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1.
SYNTHESIS AND STRUCTURE OF A NOVEL INFINITE-LAYER COPPER(Ⅱ)COMPLEX BRIDGED BY OXAMIDE AND PYRIMIDINE
《中国化学快报》1993,(8)
The complex polymer[Cu_2(oxap)(pyr)_2]_n(ClO_4)_(2n),where oxap~(2-)stands for N,N'-bis(2—aminopropyl)oxamide,have been synthesized.It crystallizes in monoclinic system,space group P2_1/C,with a=8.721(2),b=8.679(2),c=16.741(2),β=98.59(0),Z=4.Theleast-square refinement coverged at R=0.054,R_w=0.055 with 1869 unique reflections.Thewhole structure of the complcx consists of layers of two-dimensional network arrayingalong a-axis with perchlorate ions interspersed in the gap between layers.Inside the layer.trans-oxamide-bridged copper(Ⅱ)dimers connected by pyrimidine in an asymmetric fashionspread out along be plane to form an infinite two-dimensional network. 相似文献
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《中国化学快报》1992,(12)
The title complex [Cu(CH_3COO)_2(C_4H_7NO)]_2 has been synthesized and its structure hasbeen determined by X-ray diffraction method.The compound crystallizes in the triclinic spacegroup P .The cell dimensions are:a=0.7775(4),b=0.8229(3),c=0.8913(5)nm,a=101.85(4)°,β=110.36(4)°,v=90.61(3)°,z=1.The struture has been refined to a R valueof 0.089.The two copper atoms are bridged by four acetate groups.Pyrrolidinone cooridinates tocopper at the apical site through its oxygen atom. 相似文献
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Two new binuclear copper(Ⅱ) complexes, [Cu(oxpn)CuL](ClO_4)_2, have been synthesizedand characterized, where oxpn is N,N' bis(3-aminopropyl)oxamido and L is 1,10-phenan-throline (phen) or 5-nitro-1,10-phenanthroline (NO_2-phen). The crystal structure and vari-able-temperature magnetic susceptibility (4- 300 K) of the Complex (L=phen) have beendetermined. Crystal data: orthorhombic system, space group Pnma, with a = 10.433(1), b11.458(2), c = 21.999(2)A, z = 4. Every copper(Ⅱ) ion is in a square pyramidal environment.The two copper(Ⅱ) ions are linked by μ-oxamido bridge and the separation of them is 5.208A. The singlet-triplet energy gap J was found equal to -452.92cm~(-1), indicating that astrongantiferromagnetic spin-exchange interaction operates between the copper(Ⅱ) ions. 相似文献
4.
《中国化学快报》1993,(11)
A novel three dimensional network complex polymer [Cu_4(oxen)_2(N_3)_3]_n(ClO_4)_n·2nH_2O, where oxen is N,N' -bis(2-aminoethyl)oxamide dianion, has been synthesized. It crystallizes in triclinic system, space group P(?), with a=11.486(2), b=11.706(3), c=12.291(3) (?), α=77.42(2), β=67.59(2), γ=77.96(2)°, and z=2. The least-square refinements converged at R=0.047, with 3416 observed unique reflections. The complex has a pronounced three-dimensional character and can be viewed as the tetranuclear asymmetric repeating units through inversion and translation operations to extend a three-dimensional network. The structure of Cu_4 asymmetric unit consists of two square planar and two square pyramidal Cu central atoms linked by both azide ligands in end-on and end-to-end bonding modes, and oxamidate bridge in trans conformation. 相似文献
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《结构化学》1992,(5)
<正> The crystal of complex [Cu(C10H24N4)Br]ClO4(C10H24N4 = 1, 7-dimethyl-1, 4, 7, 10-tetraazacyclododecane) belongs to orthorhombic space group Pca21 with a = 27. 545(14), b = 9.335(8), c=13. 104(9)(?), V = 3369(?)3, Z = 8, Dc=1. 740g/cm3, F(000) = 1784, μ(Mo) = 3. 827mm-1. The five-coordinated Cu (II) is in a square-pyramidal environment with Cu(Ⅱ) being 0. 57(0. 01)(?). above the plane containing the four N atoms of the macrocyclic ligand. Weak hydrogen bonds between two complex cations induce the formation of the dimers of the complex cations. 相似文献
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CRYSTAL STRUCTURE OF A 2D SHEET-LIKE μ-CYANIDO-OXAMIDATO BRIDGED Fe(III)-Cu(II) HETERNUCLEAR COMPLEX
《中国化学快报》1994,(8)
CRYSTALSTRUCTUREOFA2DSHEET-LIKEμ-CYANIDO-OXAMIDATOBRIDGEDFe(III)-Cu(II)HETERNUCLEARCOMPLEX¥NeiFangWu;ZhongNingCHEN;JunQIUandW... 相似文献
10.
《结构化学》1993,(2)
<正> The structure of μ-terephthalato binuclear cobalt (Ⅱ) complex CCo2(tpha)(bpy)4](ClO4)2(tpha=μ-terephthalato, bpy=2,2' -bipyridine) has been determined by X-ray method. Crystals of title complex are monoelinic, space group P21/c, with a = 13. 086(2), b = 9. 428(2), c=20. 237(4) A. β= 108. 83(1)°, Mr = 1105.61, Z = 2, Dx = 1. 55g/cm3, μ= 8. 09cm-1 and F(000)= 1128. The structure has been solved by direct methods and refined to R=0. 053, The title cation has Ct symmetry in which the terephthalato group acts as bridging ligand between the two metal atoms. Each cobalt(Ⅱ)ion is in a distorted octahedral environment. The Co.....Co distance is 10. 35A. 相似文献
11.
Yakushev I. A. Dyuzheva M. A. Cherkashina N. V. Kornev A. B. Smirnova N. S. Vargaftik M. N. 《Journal of Structural Chemistry》2021,62(10):1511-1515
Journal of Structural Chemistry - The structure of a novel pentanuclear heterometallic complex [Pd3La2(OOCMe)12(MeCOOH)4] with an unusual ratio of metals 3Pd:2La is studied by XRD. The complex is... 相似文献
12.
《结构化学》1992,(5)
<正> The reaction of H2PtC14, Ph2PCH2PPh2(dppm) , NaSPh, and element selenium in DMF gives rise to a mononuclear complex Pt (dppm ) (SPh)2, PtS2P2C37H32, Mr = 797. 83, triclinic, space group P1, a = 10. 051(2), b = 11. 805 (3), c=15. 499(4)(?). α=109.41(3), β=90. 94(3), γ=107. 80°, V = 1636.3 (?)3. Z = 2, Dc= 1. 619gcm-3, * = 45. 749cm-1, and F(000) = 788. The final structural refinement converged with unweighted and weighted R factors of 0. 029 and 0. 044, respectively, for 4832 observed unique reflections with I>3σ(I). The complex is an asymmetric molecule with a four-coordinated Pt atom. The average of Pt -S and Pt-P bond distances are 2. 334(3) and 2. 260(3) (?), respectively. 相似文献
13.
《中国化学快报》1993,(2)
Dibenzoyl peroxide undergoes oxidative addition on metallic copperpowder with 2,2′-bipyridine(or imidazole)in a mixed solvent(methanol andtetrahydrofuran),and affords the Cu(Ⅱ)complexes-[Cu(Ce(C_6H_5COO)_2(2,2'-bipy)]H_2O(1)and[Cu(C_6H_5COO)_2(C_3H_4N_2)_2](2).The structure was solved by direct methodsand Fourier synthesis.C_(24)H_(20)N_2O_5Cu (1),Mr=479.78,space group P2(1)/c,a=6.986(7),b=18.833(I),c=17.021(3),α=γ=90°,Z=4,V=2218.1~3,Dc=1.443g/cm\+3,R=0.055Rw=0.062.Complex(2),C_(20)H_(18)N_4O_4Cu(2),Mr=441.74,space group P2(1)/n,a=8.699(4),b=9.840(6),c=12.399(5),α=γ=90°,β=100.8°,Z=4,V=1010.9~3,Dc=1.654g/cm\+3,R=0.055,Rw=0.062. 相似文献
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《结构化学》1993,(1)
<正> Ta3(Te2)6, Mr = 2074. 04, tetragonal, P4/ncc, a = 9. 204(1) A , c=20,401(8) A, V=1728. 3 A 3, Z = 4, Dc = 7. 97g/cm3, λ(MoKa) = 0. 71073 A . μ= 386, 3cm-1,F(000) = 3372, T= 296K , R= 0. 027, Rw = 0, 029 for 493 observed unique reflections. The structure is composed of infinite [TaTe4] chains along the e axis. In these chains, the Ta sequences distort in such a way that linear Ta, clusters are formed. 相似文献
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《结构化学》1987,(3)
<正> [Cu(H2O)6][CuC13H12NO7]2.2H2O,Mr=904.5, Monoclinic, P21/n,a= 8.287(2), b=20.462(3), c=10.921(2)A,β=108.90(2), Z=2, V=1752.2A3, Dc=1.750 g/cm3, μ=13.166cm-1, R=0.042 for 2524 observed reflections. The title complex contains a [CuC13H12NO7]22- dimeric anion which consists of two mono-anions related by centrosymmetry and connecting each other by coordination bond Cu-O.The dimeric complex anion is compatible with an aquo-Cu(Ⅱ) cation that is located in centrosymmetric position. Here all Cu(Ⅱ) ions are six-coordinated with distorted octahedral configuration. 相似文献
18.
《结构化学》1990,(2)
<正> The crystal of the title complex, Ag2Cl2P2O8N6C56H54 ,Mr= 1287. 6, belongs to triclinic system. Space group P1 with dimensions; a=10. 535(1), b= 10. 722 (3),c=12.948(2)A;α=81.25(2)°,β=81.20(1)°, γ=86.45(2)°, V=1427. 4 A3, Z= 1 ,DC= 1. 49g/cm3,F(000) = 656. 0, Mo Ka ratiation, λ=0.7107A μ = 2. 6cm-1 , The final R for 4672 reflections is 0. 043. There is a center of inversion in the molecule. 相似文献
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《结构化学》1991,(1)
<正> C_19H_18N_2S_2Fe, Mt = 394. 33, monoclinic, P2_1/c,a = 7. 726 ( 7) , b = 11. 098(1 ),c= 21. 300(6) A ,β=100. 40(7)°,V= 1796. 2 A3,Z = 4,DC = 1. 458g·cm-3;MoKa,(λ=0. 71073A),μ=10. 635cm-1,F(000) = 816,room temperature,final R=0. 098,Rw=0. 121 for 3250 unique reflections,2306 reflections with I>3σ(I). The title compound is a new Schiff base which is made by condensation of formoylferrocene, FC-CHO and S-benzyldithiocarbazate. The mean Fe-C distance is 2. 04 A. The mean C-C distances in the cyclopentadienyl rings with and without side chain are 1. 43 and 1. 38 A,respectively. Electron migration from cyclopentadienyl ring to side chain is evident. A substantial Kekule-type distortion of the phenyl ring on the side chain is indicated. 相似文献
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《结构化学》1993,(4)
<正> C80H76Cl6Cu2P6,Mr=1563.13,monoclinic,P21/n,a=12.608(9),b=21.729(7),c=14.473(8)A.,β=105.34(5)°,V=3823.6A3,Z=2,Dc=1.28 g.cm-3,F(000)=1528,μ=8.6 cm-1,The final R and Rw are 0.076 and 0.083 respectively for 4418 observed reflections with I≥3σ(I).There is a center of inversion in the molecule. 相似文献