首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 171 毫秒
1.
2.
The compound (SiCl3)2Fe(CO)4 was synthesized and structurally characterized by X-ray single-crystal diffraction. It crystallizes in monoclinic, space group P2 1/n with α = 8.287(2), b = 9.829(2), c = 9.042(2) A, β = 96.19(3)°, V= 732.2(3) A^3, C4Cl6FeO4Si2, Mr = 436.77, Z = 2, Dc = 1.981 g/cm^3, F(000) = 424, μ(MoKα) = 2.282 mm^-1, the final R = 0.048 and wR = 0.164 for 1109 observed reflections (I 〉 2σ(I)). The crystal structure of (SiCl3)2Fe(CO)4 reveals that the Si(l)- Fe-Si(l)^a sequence is linear and perpendicular to the Fe(CO)4 cross-shaped plane.  相似文献   

3.
An iron(Ⅱ) formate [H 3 CO 3 ][Fe(HCO 2) 3 ] (1) has been synthesized under hydro-thermal conditions and characterized by single-crystal X-ray diffraction analysis.Complex 1 crystallizes in the orthorhombic system,space group Pnna with a=8.4130(4),b=11.8306(6),c=8.9468(4),α=106.527(4),β=105.876(4),γ=103.173(4) o,M r=253.94,V=890.48(7)3,Z=4,D c=1.894 g/cm 3,μ=1.721 mm-1,F(000)=512,R int=0.0164,the final R=0.0323 and wR=0.0998 for 979 observed reflections (I > 2σ(I)).1 exhibits a 3D open microporous framework formed by formate anions bridging Fe(Ⅱ) ions.  相似文献   

4.
王晓玲  孙杰 《结构化学》1998,17(2):97-100
  相似文献   

5.
6.
Synthesis and Crystal Structure of [La(BTC)(H2O)6]n   总被引:1,自引:0,他引:1  
1 INTRODUCTION desired topologies owing to their rich coordination modes[8~12] and we have been exploring the chemi- The assembly of metal-organic infinite frame- stry of coordination polymers constructed by tran- works via coordination of metal ions with multifunc- sition metals and benzoic multicarboxylic acids[13~16]. tional organic ligands is a field of increasing inte- In addition, lanthanide ions have high affinity for rest[1~4]. A rational designed and predictable coor- hard donor a…  相似文献   

7.
1 INTRODUCTION Salicylaldehyde salicyloylhydrazone (SHSH) and their deviatives show moderate fungicidal and anti- bacterial activities[1]. Rao has reported some novel lanthanoid complexes of salicylaldehydrazone. Va- rious polyhedral geometries such as distorted octa- hedron, pentagonal bipyramid and distorted square antiprism were tentatively proposed for the com- plexes used as excellent semi-conducting materials[2]. Tang has studied spectrofluorimetric determination of hydrogen perox…  相似文献   

8.
The crystal structure of the compound [EDA][Ni(dmit)2]3 (EDA=2-diethylamino-1,3-dithioanylium; dmit=1,3-dithiole-2-thione-4,5-dithiolate)C25H14NNi3S32, has been determined by single crystal X-ray diffraction at 300K. The crystal is triclinic with space group P, a=11.252, b=12.192(2), c=20.055(6) , α=108.127(2), β=106.287(8), γ=90.005(9)°; V=2498.3(3) 3, Z=2, Mr=1530.38, Dc=2.03(2) g/cm3. Final R and Rw values were 0.0603 and 0.0704, respectively. The structure consists of thick layers of stacked Ni(dmit)2 entities separated by EDA cations. This salt shows semiconducting behaviour with room temperature conductivity of 0.2 Scm-1 and activation energy of 0.11 eV.  相似文献   

9.
A novel coordination polymer [Nd2(PDB)2(CH3COO)2(H2O)3] (H2PDB = pyridine3,4-dicarboxylic acid) has been synthesized by the reaction of Nd(CH3COO)3 with pyridine3,4-dicarboxylic acid under hydrothermal conditions. Elemental analysis, IR spectra and X-ray crystal structure analysis were carried out to determine the composition and crystal structure of the title complex which belongs to the triclinic system, space group P^-1 with a = 6.9409(14), b = 7.5497(15), c = 22.530(5)A, α = 84.79(3), β = 88.15(3), γ= 75.55(3)^o, C18H18N2O15Nd2, Mr = 790.82, Z = 2, V = 1138.5(4) A^3, Dc = 2.307 g/cm^3,μ = 4.593 mm^-1, -6≤h≤8, -5≤k ≤8, -26≤l≤ 26, F(000) = 760, Rint = 0.0298, R= 0.0314 and wR= 0.0695 (I〉 2σ(I)). Nd(1) and Nd(2) are linked into zigzag chains by carboxylate groups of acetate with interesting μ3-η^2:η^2 fashion. The zigzag chains are bridged by PDB to form a 2D framework, and a 3D supramolecular network is further constructed via π-π stacking.  相似文献   

10.
林振光  黄小荥 《结构化学》1996,15(4):333-336
SolidSynthesisandCrystalStructureofCompound[(PPh_3)_3,Cu_2MoOS_3]LinZhen-Guang(DepartmentofChemistry,FujianNormalUniversity,Fuz...  相似文献   

11.
Two new iron-sulfur carbonyl complexes, [Fe2(SC6H4Cl)2(CO)6]·0.5(Et2O) 1 and [Fe3(SC6H4NH2)6(CO)6]·2(MeOH) 2, have been prepared and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. Crystal data for 1: monoclinic, C2/c, a = 18.4439(8), b = 11.0999(5), c = 25.1830(10)(A), β = 97.0370(10)o, V = 5116.8(4)(A)3, Z = 8, C20H13Cl2Fe2O6.50S2, Mr = 604.02, Dc = 1.568 g/cm3, μ = 1.540 mm-1, F(000) = 2424, the final R = 0.0545 and wR = 0.1454 for 3443 observed reflections with I > 2σ(I); 2: monoclinic, P21/n, a = 12.350, b = 26.3050(11), c = 16.057(A),β = 97.891(3)°, V = 5166.9(2)(A)3, Z = 4, C44H44Fe3N6O8S6, Mr = 1144.76, Dc = 1.472 g/cm3, μ = 1.128 mm-1, F(000) = 2352, the final R = 0.0442 and wR = 0.1197 for 7978 observed reflections with I > 2σ(I). Complex 1 contains one iron dimer, in which two tricarbonyliron(I) fragments are bridged together by two 4-chlorophenylthiolate ligands, whereas complex 2 contains a linear tri-iron cluster, in which two terminal tricarbonyliron(II) fragments and the central Fe(II) atom are linked together by six 4-aminophenylthiolate bridging ligands.  相似文献   

12.
The title compound (C16H14BrNO) has been synthesized by the reaction of p-tolylamine, Meldrum’s acid and 4-bromo-benzaldehyde, and its structure was characterized by IR, 1H NMR and X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P21/n with a = 7.6850(11), b = 8.3004(11), c = 21.301(3) , β = 95.110(2)°, V = 1353.4(3) 3, Mr = 316.19, Z = 4, Dc = 1.552 g/cm3, μ(MoKα) = 3.028 mm-1, F(000) = 640, the final R = 0.0345 and wR = 0.0768. X-ray analysis reveals that the atoms of C(1), C(2), C(3), C(4), C(5) and N(1) form a six-membered ring of boat conformation.  相似文献   

13.
The title compound C18H16N4O2S has been synthesized by the reaction of 4-amino-3-(4-ethoxyphenyl)-5-mercapto-1,2,4-triazole with phenoxyacetic acid in phospho- rus oxychloride, and characterized by IR, NMR spectra and elemental analysis. Its structure was determined by single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with a = 1.4903(3), b = 1.5230(2), c = 0.9615(16) nm, Z = 4, V = 1.7769(5) nm3, Dc = 1.317 g/cm3, μ = 0.201 mm-1, F(000) = 736, R = 0.0795 and wR = 0.2233. In the title compound, all rings are essentially planar.  相似文献   

14.
The title compound 2-amino-4-chloro-5-(4-methylbenzyl)-6-methylpyrimidine (C26H28Cl2N6, Mr = 495.44) has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction analysis. The crystal belongs to monoclinic, space group P21/c with a = 14.892(7), b = 6.129(3), c = 14.889(7) , β = 109.795(8)°, V = 1278.7(10) 3, Z = 2, F(000) = 520, Dc = 1.287 g/cm3, μ = 0.280 mm-1, the final R = 0.0577 and wR = 0.1589 for 1357 observed reflections with I > 2σ(I). A total of 6091 reflections were collected, of which 2257 were independent (Rint = 0.033). The X-ray analysis reveals that the chlorine atom and methyl of the title compound are disordered.  相似文献   

15.
The title compound [Mn(DPMT)2Cl2(H2O)2] (DPMT = 1 -[[2-(2,4-dichlorophenyl)-1,3-dioxolan-2-yl]methyl]-1H-1,2,4-triazole) was synthesized by the reaction of MnCl2-4H2O and DPMT in ethanol solution and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P2/c with a=23.913(4), b=7.8883(13), c=8.6291(14) (A),β=95.816(3)°,V=1619.4(5)(A)3,Z=2,C24H26Cl6MnN6O6 Mr=762.15, Dc=1.563 g/cm3, μ=0.950 mm'1, S=1.045, F(000)=774, R=0.0462 and wR=0.0981. The molecular structure is a centrosymmetric conformation, and two ligands are symmetrically located on both sides of the Mn atom. The manganese atom is surrounded by two nitrogen atoms from ligands, two chlorine atoms and two oxygen atoms from water molecules to form a slightly distorted octahedral geometry.  相似文献   

16.
The title compound, 1-(N,N-di-(p-toluenesulfonyl))-amino-2-(N'-p-toluenesulfonyl)-amino-3,5-dinitrobenzene, was synthesized and structurally determined by single-crystal X-ray diffraction method. It crystallizes in orthorhombic, space group Pna21 with a = 13.723(2), b =25.354(4), c = 8.6565(12)(A), V= 3011.9(8)(A)3, Z= 4, Mr = 660.68, F(000) = 1368, Dc = 1.457 g/cm3,μ = 0.309, the final R = 0.0609 and wR = 0.1042. The H atom of N2-H group, which is the unique recognition site to anion, is enveloped by two oxygen atoms and one benzene from two and one p-toluenesulfonyl moieties, respectively.  相似文献   

17.
The title compound S-( )-N'-tertbutylaminocarbonyl-N-[3-methyl-2-(4-chlorophenyl)butyryl] thiourea has been synthesized and its crystal structure was determined by singlecrystal X-ray diffraction an alysis. There exist intramolecular N(2)-H(2A)… O(1), C(17)-H(17A)…O(2) and N(3)-H(3A)…S(1) hydrogen bonds as well as intermolecular N-H…O interaction between the carbonyl and amidogen groups. Crystallographic data: C17H24ClN3O2S, Mr = 369.90,monoclinic, space group C2/c with a = 22.9922(19), b = 14.4844(12), c = 12.4618(11) (A),β =92.608(2)°, V= 4145.8(6) (A)3, Z = 8, Dc = 1.185 g/cm3, F(000) = 1568,μ(MoKa) = 0.298 mm-1, R =0.0578 and wR = 0.1308.  相似文献   

18.
李明  翟丽娜  文丽荣  王啸  杜锋 《结构化学》2007,26(1):98-102
1 INTRODUCTION The fused heterocycles bearing 1,2,4-triazine have attracted considerable attention in recent years owing to their biological and pharmaceutical activi- ties[1~3]. The 1,2,4-triazine core is a versatile synthe- tic platform to access a wide range of condensed heterocyclic ring systems via inter- and intramolecu- lar Diels-Alder reaction with a vast array of dieno- philes[4~6]. IBD (iodobenzene diacetate) is commer- cially available and used as benign non-metallic oxidant…  相似文献   

19.
A cluster compound, Mo3S4(DTP)3(IN)(Py)·EtOH I (DTP = diethyl dithiophospha- te, IN = isonicotinate) has been rationally synthesized and characterized by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 13.6345(2), b = 13.7805(2), c = 14.5400(1) , α = 107.078(1), β = 113.380(1), γ = 96.310(1)o, C25H45Mo3- N2O9P3S10, Mr = 1218.96, V = 2315.75(5) 3, Z = 2, Dc = 1.748 g/cm3, μ = 1.399, F(000) = 1224, R = 0.0425 and wR = 0.1144 for 6335 observed reflections (I > 2σ(I)). 31P NMR spectrum has been measured with the resonance 110.050 and 108.783 (2:1).  相似文献   

20.
The title compound 7-acetamido-5-chloro-8-(p-methyloxybenzenesulfonyloxy)-2- styrylquinoline 4 (C26H21ClN2O5S, Mr = 508.96) has been synthesized and characterized by 1H- NMR, IR, ESI-MS and single-crystal X-ray diffraction techniques. The crystal belongs to orthorhombic, space group Pca21, with a = 7.920(3), b = 10.672(5), c = 28.008(12) , V = 2367.3(17) 3, Z = 4, Dc = 1.425 g/cm3, μ = 0.290 mm-1, F(000) = 1056, R = 0.0323 and wR = 0.0692 for 3895 unique reflections with 3127 observed ones (I > 2σ(I)). X-ray analysis reveals that the styrylquinoline subunit adopts a coplanar conformation, where the benzene ring and quinoline are in trans configuration.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号