共查询到20条相似文献,搜索用时 78 毫秒
1.
Manwarul Islam Caroline A. Johns Shariff E. Kabir Kalipada Kundu K.M. Abdul Malik S.M. Bashir Ullah 《Journal of chemical crystallography》1999,29(9):1001-1007
The dimeric complex [Mn2(-pyS)2(CO)6] (1) reacted with 2 M equivalents of both PPh3 and PHPh2 to give the respective monomeric phosphine complexes [Mn(pyS)(L)(CO)3][L = PPh3 (2) and PHPh2 (3)]; with 4 M equivalents of dppm, it yielded the complex [Mn(pyS)(1-dppm)2(CO)2](4). An X-ray structure determination of 4 shows that it crystallizes in the monoclinic space group P21/n with a = 11.027(3), b = 24.984(7), c = 18.379(5) Å, = 99.870(8)°, V = 4988(2) Å3, and Z = 4. The complex has an octahedral geometry with the chelating pyS ligand and two CO groups occupying the equatorial sites and the two monodentate dppm ligands lying in the trans positions. 相似文献
2.
Said Aboulkacem Wieland Tyrra Ingo Pantenburg 《Journal of chemical crystallography》2006,36(2):141-145
Bis(triphenylphosphoranyliden)ammonium bis(pentafluoroethyl)argentate, [Ph3P=N= PPh3][Ag(C2F5)2] (1) and bis[bis(triphenylphosphoranyliden)ammonium]tetrachloro-diargentate, [Ph3P=N=PPh3]2[ClAg(μ-Cl)2AgCl] (2) were crystallized from the reaction mixture of pentafluoroethylsilver(I) and bis(triphenylphosphoranyliden)ammonium chlo-ride. Crystallization of 1 occurs in the centrosymmetric monoclinic space group P21/c (No. 14) with a = 17.083(2) Å, b = 11.600(2) Å, c = 19.833(2) Å, β = 109.66(1)°, V = 3700.8(7) Å3, Z = 4. 2 crystallizes in the centrosymmetric orthorhombic space group Pbca (No. 61) with a = 19.540(1) Å, b = 15.926(1) Å, c = 20.160(1) Å, V = 6273.6(3) Å3, Z = 8. 相似文献
3.
Manwarul Islam Shariff E. Kabir Kalipada Kundu K.M. Abdual Malik S.M. Bashir Ullah 《Journal of chemical crystallography》2000,30(6):379-383
The dimeric complex [Mn2(-pyS)2(CO)6] (1) reacted with 2 molar equivalents of Ph2P(CH2)3PPh2 (dppp) and Ph2P(CH2)2PPh2 (dppe) to give the respective monomeric chelate complexes [Mn(2-pyS)(2-dppp)(CO)2] (2) and [Mn(2-pyS)(2-dppe)(CO)2] (3). In contrast, with 2 molar equivalents of Ph2P(CH2)5PPh2 (dpppe), 1 gave the highly insoluble polymeric complex [Mn(2-pyS)(-dpppe)(CO)2]n (4). An X-ray structure determination shows that 2 crystallizes in the monoclinic space group P21/n with a = 10.721(2) Å, b = 19.712(5) Å, c = 14.846(4) Å, = 109.06(2)°, V = 2965.5(14) Å3, and Z = 4. The complex has a distorted octahedral geometry with the dppp ligand, one CO group and the N atom of the chelating pyS ligand occupying equatorial sites, and one CO group and the S atom of the pyS ligand lying in the axial positions. 相似文献
4.
K.-Y. Choi Y.-M. Jeon K.-C. Lee H. Ryu M. Suh H.-S. Park M.-J. Kim Y.-H. Song 《Journal of chemical crystallography》2004,34(9):591-596
The carboxylate-bridged dinuclear complex [Cd(-pmpa)(H2O)](ClO4)·H2O (1) (Hpmpa = bis(2-pyridylmethyl)amino-3-propionic acid) has been synthesized and structurally characterized by X-ray diffraction method. It crystallizes in the monoclinic system P2
1/n with a = 7.9678(6) Å, b = 17.5103(9) Å, c = 14.3147(9) Å, = 94.1030(10)°, V = 1992.0(2) Å3, Z = 4. The carboxylate group of the pmpa ligand adopts a bidentate bridging coordination mode, and the ligand acts as -bridge linking two cadmium(II) ions to form a dinuclear complex. Each cadmium atom is seven-coordinate, with a distorted pentagonal bipyramidal geometry. The cyclic voltammogram of 1 undergoes irreversible one-electron oxidation to the Cd(III) and reversible one-electron reduction to the Cd(I). 相似文献
5.
Kazi A. Azam Mohitosh Bhowmick Golam Mohammad Golzar Hossain Shariff E. Kabir Kalipada Kundu Khalifa Mohammad Abdul Malik Salina Perven 《Journal of chemical crystallography》2001,31(1):63-68
Treatment of [Ru3(CO)10(-dppm)] (1) with the ditelluride Te2(C6H4OEt-4)2 in refluxing toluene afforded the new aryltellurol bridged complex [Ru2(CO)4(-TeC6H4OEt-4)2 (-dppm)] (2) together with three known complexes [Ru4(CO)8(-CO)(4-Te)2(-dppm)] (3), [Ru2(CO)6{-CH2PPh(C6H4)PPh}] (4), and [Ru2(CO)6{-C6H4PPh(CH2)PPh}] (5). All the four complexes were characterized by spectroscopic methods, including an X-ray structure determination for 5. Complex 5 crystallizes in the monoclinic space group P21/c with a = 13.650(2), b = 9.995(2), c = 18.929(3) Å, = 97.49(2)°, V = 2560.4(8) Å3, and Z = 4. In this complex the two ruthenium atoms are bridged by the phosphino-phosphide ligand C6H4PPh(CH2)PPh which is attached to one Ru by the C6H4 group and a P atom while to the other Ru by both the two P atoms. Both the ruthenium atoms show distorted octahedral geometry. The Ru—Ru bond length is 2.8719(7) Å. 相似文献
6.
Ping Lin Xintao Wu Tianlu Sheng Quanming Wang Heng Yu Ling Chen 《Journal of chemical crystallography》1998,28(9):713-716
The complex Cu(PPh3)3I reacts with [Et4N]2MoS4 and FeBr2 to give the heterotrimetallic complexes [Et4N][(Ph3P)2{CuS2MoS2Fe}Br2] (1). [Et4N][(Ph3P)2{CuS2MoS2Fe}Br2] (1) crystallizes in the triclinic space group P-1, a = 13.537(4), b = 15.316(4), c = 12.381(4) Å, = 105.16(2), = 93.27(3), = 101.18(2)°, and V = 2415.0(12) Å3 for Z = 2. The three metal atoms of the structure [Et4N][(Ph3P)2{CuS2MoS2Fe}Br2] (1) are nearly distributed along a line, where three metal atoms (Mo, Cu, Fe) are each in an approximate tetrahedral coordination, the lengths Mo-Fe and Mo-Cu distances are 2.772(2) and 2.798(2) Å, respectively. 相似文献
7.
The X-ray crystal structures ofcis-Mo(CO)4(Ph2PNH2)2,I, andtrans-Mo(CO)4(Ph2PNHMe)2,II, are presented. ComplexI crystallizes in the monoclinic space groupP21/c(a=13.433(1),b=12.2719(8),c=17.318(2)Å;=109.79(1)°;V=2686.1(8)Å3;Z=4). ComplexII crystallizes in the triclinic space groupP¯1 (a=6.9986(8),b=10.328(1),c=11.241(2)Å,=107.58(1)°,=91.76(1)°, =101.28(1)°,V=756.1(4)Å3,Z=1). The molybdenum coordination geometry in each complex is a slightly distorted octahedron. The molybdenum-carbon bond lengths for the carbonyls trans to phosphorus in complexI are shorter than those the carbonyls trans to other carbonyls. The average molybdenum-phosphorus distance inI (2.525(5)Å) is similar to those in other diphenylphosphinamide complexes and longer than the molybdenum-phosphorus distance inII in 2.4585(7)Å). The distance between two nitrogen atoms incis Mo(CO)4(Ph2PNH2)2 (3.74(3)Å) is significantly larger than the sum of their van der Waals radii (3.10 Å) indicating that the two nitrogens are not hydrogen bonded. 相似文献
8.
Ki-Young Choi Haiil Ryu Nack-Do Sung Mancheol Suh 《Journal of chemical crystallography》2003,33(12):947-950
The mono(dpa)copper(II) complex [Cu(dpa)Cl2] (1) (dpa = di-(2-picolyl)amine) has been synthesized and structurally characterized. It crystallizes in the monoclinic system P21/n with a = 8.155(1), b = 12.560(1), c = 12.817(2) Å, = 91.64(2)°, V = 1312.3(2) Å3, Z = 4. The copper atom is coordinated by three nitrogen atoms from the dpa ligand and two chlorides in a distorted square-pyramidal environment. Cyclic voltammetric data show that 1 undergoes the reversible one-electron oxidation to the Cu(III) and the reversible one-electron reduction to the Cu(I) state. 相似文献
9.
Judith L. Flippen-Anderson Peter D'Antonio John H. Konnert 《Journal of chemical crystallography》1984,14(6):565-572
The crystal structures of (E)-5-hydroxypyrrolizidin-3-one (2) and (Z)-5-thioketalpyrrolizidin-3-one (3) have been determined by single-crystal x-ray diffraction techniques and refined by full-matrix least squares. Molecule2 crystallizes in the monoclinic space groupP21/a(No. 14) witha=7.887(3) Å,b=9.788(5) Å,c=9.316(4) Å,=100.6(1), andZ=4. Molecule 3 crystallizes in the monoclinic space groupP21/c witha=12.947(14) Å,b=10.553(14) Å,c=9.629(14) Å,=101.4(1), andZ=4. The calculated density for both molecules is 1.33 g cm–1. FinalR-factors were 5.1% for2 and 8.59% for3. The x-ray results showed that a change in configuration occurred in the reaction going from2 to3. 相似文献
10.
Paul K. Baker Michael B. Hursthouse Latifah A. Latif K.M. Abdul Malik 《Journal of chemical crystallography》1998,28(8):639-643
[WI2(CO)3{P(OMe)3}2]crystallizes in the orthorhombic space group Pca21, with a = 26.924(5), b = 10.726(2), c = 14.136(3) Å, and Z = 8. There are two molecules in the asymmetric unit, the metal atoms in each case being seven-coordinate with a capped fac-(CO)3 octahedral geometry. The molecular dimensions in the two molecules are nearly identical. The W–P distance to the capping atom 2.397 Å (average) is significantly shorter than the other W–P distance, 2.525 Å (average). 相似文献
11.
Mohammad R. Hasan Michael B. Hursthouse Shariff E. Kabir K.M. Abdul Malik Edward Rosenberg Tasneem A. Siddiquee 《Journal of chemical crystallography》1999,29(5):597-602
The reaction of [Ru3(CO)10(-dppm)] 1 with PPhCl2 in refluxing CHCl3 results in the isolation of [(-H)Ru3(CO)8(-Cl)(-dppm)] 3 in 10% yield. Compound 3, which has been structurally characterized by crystallographic methods, is also formed from the reaction of 1 with H2 in refluxing CCl4. The compound crystallizes in the monoclinic space group P21/c with a = 16.814(2), b = 18.7590(12), c = 11.486(2) Å, = 97.745(11)°, V = 3589.8(8) Å3, and Z = 4. The hydride and chloride ligands bridge the same edge of the triruthenium cluster as the dppm ligand. 相似文献
12.
Simon G. Bott Jian Cheng Wang Michael G. Richmond 《Journal of chemical crystallography》1999,29(5):603-608
The cobalt cluster PhCCo3(CO)9 reacts with the bis(phosphanyl)hydrazine ligand bis(diphenylphosphino)dimethylhydrazine (dppdmh) in CH2Cl2 with added Me3NO to give the monosubstituted cluster PhCCo3(CO)8[Ph2PP(O)PPh2] as the major isolable product. The solid-state structure of this new cluster was unequivocally established by X-ray diffraction analysis, which has confirmed the presence of a noncoordinated (O)PPh2 moiety. PhCCo3(CO)8[Ph2PP(O)Ph2] crystallizes in the triclinic space group P
, a = 12.036(2), b = 12.037(2), c = 15.124(3) Å, = 84.82(1)°, = 89.44(2)°, = 60.09(1)°, V = 1890.0(6) Å3, Z = 2, and dcalc = 1.540 g/cm3. 相似文献
13.
Ki-Young Choi 《Journal of chemical crystallography》1998,28(12):875-878
The complex [Cu(L)N3](H2O)(ClO4) (1) (L = 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18, 07.12]docosane) has been prepared and characterized by X-ray crystallography. 1 crystallizes in the monoclinic space group P21/c, with a = 8.907(5), b = 20.036(3), c = 14.773(2) Å, = 103.78(2)°, V = 2560.6(15) Å3, and Z = 4. The coordination geometry around the Cu(II) ion is a distorted square-pyramidal with four nitrogen atoms of the macrocycle and one nitrogen atom of the axial azido group. 相似文献
14.
The title compound crystallizes in the orthorhombic space group Pnma, with a = 7.9209(5), b = 9.818(1), c = 16.867(2) Å, and Z = 4. The structure was solved employing 1864 independent x-ray reflections with I>2(I) by Patterson and difference Fourier techniques and refined by full-matrix least-squares to R = 0.036. The trans-[CO(NH3)4(NH2CH3)Cl](ClO4)2 molecule is on a crystallographic mirror plane. The cobalt ion is in an elongated octahedral coordination with four equatorial ammonia ligands [average Co–N distance equal to 1.966(2) Å], an axial methylamine [Co–N=1.965(3)Å], and an axial chlorine ion [Co–Cl=2.2771(9)Å]. Kinetic steric effects of the complex are interpreted in terms of structural results. 相似文献
15.
Tris(triphenylphosphine)rhodium cyano and triphenylcyanoborate complexes: Structures and a DFT study
Manuel A. Fernandes Viorel Cîrcu Rosemarie Weber Tereza Varnali Laurence Carlton 《Journal of chemical crystallography》2002,32(8):273-278
The structures of [Rh(CN)(PPh3)3](EtOH) (1), [Rh(NCBPh3)(PPh3)3] (2), and [Rh(CNBPh3)(PPh3)3] (3) are reported together with a density functional theory (DFT) study of the model compounds [Rh(NCBH3)(PH3)3] and [Rh(CNBH3)(PH3)3]. Compound 1 crystallizes in space group Pc with a = 10.4798(15) Å, b = 12.5410(18) Å, c = 19.974(3) Å and = 112.215(6)°; compound 2 crystallizes in space group
with a = 12.929(2) Å, b = 14.362(2) Å, c = 17.575(3) Å and = 92.544(3)°, = 90.214(3)°, = 113.831(3)°; compound 3 crystallizes in space group
with a = 12.915(2), b = 14.296(2), c = 17.664(3) Å and = 92.469(3)°, = 90.088(3)°, = 113.768(3)°. All three complexes show slight tetrahedral distortion from ideal square planar geometry (largest for 1). Differences in the reactivity and stability of 2 and 3 are interpreted according to the results of a density functional theory study. 相似文献
16.
Jerry P. Jasinski Heidi E. Exel Alfonso Castiñeiras Elena Bermejo Heloisa Beraldo Douglas X. West 《Journal of chemical crystallography》2003,33(1):11-18
The crystal and molecular structure of copper(II) complexes of benzil bis(3-piperidylthiosemicarbazone), [Cu(Bnzpip)] and 1-phenylpropane-1,2-dione bis(3-piperidylthiosemicarbazone), [Cu(Pmpip)] have been determined. [Cu(Bnzpip)] is monoclinic, space group P21/n with a = 13.9375(10) Å, b = 11.6621(4) Å, c = 16.4710(10) Å, = 100.667(2)°, and V = 2630.9(3) Å3 with Z = 4, for d
calc = 1.399 g/cm3. [Cu(Pmpip)] is also monoclinic, space group P21/n with a = 11.292(6) Å, b = 10.219(5) Å, c = 20.292(6) Å, = 101.50(3)°, and V = 2295(2) Å3 with Z = 4, for d
calc = 1.525 g/cm3. Both complexes involve N2S2 coordination, are relatively planar except for the phenyl rings and have similar bond distances and angles to copper(II) complexes of other 3-piperidylthiosemicarbazones. 相似文献
17.
Mehrzia Krimi Ammar Fatma Ben Amor Tahar Jouini Ahmed Driss 《Journal of chemical crystallography》2002,32(3-4):87-89
The synthesis and crystal structure of a new dinuclear complex Cu2(C2H4N4)2 (CH3N3)4 are reported. It crystallizes in the monoclinic system of space group P21/c, with a = 8,459(1) Å, b = 15,481(3) Å, c = 8,714(2) Å, = 110,60(1)°, and Z = 2. The centrosymmetric molecular structure of Cu2(C2H4N4)2(CH3N3)4 comprises a tetrakis(guanidino)-bridged dinuclear copper(II) core with axially located cnge moities. 相似文献
18.
Ki-Young Choi Yong-Man Jeon Choon Pyo Hong Haiil Ryu Il-Hwan Suh 《Journal of chemical crystallography》2001,31(4):197-201
The compound [Zn(L2)Cl]ClO4·H2O (1) (L2 = 2,13,-bis(3-hydroxypropyl)-5,16-di-methyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane) has been synthesized and structurally characterized. 1 crystallizes in the monoclinic system, space group P21/c with a = 8.932(2), b = 16.189(2), c = 22.492(4) Å = 95.34(2)° V = 3238.3(11) Å3; and Z = 4. The zinc atom is placed in a highly distorted tetrahedral environment bonding with three nitrogen atoms of the macrocycle and one chlorine atom. 相似文献
19.
The title compound [CpRu(PPh3)2(tht)]BF4,1, tht=tetrahydrothiophene, is obtained by the reaction of CpRu(PPh3)2Cl, tht and AgBF4 in CH2Cl2 solution. Yellow crystals of [CpRu(PPh3)2(tht)]BF4 were grown by the slow diffusion of pentane into a CH2Cl2 solution of1 and have been studied by X-ray crystallography: space group is P21/n,a=9.507(2),b=18.336(3),c=22.372(6) Å, =94.28(2)°,V=3889(1) Å3,Z=4. The tht ligand binds to the Ru atom through the sulfur atom at a distance of 2.395(2) Å. The tht ring is in the puckered configuration. 相似文献
20.
Jan Moncol Marcela Mudra Peter Lonnecke Marian Koman Milan Melnik 《Journal of chemical crystallography》2004,34(7):423-431
The crystal and molecular structures of [Cu(3-PM)4Cl2] (1) and [Cu(4-PM)4Cl]Cl (2) have been determinated by X-ray crystallography. Complex 1 crystallizes in the triclinic system, space group P–1, with lattice parameters a = 7.972(2) Å, b = 8.293(2) Å, c = 10.707(2) Å, = 105.73(3)°, = 90.04(3)°, = 110.38(3)°, and Z = 1 at 100 K. The coordination geometry of each Cu atom is approximately octahedral formed by four nitrogen atoms of pyridine rings of 3-pyridylmethanol molecules in the equatorial plane and two chlorine atoms occupying the axial positions. The O—HsO, C—HsCl, and O—HsCl intermolecular hydrogen bonds and s stacking link the molecules in 3-D hydrogen-bonded coordination network. Complex 2 crystallizes in the tetragonal system, space group P4/n, with lattice parameters a = 10.464(1) Å, c = 11.339(2) Å, and Z = 2 at 217 K and a = 10.352(1) Å, c = 11.201(2) Å, and Z = 2 at 293 K. The coordination geometry of Cu atom in the [Cu(4-PM)4Cl]+ ion is approximately square pyramidal formed by four nitrogen atoms of pyridine rings of 4-pyridylmethanol molecules in equatorial plane and one chlorine atom in axial position. The O—HsCl and C—HsCl intermolecular hydrogen bonds link the molecules in 2-D hydrogen-bonded coordination network. 相似文献