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1.
Xiao-Lan Yu Ye-Xiang Tong Xiao-Ming Chen Thomas C. W. Mak 《Journal of chemical crystallography》1997,27(7):441-444
A new monomeric manganese(II) complex with 2,2′-bipyridine (bpy), [Mn(bpy)3-] (ClO4)2·0.5(bpy), has been prepared and characterized by X-ray crystallography. The complex crystallizes in the triclinic space group $P\bar 1$ witha=9.535(2),b=13.194(3),c=14.854(3) Å, α=96.50(3), β=107.26(3), γ=91.19(3)°,V=1770.2(7) Å3, andZ=2. The structure comprises discrete [Mn(bpy)3]2+ cations in which the metal atom is coordinated in a highly distorted octahedral environment by three chelate bpy ligands [Mn?N=2.229(3)–2.289(2) Å]. The solvate bpy molecule and a pair of coordinated bpy ligands each from the adjacent cations are arranged in an off-set fashion, showing significant intermolecular stacking interaction with close interplanar contacts ofca. 3.47 Å. 相似文献
2.
Xiao-Ming Chen Xiao-Ying Huang Yong-Jin Xu Yong-Jia Zhu 《Journal of chemical crystallography》1995,25(9):605-607
A new monomeric manganese(II) nitrate complex with 2,2-bipyridine (bpy), [Mn(bpy)2(NO3)(H2O)](NO3)·H2O, has been prepared and characterized by X-ray crystallography. The complex crystallizes in the triclinic space group
witha=9.721(3),b=14.691(5),c=8.578(3) Å, =106.79(3), =96.05(3), =82.55(3)°,V=1159.9 Å3 andZ=2. The structure comprises discrete cation [Mn(bpy)2(NO3)(H2O)]+ in which the metal atom is coordinated by a pair of bidentate bpy ligands [Mn–N=2.261(4)–2.299(4) Å], a unidentate nitrato [Mn–O=2.284(4) Å] and aqua [Mn–O=2.160(3) Å] ligands in a highly distorted octahedral arrangement. 相似文献
3.
Yu-Luan Wu Xiao-Lan Yu Xiao-Ming Chen Xiao-Ying Huang 《Journal of chemical crystallography》1995,25(12):875-878
A new monomeric copper(II) complex with 2,2-bipyridine (bpy) and betaine (bet), [Cu(byy)(bet)2(H2O)](ClO4)2 · H2O, has been prepared and characterized by X-ray crystallography. The complex crystallizes in the triclinic space groupP-1 witha=8.859(2),b=11.191(2),c=14.850(3) Å, =91.41(1), =97.19(1), =91.97(1)°,V=1459.2(7) Å3, andZ=2. The structure comprises discrete cations [Cu(bpy)(bet)2(H2O)]2+ in which the metal atom is coordinated in a distorted square-pyramidal environment by two oxygen atoms from a pair of monodentate carboxylato ligands [Cu–O=1.950(2) Å] and two nitrogen atoms of a bidentate bpy ligand [Cu–N=1.997(3)–2.005(3) Å] on the basal plane, and one aqua [Cu–O=2.267(3) Å] ligand at the apical position. 相似文献
4.
Mustafa Tombul Kutalmis Guven Tahsin N. Durlu 《Journal of chemical crystallography》2009,39(6):445-448
Abstract A dimeric sodium supported borate complex, [Na(py)][B(hyncaH−2)2]2
(1) (py = pyridine, hynca = 1-hydroxynaphthalene-2-carboxylic acid), has been synthesised by the reaction of NaBH4 with two equivalents of hynca in anhydrous THF and following crystallization from py/H2O solution afforded borate ester derivative. The complex has been fully characterized by FT-IR in the solid state and by NMR
(1H and 13C) spectroscopy and electrospray ionization mass spectrometry in solution. The molecular structure of the title compound was
determined by single crystal X-ray diffraction. Structure analysis of complex 1 confirmed the presence of an anionic complex [B(hyncaH−2)2]− in which boron atom is coordinated simultaneously by two hynca ligands utilising both alkoxide and carboxylate groups for
bonding. The Na atom is six- coordinate to five O atoms of hydroxy carboxylic acid and one pyridine N atom. Crystal data:
crystal system, monoclinic, a = 10.971(3) Å, b = 6.839(3) Å, c = 30.545(5) Å, β = 92.20(2)°, space group P21/c (#14), V = 2,290(1) Å3, Z = 4.
Index Abstract There are limited examples of alkali metal supported borate ester complexes.
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5.
O. E. Piro E. E. Castellano J. Zukerman-Schpector C. A. De Simone D. M. Martino C. A. Steren 《Journal of chemical crystallography》1997,27(2):129-135
The title compound, [Cu(N3)(NCO)(C6H16N2)]2, crystallizes in the space groupP21/n, witha=8.336(1),b=17.405(3),c=8.376(1) Å, β=109.73(2)o andZ=4. The molecules are arranged as centrosymmetric dimers in which two azide ligands bridge neighboring copper ions in an asymmetric
head-on fashion. The Cu(II) ion is coordinated to five nitrogen atoms which form a distorted tetragonal pyramid. At the pyramid
base are the two N atoms of a diEten molecule [Cu−N=2.00(1), 2.130(9) Å], an azide end atom [Cu−N=1.99(1) Å] and a NCO group
[Cu−N=1.93(1) Å]. At the pyramid apex is the other, inversion related, azide N atom in the dimer [Cu−N=2.38(1) Å]. This Cu−N
contact links the monomers within a dimer. Neighboring dimers are coupled by weak N−H…O contacts. Single crystal EPR data
at X-band show that the pair of resonances expected for neighboring, magnetically nonequivalents dimers, collapse into a single
line, a signature of inter-dimers superexchange coupling. The observed crystal gyromagnetic tensor is used to disclose the
electronic and magnetic structure around Cu(II) ions. 相似文献
6.
Robinson S. Jebas Bhuvana K. Periyasamy Thailampillai Balasubramanian 《Journal of chemical crystallography》2006,36(8):503-507
The crystal structure of 2-aminopyridinium nicotinic acetate (C11H11N3O2) has been determined from X-ray diffraction data using MO Kα radiation. The crystals are monoclinic, P21/n, with a=8.787(9) Å, b=12.176(2) Å, c=10.866(2) Å, β=110.11(1)°, and z=4. There is an intermolecular hydrogen bonding between the amino group of the 2-aminopyridine and the oxygen atoms of the nicotinic acetate. Both the six-membered rings are planar. The cations and anions are linked together in chains along the [001] direction by N–HO hydrogen bonds. 相似文献
7.
Annamária Krajníková Róbert Gyepes Katarína Győryová 《Journal of chemical crystallography》2010,40(8):650-655
Abstract
The syntheses and structural characterizations of two novel 2-bromobenzoatozinc(II) complexes—[Zn(2-BrC6H4COO)2] n (I) and [Zn(2-BrC6H4COO)2(mnad)]2 (II), where mnad is N-methylnicotinamide are reported. Compound (I) crystallized with a monoclinic lattice (space group P21/c) and is polymeric in solid state. Its cell parameters are: a = 7.37220(10) Å, b = 19.9639(3) Å, c = 30.2756(5) Å, β = 94.7510(7)°, V = 4440.59(12) Å3, Z = 4. The coordination environments of all zinc atoms are distorted tetrahedra built from four carboxylate oxygen atoms coming from four 2-bromobenzoato ligands. Compound (II) crystallized with a monoclinic lattice (space group P21/c) with a = 11.7488(2) Å, b = 20.3683(3) Å, c = 9.30130(10) Å, β = 100.3941(11)°, V = 2189.30(5) Å3, Z = 2. This dimeric molecule features a paddle-wheel [Zn2O8] cage in solid state; the coordination environment of the central atom is square pyramidal consisting of four carboxylate oxygen atoms and the pyridine N atom of the mnad ligand. 相似文献8.
Daniel L. Reger Mark D. Smith Kenneth J. Brown 《Journal of chemical crystallography》2009,39(8):545-548
Abstract The cation in the solid state structure of [Fe{HC(3,5-Me2pz)3}2][Fe2OCl6] (pz = pyrazolyl ring) contains an octahedral iron(II) center with an average Fe–N bond distance of 2.17 Å, indicating that
the iron(II) is in the high-spin form. While M–N bond distances of this length with κ3-[HC(3,5-Me2pz)3] ligands generally cause tilting of pz to open up the “bite” angle, in this structure the average tilting angle is only 3.1°,
a much lower value than observed in earlier structures of this same cation paired with different anions. The crystals are
monoclinic, space group P21/n, with a = 11.1671(12) Å, b = 10.8091(11) Å, c = 17.4385(17) Å, α = γ = 90°, β = 95.685(2)°, and Z = 2.
Graphical Abstract The cation in the solid state structure of [Fe{HC(3,5-Me2pz)3}2][Fe2OCl6] (pz = pyrazolyl ring) contains an octahedral iron(II) center in the high-spin form with unusual orientations of the pyrazolyl
rings.
相似文献
9.
Janusz Lipkowski Marina S. Fonari Victor Ch. Kravtsov Yurii A. Simonov Edward V. Ganin Vladimir O. Gelmboldt 《Journal of chemical crystallography》1996,26(12):823-833
Four crystalline molecular complexes between antimony(III) fluoride and 18-membered crown ethers have been obtained and their structures investigated by single crystal X-ray diffraction techniques: [18-crown-6·SbF3], C12H24F3O6Sb,P212121,a=8.328(4),b=11.573(4),c=18.094(4),V=1744(1)3,Z=4; [benzo-18-crown-6·SbF3], C16H24F3O6Sb,P21/n,a=10.490(2),b=13.714(1),c=13.442(2), =101.94(1)°,V=1892(1)3,Z=4; [cis-syn-cis-dicyclohexano-18-crown-6·SbF3·CH3OH], C21H40F3O7Sb,P21/n,a=8.270(4),b=23.386(3),c=12.772(1), =96.31(2)°,V=2455(1)3,Z=4; [cis-anti-cis-dicyclohexano-18-crown-6·SbF3], C20H36F3O6Sb,Pna21,a=21.091(8),b=12.829(5),c=8.437(3),V=2283(2)3,Z=4. All species are the perching-type complexes with the antimony fluoride above the cavity and the metal lone pair pointed toward the center of the crown ring. The antimony atom interacts with all six crown oxygen atoms with Sb–O distances of 2.837(2)–3.344(2) . The antimony atom is displaced from the least square plane of the crown oxygen atoms at the distances of 1.288–1.383 . 相似文献
10.
Jerry P. Jasinski Alison Rinderspacher Gordon W. Gribble 《Journal of chemical crystallography》2010,40(1):40-47