共查询到20条相似文献,搜索用时 31 毫秒
1.
Shu‐Qin Liu Hisashi Konaka Takayoshi Kuroda‐Sowa Gui‐Ling Ning Megumu Munakata 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(4):m194-m196
In the title complex, [Ag2(C7H4NO4)2(C16H16S2)], each AgI atom is trigonally coordinated by one S atom of a 2,11‐dithia[3.3]paracyclophane (dtpcp) ligand, and by one N and one O atom of a 6‐carboxypyridine‐2‐carboxylate ligand. Dtpcp acts as a bidentate ligand, bridging two inversion‐related AgI atoms to give a dinuclear silver(I) compound. The dinuclear moieties are interconnected via O—H·O hydrogen bonds to form a two‐dimensional zigzag sheet. Two such sheets are interwoven viaπ–π interactions between pyridine rings, affording an interwoven bilayer network. 相似文献
2.
Anna Doga Katarzyna Baranowska Agnieszka Pladzyk Katarzyna Majcher 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(7):m259-m263
The complexes [2‐(1H‐imidazol‐4‐yl‐κN3)ethylamine‐κN]bis(tri‐tert‐butoxysilanethiolato‐κS)cobalt(II), [Co(C12H27O3SSi)2(C5H9N3)], and [2‐(1H‐imidazol‐4‐yl‐κN3)ethylamine‐κN]bis(tri‐tert‐butoxysilanethiolato‐κS)zinc(II), [Zn(C12H27O3SSi)2(C5H9N3)], are isomorphous. The central ZnII/CoII ions are surrounded by two S atoms from the tri‐tert‐butoxysilanethiolate ligand and by two N atoms from the chelating histamine ligand in a distorted tetrahedral geometry, with two intramolecular N—H...O hydrogen‐bonding interactions between the histamine NH2 groups and tert‐butoxy O atoms. Molecules of the complexes are joined into dimers via two intermolecular bifurcated N—H...(S,O) hydrogen bonds. The ZnII atom in [(1H‐imidazol‐4‐yl‐κN3)methanol]bis(tri‐tert‐butoxysilanethiolato‐κ2O,S)zinc(II), [Zn(C12H27O3SSi)2(C4H6N2O)], is five‐coordinated by two O and two S atoms from the O,S‐chelating silanethiolate ligand and by one N atom from (1H‐imidazol‐4‐yl)methanol; the hydroxy group forms an intramolecular hydrogen bond with sulfur. Molecules of this complex pack as zigzag chains linked by N—H...O hydrogen bonds. These structures provide reference details for cysteine‐ and histidine‐ligated metal centers in proteins. 相似文献
3.
Fa‐Yan Meng Xu‐Qing Liu Seik Weng Ng 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(7):m341-m342
The terephthalate dianion and the bis(imidazolyl)benzene ligand of the title compound, {[Zn(C8H4O4)(C20H14N4)]·C2H6O}n, each bridges two adjacent zinc centers, resulting in a layer‐type coordination polymer; the zinc center shows tetrahedral coordination. The disordered ethanol solvent molecules occupy the spaces between the layers and are hydrogen bonded to the layers. The two symmetry‐independent dianions lie on different inversion sites. 相似文献
4.
Kristin Kirschbaum Albert Fratini Shawn Swavey 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(5):m186-m187
The title compound, [Tb2(C24H12F9O6S3)2(C8H6N4)]·C4H8O2, has two terbium(III) centers bridged by the polyazine ligand 2,2′‐bipyrimidine (bpm), which is distorted from planarity by 7.0 (2)°. The terminal ligand 4,4,4‐trifluoro‐1‐(2‐thienyl)butane‐1,3‐dione (tta) is bidentate, coordinating through the two O atoms, while the bridging ligand is bis‐bidentate, coordinating through four equivalent N atoms. Both the complex and the ethyl acetate solvent molecules are disordered. The structure was refined as a non‐merohedral twin. 相似文献
5.
Eric P. Kelson Norman S. Dean Edgar Algarín 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(3):m108-m110
The title compound, [Ru(C6H6NO2)2(C15H11N3)(H2O)]·CH3CN·H2O, is a transfer hydrogenation catalyst supported by nitrogen‐donor ligands. This octahedral RuII complex features rare monodentate coordination of 3‐methoxy‐2‐pyridonate ligands and interligand S(6)S(6) hydrogen bonding. Comparison of the title complex with a structural analog with unsubstituted 2‐pyridonate ligands reveals subtle differences in the orientation of the ligand planes. 相似文献
6.
Sergio Baggio M. Enriqueta Díaz de Vivar Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(5):m192-m194
The title compound, [Zn(S2O3)(C18H12N6)(H2O)]·0.5H2O, contains two almost identical independent monomeric moieties composed of an octahedral Zn centre coordinated by a tridentate 2,4,6‐tri‐2‐pyridyl‐1,3,5‐triazine (tpt) ligand, one aqua ligand and an O,S‐chelating thiosulfate anion. The structure is stabilized by a solvent water molecule. Multiple strong hydrogen bonds with additional weaker π–π interactions between tpt groups define a multiple column spatial organization. 相似文献
7.
Eun‐Ju Kim Chong‐Hyeak Kim Sock‐Sung Yun 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(9):m427-m429
The title complex, [Li2(C6H3N2O5)2(H2O)4], contains two kinds of Li atoms, viz. five‐coordinated and four‐coordinated. The five‐coordinated Li ion has a tetragonal–pyramidal geometry, with a water molecule in the apical position and four O atoms from two 2,4‐dinitrophenolate (2,4‐DNP) ligands in the basal plane. The four‐coordinated Li ion has a tetrahedral geometry, with three water molecules and one phenolate O atom of a 2,4‐DNP ligand. The Li ions are bridged by a phenolate O atom, giving the complex a dinuclear structure. The crystal packing is stabilized by O—H...O hydrogen‐bonding interactions involving the water molecules and nitro O atoms. 相似文献
8.
Yi‐Min Jiang Ju‐Lan Zeng Kai‐Bei Yu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(10):m543-m545
The title compound, [Cu2(OH)2(C12H8N2)2(H2O)2][Cu(C10H9NO5S)2]·6H2O, is comprised of a copper‐centred complex cation and a copper‐centred complex anion; the cation lies about an inversion centre and in the anion the Cu atom lies on an inversion centre. In the doubly charged bridged dicopper cation, each Cu centre has distorted square‐pyramidal geometry. In the square‐planar dianion, two sulfonate ligands are trans coordinated to the Cu atom via a deprotonated hydroxyl O atom and an imine N atom, forming two six‐membered chelate rings. The structure is stabilized by an extensive hydrogen‐bond system and aromatic‐ring stacking interactions. 相似文献
9.
Satyanarayan Pal Samudranil Pal 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(5):m273-m274
In the title complex, [RuCl2(C7H7NO)(C2H6OS)2], the metal ion is at the centre of a distorted octahedral NOCl2S2 coordination sphere. The neutral 2‐acetylpyridine ligand binds to the metal ion through the pyridine N and carbonyl O atoms, forming a five‐membered chelate ring. The monodentate S‐coordinating dimethyl sulfoxide molecules are mutually cis, and the two remaining positions in the coordination sphere are occupied by two mutually trans Cl? ions. 相似文献
10.
Wei‐Wei Fu Man‐Sheng Chen Yang Liu Fu‐Xing Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(4):384-387
The title compound, (C6H9N2S)[ZnCl3{SC(NH2)2}], exists as a zincate where the zinc(II) centre is coordinated by three chloride ligands and a thiourea ligand to form the anion. The organic cation adopts the protonated 4,6‐dimethyl‐2‐sulfanylidenepyrimidin‐1‐ium (L) form of 4,6‐dimethylpyrimidine‐2(1H)‐thione. Two short N—H...Cl hydrogen bonds involving the pyrimidine H atoms and the [ZnCl3L]− anion form a crystallographically centrosymmetric dimeric unit consisting of two anions and two cations. The packing structure is completed by longer‐range hydrogen bonds donated by the thiourea NH2 groups to chloride ligand hydrogen‐bond acceptors. 相似文献
11.
Lea Glaar Marjeta Radiek Primo egedin Amalija Golobi
《Acta Crystallographica. Section C, Structural Chemistry》2005,61(12):m526-m528
In the title compound, [Cu2(CHO2)2(C5H4NO)2(C5H5NO)2]·1.02CH3CN, the dimeric unit is centrosymmetric, with two bidentate pyridin‐2‐olate and two bidentate formate syn–syn bridges, and two apical 2‐pyridone ligands coordinated through the O atoms. The N atom from the apical 2‐pyridone ligand is a donor of a hydrogen bond to the O atom of the bridging pyridinolate ligand of the same complex. The coordination polyhedron of the Cu atom is a distorted square pyramid. 相似文献
12.
Nikolay N. Sveshnikov Michael H. Dickman Michael T. Pope 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):1193-1195
The title structure, [Rh2(C7H5O3)4(C2H6OS)2]·[Rh2(C4H7O2)4(C2H6OS)2]·2C2H6O, contains two discrete neutral Rh–Rh dimers cocrystallized as the ethanol disolvate. Each dimer is situated on an inversion center. The butyrate chain displays disorder in one C‐atom position. In each dimer, the dimethyl sulfoxide ligand (dmso) is bound via S, as expected. The ethanol is a hydrogen‐bond acceptor for one p‐hydroxybenzoate hydroxyl group and acts as a hydrogen‐bond donor to the dmso O atom of a neighboring p‐hydroxybenzoate dirhodium complex. A third hydrogen bond is formed from the other p‐hydroxybenzoate hydroxyl group to the dmso O atom of a butyrate–dirhodium complex. 相似文献
13.
Lars V. Andreasen Alan Hazell Ole Wernberg 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(7):m385-m387
In the title compound, [Pt(C18H15P)(C28H28P2S)](ClO4)2·C3H6O or [Pt(PPh3)(PSP)](ClO4)2·CH3COCH3, where PSP is the potentially tridentate chelate ligand bis(2‐diphenylphosphinoethyl) sulfide, all three donor groups of the PSP ligand are coordinated to the central Pt atom, with Pt—P = 2.310 (1) Å and Pt—S = 2.343 (1) Å. The fourth coordination site is occupied by the P donor of the triphenylphosphine ligand [Pt—P = 2.289 (1) Å]. The complex cation has exact mirror symmetry, with the S atom, the Pt atom and the P atom of the PPh3 ligand in the mirror plane. The Pt atom has a distorted square‐planar coordination geometry. A π–π interaction is present between the phenyl rings of the PPh3 ligand and the terminal –PPh2 group of the PSP chelate. 相似文献
14.
Iliana E. Medina‐Ramírez Mark J. Fink James P. Donahue 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(12):m475-m477
The title compound, [Zn3(C9H21SiS)6] or [(iPr3SiS)Zn(μ‐SSiiPr3)2Zn(μ‐SSiiPr3)2Zn(SSiiPr3)], is the first structurally characterized homoleptic silanethiolate complex of zinc. A near‐linear arrangement of three ZnII ions is observed, the metals at the ends being three‐coordinate with one terminally bound silanethiolate ligand. The central ZnII ion is four‐coordinate and tetrahedral, with two bridging silanethiolate ligands joining it to each of the two peripheral ZnII ions. The nonbonding intermetallic distances are 3.1344 (11) and 3.2288 (12) Å, while the Zn...Zn...Zn angle is 172.34 (2)°. A trimetallic silanethiolate species of this type has not been previously identified by X‐ray crystallography for any element. 相似文献
15.
Yong‐Min Lee Sung Kwon Kang Young‐Inn Kim Sung‐Nak Choi 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(8):m453-m454
In the title compound, dibromo[(6R,7S,8S,14S)‐1,3,4,7,7a,8,9,10,11,13,14,14a‐dodecahydro‐7,14‐methano‐2H,6H‐dipyrido[1,2‐a:1′,2′‐e][1,5]diazocine‐κ2N,N′]zinc(II), [ZnBr2(C15H26N2)], the chiral nitrogen‐chelating alkaloid (?)‐l ‐sparteine acts as a bidentate ligand, with two bromide ligands occupying the remaining coordination sites, producing a slightly distorted tetrahedral structure. The dihedral angle between the N—Zn—N and Br—Zn—Br planes is 82.4 (1)°. The distortion of the tetrahedral coordination is demonstrated by the fact that the midpoint of the N?N line does not lie in the Br—Zn—Br plane, but is tilted towards one of the N atoms by 0.164 Å. Similarly, the midpoint of the Br?Br line is tilted towards one of the Br atoms by 0.117 Å. 相似文献
16.
Stphane A. Baudron Patrick Batail 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(12):m575-m577
The crystal structures of the title compounds, (C24H20P)2[Ni(C6H6O4S2)2], (I), and (C24H20P)2[Ni(C6H6O4S2)2]I, (II), in the diamagnetic reduced (2–) and paramagnetic oxidized (1–) states, are reported at 200 and 293 K, respectively. In both compounds, the Ni atom lies on an inversion centre and the NiS4 coordination is thus required to be exactly planar. In the diamagnetic complex, (I), the Ni—S distances are 2.1818 (7) and 2.1805 (6) Å, while they are 2.1481 (6) and 2.1392 (5) Å in the paramagnetic complex, (II). This results from both the different complex core oxidation states and the different conformations of the methoxycarbonyl groups. 相似文献
17.
Fatma Tezcan Hümeyra Paaolu Okan Z. Yeilel Halis
lmez Hasan Ibudak Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):m335-m337
In the crystal structure of the title compound, [Ni(C6H6N2O)2(H2O)2](C7H4NO3S)2·4H2O or [Ni(pia)2(H2O)2](sac)2·4H2O (pia is picolinamide or pyridine‐2‐carboxamide, and sac is the saccharinate anion), the Ni2+ cation, located on a centre of symmetry, is coordinated by two symmetry‐related aqua ligands together with a pair of symmetry‐related bidentate pia molecules and exhibits a distorted octahedral environment. The unique unligated sac anion in the asymmetric unit resides on a general position and has a single negative charge. The coordinated water molecules link the sac ions to the metal complex via O—H⋯O hydrogen bonds. In addition, the sac ions are linked to the metal complex via intermolecular π–π interactions between the benzene ring of the sac ion and the pyridine ring of a pia ligand. Each uncoordinated water molecule is hydrogen bonded to sac moieties through O—H⋯O and O—H⋯N hydrogen bonds. 相似文献
18.
Azizolla Beheshti William Clegg Nahid Ebrahimi Filoori Luca Russo 《Acta Crystallographica. Section C, Structural Chemistry》2011,67(5):m149-m153
Two polymorphs of the title compound, (C8H20N)[W2S4(S4)(C15H22BN6)], have been obtained unexpectedly by attempted recrystallization of a mixed‐metal–sulfur cluster complex from different solvents. The dinuclear complex anion contains WV in two different coordination environments, one of them distorted octahedral with a tris(pyrazolyl)borate anion, a terminal sulfide and two bridging sulfide ligands, the other distorted square‐pyramidal with a terminal sulfide, two bridging sulfide and a chelating tetrasulfide ligand. The three independent anions in the two polymorphs have essentially the same geometry. The central W2S2 ring is a slightly folded rhombus with acute angles at the S atoms, and the WS4 chelate ring is an envelope with one noncoordinating S atom as the flap. The second polymorph, with Z′ = 2 and pseudo‐inversion symmetry relating the anions of the asymmetric unit, also displays pseudo‐translation features in its layer structure, and all examined crystals were found to be twinned, possibly as a consequence of this structural feature. 相似文献
19.
Alexander J. Blake Vito Lippolis Tiziana Pivetta Gaetano Verani 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(8):m364-m367
In the first title salt, [Cu(C12H8N2)2(C5H10N2Se)](ClO4)2, the CuII centre occupies a distorted trigonal–bipyramidal environment defined by four N donors from two 1,10‐phenanthroline (phen) ligands and by the Se donor of a 1,3‐dimethylimidazolidine‐2‐selone ligand, with the equatorial plane defined by the Se and by two N donors from different phen ligands and the axial sites occupied by the two remaining N donors, one from each phen ligand. The Cu—N distances span the range 1.980 (10)–2.114 (11) Å and the Cu—Se distance is 2.491 (3) Å. Intermolecular π–π contacts between imidazolidine rings and the central rings of phen ligands generate chains of cations. In the second salt, [Cu(C10H8N2)2(C3H6N2S)](ClO4)2, the CuII centre occupies a similar distorted trigonal–bipyramidal environment comprising four N donors from two 2,2′‐bipyridyl (bipy) ligands and an S donor from an imidazolidine‐2‐thione ligand. The equatorial plane is defined by the S donor and two N donors from different bipy ligands. The Cu—N distances span the range 1.984 (6)–2.069 (7) Å and the Cu—S distance is 2.366 (3) Å. Intermolecular π–π contacts between imidazolidine and pyridyl rings form chains of cations. A major difference between the two structures is due to the presence in the second complex of two N—H...O hydrogen bonds linking the imidazolidine N—H hydrogen‐bond donors to perchlorate O‐atom acceptors. 相似文献
20.
Jaroslaw Chojnacki Magdalena Kloskowska Urszula Wjtowicz Wieslaw Wojnowski 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(8):m349-m351
In the title mononuclear lead silanethiolates, [Pb(C12H27O3SSi)2(C10H8N2)], (I), and [Pb(C12H27O3SSi)2(C24H16N2)]·0.5C6H6, (II), the Pb atom shows a distorted square‐pyramidal coordination with a PbON2S2 core in which one S atom lies in an axial position. Intermolecular π–π and C—H...π interactions stabilize the structures. The benzene solvent molecule in (II) lies on an inversion centre. 相似文献