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1.
CrystalStructuresofN,N'-Bis(4-chlorophenyl)-1,10-diaza-18-crown-6andItsComplexwithBa(SCN)_2¥ZhangLi-Juan;LiuXiao-Lan;MaShi-Ku?..  相似文献   

2.
通过使用浓硫酸对2,2′-二羟基-1,1′-二萘的磺化与成环反应得到一种新配体,7-氧杂-二苯芴-3,11-二磺酸。通过水热方法得到了它的两个化合物,[CdL(bipy)2(H2O)][Cd(bipy)2(H2O)2]·L·H2O (1)和[CdL(phen)2(H2O)]·5H2O (2),并通过X-射线单晶衍射分析进行结构表征。化合物1P1空间群结晶,晶胞参数为a=1.205 5(6),b=1.576 4(8),c=1.954 5(10) nm,α=75.755(9),β=88.093(10),γ=89.035(10)°。化合物2P21/ c空间群结晶,晶胞参数为a=2.104 0(7),b=1.358 0(4),c=1.428 9(5) nm,β=94.543(6)°。在化合物1中,有两个独立的镉(Ⅱ)离子不对称单元,在其中镉(1)离子和两个联吡啶上的四个氮原子,磺酸配体上的一个氧原子及一个水分子配位;镉(2)离子和两个联吡啶上的四个氮原子和两个水分子配位。两种固体化合物在室温下均显示强的蓝色荧光。  相似文献   

3.
Reactions of two new tripodal ligands 1,3,5-tris(1-imidazolyl)benzene (4) and 1,3-bis(1-imidazolyl)-5-(imidazol-1-ylmethyl)benzene (5) with metal [Ag(I), Cu(II), Zn(II), Ni(II)] salts lead to the formation of novel two-dimensional (2D) metal-organic frameworks [Ag(2)(4)(2)][p-C(6)H(4)(COO)(2)].H(2)O (6), [Ag(4)]ClO(4) (7), [Cu(4)(2)(H(2)O)(2)](CH(3)COO)(2).2H(2)O (8), [Zn(4)(2)(H(2)O)(2)](NO(3))(2) (9), [Ni(4)(2)(N(3))(2)].2H(2)O (10), and [Ag(5)]ClO(4) (11). All the structures were established by single-crystal X-ray diffraction analysis. Crystal data for 6: monoclinic, C2/c, a = 23.766(3) A, b = 12.0475(10) A, c = 13.5160(13) A, beta = 117.827(3) degrees, Z = 4. For compound 7: orthorhombic, P2(1)2(1)2(1), a = 7.2495(4) A, b = 12.0763(7) A, c = 19.2196(13) A, Z = 4. For compound 8: monoclinic, P2(1)/n, a = 8.2969(5) A, b = 12.2834(5) A, c = 17.4667(12) A, beta = 96.5740(10) degrees, Z = 2. For compound 9: monoclinic, P2(1)/n, a =10.5699(3) A, b = 11.5037(3) A, c = 13.5194(4) A, beta = 110.2779(10) degrees, Z = 2. For compound 10: monoclinic, P2(1)/n, a = 9.8033(3) A, b = 12.1369(5) A, c = 13.5215(5) A, beta = 107.3280(10) degrees, Z = 2. For compound 11: monoclinic C2/c, a = 18.947(2) A, b = 9.7593(10) A, c = 19.761(2) A, beta = 97.967(2) degrees, Z = 8. Both complexes 6 and 7 are noninterpenetrating frameworks based on the (6, 3) nets, and 8, 9 and 10 are based on the (4, 4) nets while complex 11 has a twofold parallel interpenetrated network with 4.8(2) topology. It is interesting that, in complexes 6,7, and 11 with three-coordinated planar silver(I) atoms, each ligand 4 or 5 connects three metal atoms, while in the case of complexes 8, 9, and 10 with six-coordinated octahedral metal atoms, each ligand 4 only links two metal atoms, and another imidazole nitrogen atom of 4 did not participate in the coordination with the metal atoms in these complexes. The results show that the nature of organic ligand and geometric needs of metal atoms have great influence on the structure of metal-organic frameworks.  相似文献   

4.
<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   

5.
Kong  Deyuan  Meng  Linhua  Song  Lin  Xie  Yuyuan 《Transition Metal Chemistry》1999,24(5):553-557
A new macrocyclic ligand, 1,4,7,10-tetrakisbenzyl-1,4,7,10-tetraazacyclododecane (L) and its three new divalent metal complexes of general formula: M(NO3)2(L)nH2O [M = Co(1), Ni(2), n = 0; M = Cu(3), n = 1.5] have been synthesized and characterized by elemental analysis, i.r., EI mass spectra and molecular conductance. Complex (2) has been characterized by X-ray diffraction. In complex (2), the central NiII atom coordinatively bonds to four nitrogen atoms of the macrocyclic ligand and two oxygen atoms of nitrate anion, to form a distorted octahedron. X-ray diffraction indicated that the bonds Ni–N(1), Ni–N(2), Ni–N(3) and Ni–N(4) are of almost equal length, i.e. 2.11(1), 2.12(1), 2.10(1) and 2.17(1)Å, respectively. Bond lengths of Ni–O(1) and Ni– O(2) are 2.11(1) and 2.10(1)Å. Preliminary pharmacological tests show that these complexes have high antitumor activity towards HL-60 tumor cell lines.  相似文献   

6.
A new two-dimensional Cd(Ⅱ) coordination polymer, [Cd(2,5-pdch)(H2O)]n·2n(ClO4)·nH2O (2,5-pdch = pyridine-2,5-dicarbohydrazide), was prepared and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction analysis. The crystal belongs to monoclinic, space group P21/c with a = 10.905(2), b = 11.602(1), c = 15.034(2) A, β = 117.794 (10°, V = 1682.8(4A3, Z = 4, C7H13CdCl2NsO12, Mr = 542.52, Dc = 2.141 g/cm^3,/μ = 1.691 mm^-1, F(000) = 1072, 2(MoKa) = 0.71073A, the final R = 0.0608 and wR = 0.1329 for 2972 observed reflections with I 〉 2σ(I). Single-crystal X-ray diffraction analysis reveals that the Cd(Ⅱ) atom displays a distorted pentagonal-bipyramidal geometry coordinated by three N atoms and three O atoms from three different 2,5-pdch ligands, and one water molecule. Interestingly, each two Cd(Ⅱ) atoms are bridged by two carbohydrazide groups of the 2,5-pdch ligands to form a dimeric unit, and such dimeric units are further connected by the 2,5-pdch ligand to generate a two-dimensional (4,4)-network.  相似文献   

7.
0IntroductionInthepastfewyears,themolecular-basedmag-neticpropertiesofheteronuclearcomplexessimultane-ouslycomprisinglanthanideandtransitionmetalionshaveattractedincreasinginterest犤1~6犦.Inourlaborato-ry,wehavesynthesizedsuchtypeofcomplexeswithdifferentcarboxylicbridgingligands犤7~10犦.Asanex-tensionofthisresearcharea,ourpresentworkaimstosynthesizenovelcomplexesofrareearthandtransi-tionmetalbyusingoroticacidasabridgingligand.Inthecourseofourinvestigationtwonewcomp-lexesof犤Cu(C5H2N2O4)(H…  相似文献   

8.
Crystal structure of copper (II) complex with a new aminocarboxylate ligand, 3-hydroxyl-1, 5-diazacycloheptane-N,N-diacetate, C9H14CuN2O5.H2O, Mr=311.78 is reported. It crystallizes in orthorhombic Pna21 with a=13.340(4), b=8.127(1), c=10.583(4) , V=1147.2(7)3 , Z=4, Dc=1.805g/cm3, μ=19.287cm-1 (MoKα), F(000)=644. The final R and Rw are 0.049 and 0.065 for 888 observed reflections with I≥3σ(I). The result of X-ray structure determination shows that the Cu(Ⅱ) forms a planar complex with two oxygen atoms and two nitrogen atoms of the ligand.  相似文献   

9.
Preparation and Crystal Structures of LaCl_3(12-crown-4)(MeOH)and[LaCl_3(phen)_2(H_2O)]·MeOHMaoJiang-Gao(FujianInstituteofResea...  相似文献   

10.
1INTRODUCTIONAlotofstudieshaverevealedthatmesocyclicdiaminesandtheirderivativesareversa tilechelatingagentsandtheyshowedunusu...  相似文献   

11.
New polynuclear complexes, (L1)3M2 [M2 = Cr(III) (4a,4b), Fe(III) (5), Co(III) (8)], (L1)2M2(L2)2 [M2 = Co(II) (7), Ni(II) (9)], (L1)2M2(O)L2 [M2 = V(IV) (6)] and L1M2Cp2 [M2 = Ti(III) (10)] with L1 = (CO)5M1=C[C=NC(CH3)=CHS](O-)(M1 = Cr or W) and L2 = 4-methylthiazole or THF, are described. The molecular structures of these complexes determined by X-ray diffraction show that the Fischer-type carbene complexes act as bidentate ligands towards the second metal centre, coordinating through C(carbene)-attached O-atoms and imine N-atoms of the thiazolyl groups to form five-membered chelates with the oxygen atoms in the mer configuration. Isostructural complexes have similar characteristic band patterns in their far-IR spectra. Cyclic voltammetry of selected complexes reveals the oxidation of the carbene complex ligand between 1.01 and 1.29 V. Oxidation of the central metal (M2) takes place at 0.56 and 0.86 V for 7 and 9, respectively. Three stepwise reductions of Cr(III) to Cr(0) occur for 4a and 4b in the region -0.51 to -1.58 V. These new ligand types and other variants thereof should find application in ligand design with the first metal -- and other ligands attached thereto -- in the carbene complex ligand, playing an important role.  相似文献   

12.
Two Cd(Ⅱ) complexes, Cd2L2Cl2 (1) and Cd2L2(NCS)2 (2) (HL = N-(3-methoxyl- salicylidene)-3-dimethylaminopropylamine) were synthesized and determined by EA, IR, TG and single-crystal X-ray diffraction. The crystallographic data are as follows: monoclinie, space group P21/n, a = 9.2710(9), b = 18.0069(18), c = 18.5562(19) A, β= 99.741(4)°, V= 3053.1(5), Z= 4,μ = 1.605, F(000) = 1536, R = 0.0264 and wR = 0.0699 for 1; orthorhombic, space group Pca21 a = 16.196(3), b = 11.506(2), c = 36.126(7)A, V = 6732(2), Z = 8,μ = 1.428, F(000) = 3264, R = 0.0376 and wR = 0.0877 for 2. There are two geometrically different octahedral Cd(Ⅱ) atoms, with N4O2 and O4Cl2 donor sets for 1 while N4O2 and N2O2 for 2. In the dinuclear Cd(Ⅱ) centers, the Cd(Ⅱ) atoms are held together by two deprotonted phenolate oxygen atoms from tetradentate L ligands. The thermal gravity data show two step decompositions with the residues of CdO for two complexes.  相似文献   

13.
A novel coordination polymer [Mg(L)(H2O)2]·H2O] (LH2=L-cysteic acid) has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction.The crystal crystallizes in orthorhombic system, space group P212121, with a=5.962(3), b=11.224(6), c=13.664(7)(A), V=914.3(8) (A)3, Z=4, Mr=245.50, Dc=1.783 g/cm3,μ=0.445 mm-1,flack parameter=0.32(16), F(000)=512, the final R=0.0458 and wR=0.1172 for 1578 observed reflections with I > 2σ(Ⅰ). The Mg(Ⅱ) atom shows an octahedral geometry defined by two carboxyl O atoms from two different L-cysteic acid ligands, one carboxyl O atom and one amino N atom from the adjacent ligand, and two aqua ligands. The Mg(Ⅱ) atoms are bridged by L-cysteic acid ligands, leading to a 1D infinite zigzag chain. In the structure there are extensive hydrogen bonds,through which the complex completes its 3D framework structure.  相似文献   

14.
以2-氯烟酸(ClPyCOOH)、吡啶-3-甲酸(PyCOOH)分别与三环己基氢氧化锡反应,合成了两个三环己基锡杂环羧酸酯[Cy3Sn(ClPyCOO)(H2O)](1),[Cy3Sn(PyCOO)(H2O)](2)(Cy为环己基)。经IR、1H NMR、元素分析和X射线衍射表征结构。配合物均属单斜晶系,空间群C2/c。晶体学参数:化合物1,a=2.018 97(5)nm,b=1.361 16(4)nm,c=1.957 58(5)nm,β=104.815 0(10)°,Z=8,V=5.200 9(2)nm3,Dc=1.386 g.cm-3,μ(Mo Kα)=1.108 mm-1,F(000)=2 240,R1=0.043 7,wR2=0.138 0。化合物2,a=2.005 44(14)nm,b=1.355 58(10)nm,c=1.911 38(14)nm,β=107.260(3)°,Z=8,V=4.962 2(6)nm3,Dc=1.361 g.cm-3,μ(Mo Kα)=1.052 mm-1,F(000)=2 112,R1=0.035 2,wR2=0.112 5。中心锡原子均为五配位三角双锥构型。分子间存在氢键作用,配合物1、2分别形成二维结构。利用量子化学G98W软件,在LANL2DZ基组对配合物的稳定性、前沿分子轨道组成及能量进行研究。  相似文献   

15.
The preparation and characterization of [CrnFe4-nO2(O2CMe)7(bipy)2]Cl (1, n=0; 2, n=2; 3, n=4, bipy=2,2'-bipyridine) are described. The three complexes (1, 2 and 3) are obtained by tipyridine-mediated conversion of trinuclear [CrnFe3-nO(O2CMe)6(H2O)3]+(1, n=0; 2, n=1;3, n=3), and crystallized as three of approximate isomorphs. Crystal 2 is monoclinic with space group C2/c, a=27.454(5)A, b=11.789(1)A, c=16.570(3)A, B=118.78(1), V=4700.8A, z=4, u(MoKa)=11.64cm-1, F(000)=2056, final R=0.058 and Rw=0.066 for 3479 reflections with I > 3o(I). The Fe and Cr atoms in the cation are all +3 oxide state and disordered in the lattice, which is also supported by its Mossbauer studies. The [Cr2Fe2O2]8+ core can be thought of as being derived from two edge-sharing M3O units (M=Fe or Cr), and as a butterfly-like structure. The cations' structure of all three crystals are similar to each other and have C2 symmetry. The species are characterized by IR spectra and magnetic techniques, with particular emphasis on different  相似文献   

16.
The title compound, [Mn4(O2CH)4(phen)8](ClO4)4·6H2O(1), where phen=1,10-phenanthroline, was synthes-ized and its crystal structure was determined by X-ray diffraction structure analysis. The crystal is of monoclinic, space group P2/c with a=1.928 0(16) nm, b=1.297 0(11) nm, c=2.126 4(18) nm, V=5.242 2(8) nm3, Z=2, Mr=2 347.36, Dc=1.487 g·cm-3, μ=0.659 mm-1, F(000)=2 400, Rint=0.043 7, R=0.052 3, wR=0.118 6. The Mn atoms are octahed-rally coordinated by two O atoms of two ligands and four N atoms of two 1,10-phenanthroline molecules. The carboxyl group coordinates to Mn(Ⅱ) in the bridging bidentate mode. CCDC: 675520.  相似文献   

17.
牛磺酸缩2-吡啶甲醛席夫碱,3,5-二羟基苯甲酸与醋酸铜在50%甲醇中反应合成了铜(Ⅱ)-牛磺酸缩2-吡啶甲醛席夫碱-3,5-二羟基苯甲酸三元配合物{[Cu(C8H9N2O3S)(C7H6O4).(H2O)2].2H2O(1)},其结构经IR,元素分析和X-射线单晶衍射法表征。1属三斜晶系,空间群P-1,晶胞参数a=7.066(2),b=11.891(4),c=12.859(4),α=104.034(14)°,β=96.884(13),°γ=99.053(10)°,V=1020.9(6)3,Z=2,Dc=1.633 g.cm-3,μ=1.233 mm-1,F(000)=518,R1=0.1108,wR2=0.322。1的中心铜离子与席夫碱配体的两个N原子,3,5-二羟基苯甲酸羧酸根上一个O原子以及两个水分子的O原子配位,形成一个五配位的四方锥结构。由结晶水分子,没参与配位的磺酸基氧,配位水分子间形成的氢键以及吡啶环、苯环间的π┈π相互作用,使1分子堆积成三维超分子网状结构,稳定了整个晶体结构。  相似文献   

18.
<正> Both of the title complexes were produced by oxidative decarbony-lation of NH4 CMO (CO)5I]. The complexes CMo(S2CNC4H8)4]I3 ?C7H8(1) and Mo2S2O2 (S2CNC4H8)2(2) both crystallize in triclinic, space group P1 with cell dimensions for (1) : a=13. 554(4), b=13. 620(4), c= 13. 058 (4) A , α=95. 58 (3), β=105. 38(2), γ=115. 49(2)°,V = 2035(1) A3, Z=2, Dc=1. 89 g. cm-3, final R=0. 054 and Rw = 0. 062 for 2926 observed reflections; and for (2): a = 8.730(2), b=16.592(6), c = 6. 688(2)A, α=97. 67(3), β=98. 10(2), γ=80. 26(2)% V = 939. 2(5) A3, Z = 2, Dc = 2. 05 g. cm-3, final R = 0. 038 and Rw = 0. 046 for 2248 observed reflections. The Mo(V) atom is bonded to eight S atoms in distorted dodecahedron for (1). The Mo atoms in compound (2) are bridged by two S atoms and each Mo atom is coordinated by two S atoms from S2CNC4H8 and one O atom to form distorted tetragonal pyramid.  相似文献   

19.
A Cu(Ⅱ) complex [Cu(L)1.5(OSO3)]·3H2O (1) [L=1,4-bis(imidazol-1-yl)benzene] was synthesized by reaction of ligand L with CuSO4·5H2O using solvothermal method and its structure was determined by X-ray crystal structure analysis. The structure indicates that the complex crystallizes in triclinic, space group P1 with a=0.948 8(2), b=1.078 5(2), c=1.108 4(2) nm, α=74.820(2), β=81.331(2), γ=72.638(2)°, V=1.041 5(3) nm3, Z=2, Dcalc=1.687 g·cm-3, F(000)=544, μ=1.205 cm-1, the final R=0.062 3 and wR=0.132 8. The Cu(Ⅱ) atom has distorted square-pyramidal environment with a N3O2 donor set. Each L ligand links two Cu(Ⅱ) atoms using its imidazole groups to form an infinite one-dimensional (1D) ladder-like chain, which further linked by SO42- to form a two-dimensional (2D) network structure. The 2D sheets are further connected by C-H…O hydrogen bonds to give a three-dimensional (3D) structure. CCDC: 650388.  相似文献   

20.
1 INTRODUCTIONRecently,bridgedbinuclearcomplexesoffirstrowtransitionmetalshavereceivedmuchattentiononaccountoftheirbiologicalrelevanceandcondensedphasemagneticproperties[1,2].Intheseresearches,manybridgedligandswhichplayimportantroleshavebeenusedasuseful…  相似文献   

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