Synthesis, Crystal Structure and Reactivity of (2,4-C_7H_(11) )_2Yb·DME

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｏｒｇａｎｏｍｅｔａｌｌｉｃｃｈｅｍｉｓｔｒｙｏｆｌａｎｔｈａｎｉｄｅｍｅｔａｌｓｉｎｌｏｗｏｘｉｄａｔｉｏｎｓｔａｔｅｓｉｓｃｕｒｒｅｎｔｌｙｕｎ ｄｅｒｇｏｉｎｇａｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔ.Ｔｈｅｓｔｕｄｉｅｓｏｎｄｉｖａｌｅｎｔｍｅｔａｌ ｃｏｍｐｌｅｘｃｈｅｍｉｓｔｒｙｈａｖｅｌｅｄｔｏａｖａｒｉｅｔｙｏｆｎｅｗｃｌａｓｓｅｓｏｆｃｏｍｐｌｅｘｅｓａｎｄｒｅａｃｔｉｖｉｔｙｐａｔｔｅｒｎｓ[14 ] .Ｔｈｅｉｍｐｏｒｔａｎｃｅｏｆｓｔｅｒｉｃｆａｃｔｏｒｓｃ…     

(η~5-C_9H_7)_2Yb(THF)_2的晶体结构

双(茚基)镱(Ⅱ)四氢呋喃配合物(η~5-C_9H_7)_2Yb(THF)_2的晶体属单斜晶系,C_c空间群,晶体学参数a=13.506(4),b=11.081(2),c=15.577(5),β=92.68(3)°,V=2329(1),D_c=1.56g/cm~3,Z=4,μ=42.4cm~(-1),F(000)=1088,最终编离因子R=0.029,R_w=0.031。中心离子Yb~(2+)与两个茚基以η~5形式成键且与两个四氢呋喃中的氧成键,茚基的两个质心和四氢呋喃中的两个氧形成扭曲的四面体,Yb~(2+)在四面体的中心。Yb~(2+)的配位数为8。Yb~(2+)到质心In1的距离为2.52,到质心In2的距离为2.40。Yb~(2+)到O(1)的键长为2.356(7),到O(2)的键长为2.417(5)。     

Crystal Structure of Bridged Dimer Complex of [Yb (H_2O)) (acac)_2 (Ac)]_2

1INTRODUCTIONTheacetylacetonatoisanexcellentbidentateligand.Withittherareearthmetalionscanformsomeseriesofcomplexes,suchasLn(acac)3.nH,O(n=1～4)andLn-(acac)4etc.[1-5i.lntheeventletasampleofthecomplexLn(acac)3.3H,Odis-solveinacetylacetonewhichmixeswithaceticacidforrecrystallization.Asaresultasubstitutionreactionofligandsinthesolutionarises.Anacetylacetonatoandacoor-dinatedwatermolecu1eofLn(acac),.3H,Oaresubstitutedbytwoacetatosandanon-coordinatedwatermoleculeisremoved.Amixedligandandbr…     

On the Crystal Structure of [Cu(OH)_2(H_2O)_2(4-C_5H_4NCOOH)_2]

In their report of the crystal structure of the compound claimed to be [Cu(OH)2(H2O)2(4- C5H4NCOOH)2], the authors did not give any experimental details on the location and refinement of the water and hydroxyl hydrogen atoms[1]; they had assumed the presence of the carboxylic -CO2H unit on the basis of the infrared stretching frequency at 1700 cm-1 that is only of medium intensity. The cell constants for the compound are, in fact, identical, with those documented for tetraaquabis(isonicot…     

Crystal and Molecular Structure of(η~5-C_5H_5)_2Yb(NC_4H_4)(OC_4H_8)

ＣｒｙｓｔａｌａｎｄＭｏｌｅｃｕｌａｒＳｔｒｕｃｔｕｒｅｏｆ（η~５－Ｃ_５Ｈ_５）_２Ｙｂ（ＮＣ_４Ｈ_４）（ＯＣ_４Ｈ_８）ＷａｎｇＳｈａｏ－Ｗｕ；ＹｕＹｏｎｇ－Ｆｅｉ；ＨｕＪｉ－ｐｉｎｇ；ＹｅＺｈｏｎｇ－Ｗｅｎ（ＩｎｓｔｉｔｕｔｅｏｆＯｒｇａｎｉｃＣｈ...     

Synthesis and Structure of 〔Cu(μ-C_6H_5COO)_2(C_4H_8O)〕_2

1mTRODUCT1ONBinuclearcoppercomplexesareimportantnotonlyincoordinationchemistryandmagnetostructuralstudiesbutalsoinpracticalapplication.tliInanattempttoseekthedisPersionandemulationreagentsofCWM(themixtureofcoalandwater),thetitlecomP0undwassynthesizedbyanoxidativepreparationmethodt2i,whosesynthesisandstructurearedifferentfromthosedescribedbyWangetoft3i.Here,0nlythesynthesisandstructureofthetitlecomP0undarereportedandthestudiesofitsappli-cationareinprogress.2EXPERIMENTAL2.1Preparati0n…     

Syntheses and Anti-inflammatory Action of (η-C_5H_5)_2Ti(Cin)_2 and (η-C_5H_5)_2Ti(Tzea)_2

ＩｎｔｒｏｄｕｃｔｉｏｎＳｉｎｃｅＫ ｐｆｄｉｓｃｏｖｅｒｅｄｔｈａｔｄｉｃｙｃｌｏｐｅｎｔａｄｉ ｅｎｙｌｔｉｔａｎｉｕｍｄｉｃｈｌｏｒｉｄｅｅｘｈｉｂｉｔｅｄａｎｔｉｔｕｍｏｕｒａｃｔｉｏｎｉｎ1979,1ａｌａｒｇｅｎｕｍｂｅｒｏｆｃｙｃｌｏｐｅｎｔａｄｉｅｎｙｌｔｉｔａｎｉｕｍｃｏｍ ｐｌｅｘｅｓｂｅａｒｉｎｇｄｉｆｆｅｒｅｎｔｓｕｂｓｔｉｔｕｅｎｔｓｈａｖｅｂｅｅｎｓｙｎｔｈｅ ｓｉｚｅｄ .2 ,3Ｔｈｅｅｘｐｅｒｉｍｅｎｔａｌｄａｔａｒｅｖｅａｌｅｄｔｈａｔ (Ｃｐ) 2 ＴｉＸ2(Ｘ =ｈａｌｏｇｅｎ ,ｐ…     

On Studies of Crystal Structure and Electron Paramagnetic Resonance of(η~5-C_5H_5)_2 Nb[CH_2Si(CH_3)_3]_2

(η5-C6H5)2 NbcCH2Si(CH3)3]2 has been prepared and characterized by X-ray diffraction method and solution and frozen-glass EPR.The compound crystallizes in a monoclinic space group P21/O with lattice parameters a=13.291(A),b=12.406(A),σ=13.901A,β=115.40,V=2070A and Z=4 Full-matrix least-squares refinement of the diffractometry data led to final discrepancy indices of K(F0)=0.043,R(F02)=0.057,Rw(F02)=0.071.From computer simulation of the frozen-glass spec trum of the compound,the principal components of the g and T tensors are gx=1.9840.gy=2.0075,gz=2.0020,Tx=-89.2G,Ty=-136.9G,Tz=-50.0G.The observed anisotropy for the hyperfine interaction arises from the admixture of 4dz2 and 4dx2-y2 character in the HOMO.The ratio of mixing coefficients a2/b2=10.3.     

Studies on the Synthesis and Structure of Cycl opentadienylruthenium Derivatives——Crystal and Molecular Structure of (η~5-C_5Me_4Et)_2Ru

The title compound was synthesized by refluxing RuCl3 with cyclopentadiene in methanol. It crystallizes in space group C5-Pn with cell dimensions: a=0. 9735(4) nm, b=0. 8604(3) nm, c=1. 2261(6) nm, β=94. 83(3), and Z = 2. Structure was solved by Patterson method and Fourier functions, and was refined to final R value of 0. 0365 based on 1872 observable reflections. In contrast to the staggered conformation of decamethylferrocene, this molecule adopts the eclipsed comformation. The conformation difference was explained by the polarizability and metal atom size.     

Synthesis and Crystal Structure of (C_6N_3H_(18))_2Ti_4O_4(C_2O_4)_7·4H_2O

1 INTRODUCTION The open-framework inorganic materials have been synthesized before the early 1980s[1]. Parti- cularly, metal phosphates have been investigated widely during the past few years[2, 3]. In recent years, considerable efforts have been devote…     

Synthesis,Crystal Structure and Studies on the Noncovalent Interaction of [Zn(BpheO)_2(phen)]_2·2CH_3OH·3H_2O

Ｓｙｎｔｈｅｓｉｓ,ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅａｎｄＳｔｕｄｉｅｓｏｎｔｈｅＮｏｎｃｏｖａｌｅｎｔＩｎｔｅｒａｃｔｉｏｎｏｆ［Ｚｎ（ＢｐｈｅＯ）２（ｐｈｅｎ）］２·２ＣＨ３ＯＨ·３Ｈ２ＯＳＨＥＮＬｉａｎｇ＊ａｎｄＳＨＥＮＧＧｕｏ－ｄｉｎｇ（Ｄｅ...     

CRYSTAL AND MOLECULAR STRUCTURE OF [Cu_2(α-C_(10)H_7-CH_2CO_2)_4(DMF)_2](DMF)_2· H_2O

<正> The title complex crystallizes in the triclinic system, space group P1, a =11. 912(4), b = 13. 626(2), c=10. 040(3)(?), a=95. 03(2) ,β= 114. 8 (3), γ = 73. 58(3)°, V = 1418.0(?)3, Z = 1, D,= 1. 37g/cm3, F(000) = 612, R = 0. 064 for 4860 independent reflections [I>3σ(I)]. Each Cu atom is coordinated by the oxygen atoms from the C10H7CH2COO groups and DMF in a square pyramid geometry.     

CRYSTAL STRUCTURE OF K_7H_6[Nd(GeMo_(11)O_(39))_2]·27H_2O

<正> K7H6[Nd(GeMo11O39)2]·27H2O, Mr = 4413.8, crystallizes in monoclinic, space group P21/n with a = 17. 095(4), b = 26. 895(3), c = 21. 214(5) (?); β=103. 11(2)°;V = 9499. 4(3)(?)3; F(000) = 8808; Z = 4; Dc = 3. 05g/cm3; μ(MoKα) = 43. 7cm-1 and λ=0. 71069(?). A total of 8644 reflections with I≥3σ(I) were used in the structure analysis. The final R value is 0. 090, Rw value is 0. 091. The atom Nd is situated between two tetradentate heteropoly (GeMo11O39)8- ligands to form the anion [Nd(GeMo11O39)2]13-. Nd is surrounded by eight oxygen atoms at average distances of 2. 446 (?), forming a square antiprism.     

Synthesis and Structure of K_6H_7〔Dy(SiMo_6W_5O_(39))_2〕·10H_2O

1mTh0DUCTIONHeteropolycomp1exespossessalotofdistinctivecharacteristicsasmolecularm0delofcatalystdesign"'.Considerableattentionhasbeengiventothecrystalstruc-turesofheteropolycomplexescontainingdifferentcomponents,andmanyofthecrystalstructuresofthesec0mplexeshavebeendetermined.Wereportedprevious1ythecrystalstructureoftheheteropolyc0mplexeswithlanthanide,inwhichtw0kindsofelementsarecontainedinthemonolacunaryheteropolyligand".",theorientationsoftheminthecrystalareordered.Inthispaper,thecrystals…     

Synthesis and Structure of a New Dinuclear Molybdenum(I) Compound with Cyclohexanthiolate Ligand, [Mo_2(SC_6H_(11))_2(CO)_6(CH_3CN)_2]

1 INTRODUCTION The chemistry of complexes containing low-valence molybdenum and tungsten metal atoms hasincreasingly attracted the attention from chemistsand bioinorganic chemists due to their significancefor studying metal enzymes[1～5]. Since the s…     

Synthesis and Crystal Structure of Na_(10)[LaSiW_(11)O_(39)(H_2O)_4]_2·22H_2O

1 INTRODUCTION The pseudoliquid character of heteropoly compounds as catalysts is determined by their crystallographic properties. Study on the crystal structures of the heteropoly compounds could provide interesting information to enrich heteropoly acid and catalytic chemistry[1]. In the past, Zhuo Ying-Li抯 group has synthesized the carbamidine salts of 1:1 LnL(Ln=lanthanide, L=[SiW11O39]n－)[2], and Pope抯 group has reported that -SiW11O39 units are connected by lanthanide catio…     

Synthesis, Spectroscopic Properties and Crystal Structure of (C_4N_2H_(12))_2Zr(C_2O_4)_4·H_2O

1 INTRODUCTION The researches on transition metal coordination complexes have been rapidly expanded because of their fascinating structural diversity and potential applications[1～4]. As we know, zirconium oxalates can be used as precursors in the synth…     

Crystal Structure of [CH_3CH(OH)COO]_2Fe(H_2O)_2·H_2O

<正> The title compound C6H16O9Fe, Mr = 288. 13, was synthesized and crystallized in monoclinic space group P21/c, a = 9. 409(4), b = 5. 812(4), c= 22. 122(7)(?) , β=90. 80(3)°. V = 1209. 6(?)3, Z = 4, Dc=1. 572g/cm3, F(000) = 592, μ = 12. 73cm-1, R = 0. 063, Rw= 0. 068 for 1191 observed reflections. The iron atom is surrounded by O(1 - 6) in a distorted octahedron.     

Cleavage of the Fe-Fe Bond of(Me_2SiSiMe_2)[η~5-C_5H_4Fe(CO)_2]_2 with Na/Hg and Molecular Structure of the Ring-Opened Complex

The reaction of the title cyclic complex(1) with sodium amal-gam in THF resulted in the expected cleavage of the Fe--Febond to afford bis-sodium salt (Me_2SiSiMe_2) [η~5-C_5H_4Fe(CO)_2Na]_2 (4). The latter was not isolated and was used di-rectly to react with MeI, PhCH_2Cl, CH_3C(O)Cl, PhC(O)Cl,Cy_3SnCl (Cy=cyclohexyl) or Ph_3SnCl to afford correspondingring-opened derivatives (Me_2SiSiMe_2) [η~5-C_5H_4Fe(CO)_2R]_2[5, R=Me; 6, R=PhCH_2; 7, R=CH_3C(O); 8, R=PhC     

SYNTHESIS of(η~5-C_9H_7)Ln(η~8-C_8H_8)·2THF AND CRYSTAL STRUCTURE OF(η~5-C_9H_7)Pr(η~8-C_8H_8)·2THF

The reaction of LnCl_3 with K _9H_7(C_9H_7=indenyl)andK_2C_8H_8(C_8H_8=cyclooctatetraene)in tetrahydrofuran(THF)give thecorresponding complexes(η~5-C_9H_7)Ln(η~8-C_8H_8)·2THF.The synthesis of(η~5-C_9H_7)Ln(η~8-C_8H_8)·2THF(Ln=Pr,Nd)and crystal structure of(η~5-C_9H_7)Pr(η~8-C_8H_8)·2THF are described.