PO4, PO3(OH) and ZnO4 tetrahedral moieties sharing vertexes. The protonated 1,3‐diaminopropane molecules interact with the framework through hydrogen bonds. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   

19.
The title complex, [CuL][CuCl2(NO3)2] [L=N,N,N′,N′,N″,N″-Hexaisopropyl-2, 2′, 2″-Nitrilotris(2,1-ethoxy)triacetamide], has been synthesized by using an amide-type tripodal ligand with Cu(NO3)2 and then characterized by X-ray single crystal structure analysis. It belongs to monoclinic,space group P21/c with a=1.522 7(2) nm,b=1.277 8(2) nm, c=2.184 5(4) nm, β=93.680(10)°, V=4.241 6(12) nm3, Z=4, Dc=1.401 Mg·m-3, μ=1.189 mm-1F(000)=1 880, and final R1=0.050 9, wR2=0.125 3. The results show a Cu(Ⅱ) ion was encapsulated by the three chains of the cup-like heptadentate ligand and four-coordinated by the central nitrogen atom and three oxygen atoms from the ligand. CCDC: 648900.  相似文献   

20.
Tetraammine Lithium Cations Stabilizing Phenylsubstituted Zintl-Anions: The Compound [Li(NH3)4]2[Sn2Ph4] Ruby-red, brittle single crystals of [Li(NH3)4]2[Sn2Ph4] were synthesized by the reaction of diphenyltin dichloride and metallic lithium in liquid ammonia at ?35°C. The structure was determined from X-ray singlecrystal diffractometer data: Space group, P1 , Z = 1, a = 9.462(2) Å, b = 9.727(2) Å, c = 11.232(2) Å, α = 66.22(3)°, β = 85.78(3)°, γ = 61.83(3)°, R1 (F ? 4σF) = 5.13%, wR2 (F02 ? 4σF) = 10.5%, N(F ? 4σF) = 779, N(Var.) = 163. The compound contains to Sb2Ph4 isosteric centres [Sn2Ph4]2? as anions which are connected to rods by lithium cations in distorted tetrahedral coordination by ammonia. These rods are arranged parallel to one another in the b,c-plane, but stacked along [100].  相似文献   

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