共查询到20条相似文献,搜索用时 31 毫秒
1.
Diego Venegas‐Yazigi Hameed Mirza A. B. P. Lever Alan J. Lough Juan Costamagna Ramn Latorre 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(6):e247-e248
The Ru atom in the title compound, [RuCl(CH3CN){P(C6H5)3}2{C6H4(NH)2}]PF6·0.25H2O, has a six‐coordinate octahedral geometry, with a trans arrangement of the triphenylphosphine groups. The asymmetric unit contains two complex molecules and a partially occupied water site. Principal dimensions include Ru—N 1.958 (4)–2.044 (5), Ru—P 2.3897 (16)–2.4092 (15), and Ru—Cl 2.4280 (15) and 2.4295 (16) Å 相似文献
2.
Alexander Filippou Peter Portius Athanassios Philippopoulos Gabriele Kociok‐Khn Burkhard Ziemer 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(9):e378-e379
trans‐[MoCl2(dppe)2] [dppe is 1,2‐ethanediylbis(diphenylphosphine), C26H24P2] was obtained as a side product from the reaction of trans‐[Mo(dppe)2(N2)2] with Cp*GeCl to give the germylyne complex trans‐[Cl(dppe)2Mo[triple‐bond]Ge(η1‐Cp*)]. The crystal structures of the hemipentane (0.5C5H12) and ditetrahydrofuran (2C4H8O) solvates of trans‐[MoCl2(dppe)2], (IIIa) and (IIIb), respectively, have been determined. 相似文献
3.
Seong Huh Young Jun Park Alan. J. Lough Moo‐Jin Jun 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):416-417
The title compound, [RuH(C6H8BN4)(C21H21P)2(CO)], possesses two trans‐disposed tri‐p‐tolylphosphines in axial positions and the remaining ligands in equatorial positions. The overall geometry of the RuII ion is a distorted octahedral structure. The P—Ru—P axis deviates from linearity by about 13°. This distortion arises mainly from the steric congestion between the bulky phosphine moieties and the tetrahedral dihydrobis(pyrazol‐1‐yl)borate ligands. 相似文献
4.
Veysel T. Yilmaz Ahmet Karadag Carsten Thne Regine Herbst‐Irmer 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):948-949
In the neutral title complex, trans‐bis(2,2′‐iminodiethanol‐N,O)bis(isothiocyanato)nickel(II), [Ni(NCS)2(C4H11NO2)2], the isothiocyanate ions and the diethanolamine molecules act as monodentate and bidentate ligands, respectively. The NiII ion exhibits a distorted octahedral configuration with crystallographically imposed inversion symmetry and NNCS—Ni—Namine and NNCS—Ni—Oamine bond angles of 88.78 (10) and 89.44 (10)°, respectively. The Ni—N bond distances are in the range 2.069 (3)–2.096 (2) Å. The molecules are linked by hydrogen bonds to form a three‐dimensional infinite lattice. 相似文献
5.
Anna M. M. Meij Stefanus Otto Andreas Roodt 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(9):m352-m354
The crystal structure of the title compound, trans‐[Pd(NCS)2(C6H13N3P)2](NCS)2, is one of the few palladium(II) complexes containing two protonated water‐soluble 1,3,5‐triaza‐7‐phosphaadamantane (PTA) ligands reported to date. The compound displays a distorted square‐planar geometry, with the Pd atom on an inversion centre and with the S atoms of the thiocyanate counter‐ions occupying the axial positions above and below the equatorial plane described by the phosphine and thiocyanate ligands. Geometric parameters for the formal coordination polyhedron include a Pd—P distance of 2.2940 (8) Å, a Pd—S distance of 2.3509 (8) Å and a P—Pd—S angle of 89.45 (3)°. The effective cone angle for the PTA ligands was calculated as 114.5°. 相似文献
6.
Kenneth W. Henderson Alan R. Kennedy Arlene E. McKeown Robert E. Mulvey 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(6):674-675
The title complex, [ZrCl2(C4H8O)2(C14H14N)2]·0.5C7H8, was prepared in an unusual manner by utilizing [Mg{N(CH2Ph)2}2] as a ligand transfer reagent. The Zr atom lies in a distorted octahedral environment where steric repulsion from the large dibenzylamino ligands leads to a widening of the N—Zr—N angle [99.95 (9)°] and corresponding compression of other angles [Cl—Zr—Cl 160.95 (3)° and O—Zr—O 78.22 (7)°]. This distortion is compared with those found in the previously determined structures of the dimethylamino and diethylamino analogues. 相似文献
7.
Cara L. Nygren M. E. T. Bragg John F. C. Turner 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(1):m4-m6
In the title compound, [ZrCl2(C14H12N)2(C4H8O)2]·1.5C6H6, the Zr atom is pseudo‐octahedral, with two Cl atoms in trans positions and two tetrahydrofuran molecules in cis positions. The two 3,6‐dimethylcarbazolyl ligands are in cis positions and are canted with respect to one another. The two Zr—N distances are 2.1148 (18) and 2.1236 (18) Å, and the N—Zr—N angle is 95.08 (7)°. The title compound crystallizes as the benzene solvate, with one of the benzene molecules positioned on an inversion center. 相似文献
8.
Stefanus Otto 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(7):793-795
The crystal structure of the title compound, [PtCl(CH3)(C18H33P)2], is isostructural with various platinum(II) and palladium(II) complexes containing two bulky tricyclohexylphosphine ligands in a trans orientation. The Pt atom resides on an inversion centre, resulting in a 50% statistical disorder in the chloro and methyl positions. The most significant geometrical parameters are Pt—P 2.3431 (8), Pt—Cl 2.440 (4) and Pt—C1 2.179 (13) Å, and P—Pt—P 180, P—Pt—Cl 89.15 (12) and 90.85 (12), and C—Pt—Cl 172.7 (5)°. The effective and Tolman cone angles for the tricyclohexylphosphine ligands were calculated as 160 and 162°, respectively. 相似文献
9.
Maria H. Johansson Stefanus Otto 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(1):e12-e15
Two different crystals (A and B) were used to structurally characterize trans‐[PtCl2(PPh3)2] and to study random and systematic errors in derived parameters. The compound is isomorphous with trans‐[PdCl2(PPh3)2] and with one of the polymorphs of trans‐[PtMeCl(PPh3)2] reported previously. Half‐normal probability plot analyses based on A and B show realistic s.u.'s and negligible systematic errors. R.m.s. calculations give very good agreement between A and B, 0.0088 Å. Important geometrical parameters are Pt—P = 2.3163 (11) Å, Pt—Cl = 2.2997 (11) Å, P—Pt—Cl = 87.88 (4) and 92.12 (4)°. Half‐normal probability plots and r.m.s. calculations were also used to compare the title compound with the palladium analogue, showing small systematic differences between the compounds. The torsion angles around the Pt—P bond were found to be very similar to those reported for isomorphous complexes, as well as to the torsion angles around the Pt—As bond in trans‐[PtCl2(AsPh3)2]. The NMR coupling constants for the title compound are similar to Pt—P coupling constants reported for analogous trans complexes. 相似文献
10.
Ivan V. Korendovych Elena V. Rybak‐Akimova 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):m82-m84
The crystal structure of the title compound, [MnCl(C28H22N2O2)(C2H6O)], has been determined at 173 (2) K in the non‐centrosymmetric space group P212121. The asymmetric unit contains two molecular units. An intermolecular O—H⋯Cl hydrogen bond is formed between the OH group of an ethanol molecule coordinated to the Mn atom and the coordinated Cl− anion, and so polymeric chains of Mn‐containing fragments are formed [O—H⋯Cl = 3.1281 (16) and 3.1282 (15) Å]. The Mn atoms have a pseudo‐octahedral coordination sphere, with the four donor atoms of the Schiff base forming an equatorial plane [Mn—O distances are 1.8740 (13), 1.8717 (13), 1.8749 (13) and 1.8823 (13) Å, and Mn—N distances are 1.9868 (15), 1.9910 (14), 1.9828 (15) and 1.9979 (14) Å]. The axial positions are occupied by an ethanol molecule [Mn—O distances of 2.3069 (15) and 2.3130 (15) Å] and a Cl− ligand [Mn—Cl distances of 2.5732 (6) and 2.5509 (6) Å]. 相似文献
11.
John Kouvetakis Cole Ritter Thomas L. Groy 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(12):e564-e564
The title molecule is dimeric, i.e. di‐μ‐trimethylsiloxy‐bis(dichloroaluminium), [Al2Cl4(C3H9Si)2], and possesses exact crystallographic inversion symmetry. The O atoms of the trimethylsiloxy groups bridge the two Al atoms to form a four‐membered ring. The Si—O bond distance [1.711 (3) Å], the Al—O mean bond distance [1.806 (4) Å] and the mean Si—C bond distance [1.875 (6) Å] appear to agree well with standard data. Mean values for C—Si—C, O—Si—C, and Si—O—Al angles are 112.9 (3), 105.8 (2), and 131.8 (2)° repectively. The two ring angles O—Al—O and Al—O—Al are 84.43 (16) and 95.57 (16)°, respectively. 相似文献
12.
Ming‐Liang Tong Shao‐Liang Zheng Xiao‐Ming Chen 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):960-962
The title compound, poly[[diaquadibromocadmium‐μ‐(1,3,5,7‐tetraazatricyclo[3.3.1.13,7]decane‐N1:N5)‐aquacadmium‐di‐μ‐bromo‐aquacadmium‐μ‐(1,3,5,7‐tetraazatricyclo[3.3.1.13,7]decane‐N1:N5)‐di‐μ‐bromo] dihydrate], [Cd3Br6(C6H12N4)2(H2O)4]·2H2O, is made up of two‐dimensional neutral rectangular coordination layers. Each rectangular subunit is enclosed by a pair of Cd3(μ2‐Br)6(H2O)3 fragments and a pair of (μ2‐hmt)Cd(H2O)2Br2(μ2‐hmt) fragments as sides (hmt is hexamethylenetetramine). The unique CdII atom in the Cd2Br2 ring in the Cd3(μ2‐Br)6(H2O)3 fragment is in a slightly distorted octahedral CdNOBr4 geometry, surrounded by one hmt ligand [2.433 (5) Å], one aqua ligand [2.273 (4) Å] and four Br atoms [2.6409 (11)–3.0270 (14) Å]. The CdII atom in the (μ2‐hmt)Cd(H2O)2Br2(μ2‐hmt) fragment lies on an inversion center and is in a highly distorted octahedral CdN2O2Br2 geometry, surrounded by two trans‐related N atoms of two hmt ligands [2.479 (5) Å], two trans‐related aqua ligands [2.294 (4) Å] and two trans‐related Br atoms [2.6755 (12) Å]. Adjacent two‐dimensional coordination sheets are connected into a three‐dimensional network by hydrogen bonds involving lattice water molecules, and the aqua, bromo and hmt ligands belonging to different layers. 相似文献
13.
Pascale Lemoine Karima Bendada Bernard Viossat 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(10):m489-m491
The asymmetric unit of the title compound, [Zn(C7H5O3)2(C10H8N2)], contains one monomeric zinc complex. The Zn atom is coordinated to one 2,2′‐bipyridyl ligand via both N atoms and to two salicylate anions (Hsal−) in a bidentate chelating manner involving carboxylate O‐atom coordination. The complex exhibits a distorted octahedral geometry about the ZnII atom, with the `apical' positions occupied by one of the two N atoms of the bipyridyl ligand and an O atom from one Hsal− ligand; the Zn atom is 0.168 (1) Å out of the `basal' plane. Two intramolecular six‐membered hydrogen‐bonded rings are present, generated from interactions between the carboxyl and hydroxyl groups of the salicylate ligands. The crystal packing is governed by weak C—H⋯O and C—H⋯π interactions. 相似文献
14.
Kanidtha Hansongnern Uraiwan Saeteaw Jack Cheng Fen‐Ling Liao Tian‐Huey Lu 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(8):895-896
The Ru—N bond distances in the title complex, [Ru(NO2)(C11H9N3)(C15H11N3)]BF4 or [Ru(NO2)(tpy)(azpy)]BF4, [tpy is 2,2′:6′,2′′‐terpyridine and azpy is 2‐(phenylazo)pyridine], are Ru—Npy 2.063 (4), Ru—Nazo 2.036 (4), Ru—Nnitro 2.066 (3) Å, and Ru—Ntpy 2.082 (4), 1.982 (3) and 2.074 (4) Å. The azo N atom is trans to the nitro group. The azo N=N bond length is 1.265 (5) Å, which is the shortest found in such complexes to date. This indicates a multiple bond between Ru and the N atom of the nitro group, and π‐backbonding [dπ(Ru) π*(azo)] is decreased. 相似文献
15.
Chengbing Ma Feng Chen Changneng Chen Qiutian Liu 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m516-m518
In the title compound, [Mn(C5H3N2O4)2(H2O)2], the MnII atom lies on an inversion centre, is trans‐coordinated by two N,O‐bidentate 1H‐imidazole‐4,5‐dicarboxylate monoanionic ligands [Mn—O = 2.202 (3) Å and Mn—N = 2.201 (4) Å] and two water molecules [Mn—O = 2.197 (4) Å], and exhibits a distorted octahedral geometry, with adjacent cis angles of 76.45 (13), 86.09 (13) and 89.20 (13)°. The complete solid‐state structure can be described as a three‐dimensional supramolecular framework, stabilized by extensive hydrogen‐bonding interactions involving the coordinated water molecules, the carboxy O atoms and the protonated imidazole N atoms of the imidazole‐4,5‐dicarboxylate ligands. 相似文献
16.
Soledad García Fontn Elvira Lamas Castro Pilar Rodríguez Seoane Ezequiel M. Vzquez‐Lpez 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(5):532-533
The title compound consists of [Re(C12H10PS2)(CO)4] molecules in which the Re atom is octahedrally coordinated by four carbonyl groups and two dithiophosphinate S atoms. The main coordination distortion is imposed by the ligand bite angle of 78.29 (4)°. The bidentate coordination of the dithiophosphinate ligand involves almost equal Re—S [2.5366 (15) and 2.5535 (14) Å] and P—S distances [2.0100 (19) and 2.0212 (19) Å]. 相似文献
17.
Lian‐Qing Chen Chu‐Luo Yang Jin‐Gui Qin 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(12):m513-m515
In the title compound, [Ir2(C16H13N2O3)4Cl2]·2CH2Cl2, the two Ir atoms, 3.7075 (6) Å apart, are bridged by two Cl atoms which straddle a twofold axis of rotation through the two Ir atoms. Each Ir centre resides in a distorted octahedral environment completed by two chelating 2,5‐bis(4‐methoxyphenyl)‐1,3,4‐oxadiazole ligands, with trans‐N—N and cis‐C—C dispositions. In the stacking structure, there are two types of hydrogen bonds, involving the methoxy substitutent, an N atom of the oxadiazole ring and the dichloromethane solvent molecules. 相似文献
18.
Diego Venegas‐Yazigi A. B. P. Lever Alan J. Lough Andrs Vega Vernica Paredes‐García Ramn Latorre Juan Costamagna 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):e323-e324
The Ru atom in the title compound, [Ru(C6H5CN)2{P(C6H5)3}{C6H4(NH)2}(H2O)](BF4)2·H2O, has six‐coordinate octahedral geometry, with a trans arrangement of the triphenylphosphine ligand and the water molecule. The asymmetric unit contains one complex cation, two tetrafluoroborate anions and one solvent water molecule, which is disordered over two sites (ratio of occupancies 0.70:0.30). 相似文献
19.
Li‐Ming Wu Ling Chen Jingcao Dai Ping Lin Wen‐Xin Du Xin‐Tao Wu 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(9):e382-e382
The title compound, [Sn(C5H5NS)2(C2H4S2)2], was obtained from a 1:2 mixture of bis(ethane‐1,2‐dithiolato)tin(IV) and 2‐mercaptopyridine. The molecules are discrete monomeric trans‐octahedral units, with the SnIV atom at the centre of symmetry, planar 2‐mercaptopyridine zwitterions and SnS2C2 groups in twist–envelope conformations. The 2‐mercaptopyridine ligands are monodentate and are bonded through the S atoms. The S—Sn distances between the S atom of edt (edt is ethane‐1,2‐dithiolate) and the Sn atom are 2.473 (1) and 2.505 (1) Å, which are slightly longer than the S—Sn distance in Sn(edt)2 of 2.390 (1) Å. The bond between the 2‐mercaptopyridine S atom and the Sn atom are, remarkably, weaker than the S—Sn bond involving edt. 相似文献
20.
Allison M. Mills Kristel Flinzner Arno F. Stassen Jaap G. Haasnoot Anthony L. Spek 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(4):m243-m245
In the title complex, [Cu(BF4)2(1tpc)4] [1tpc is 1‐(3‐chloropropyl)‐1,2,4‐triazole, C5H8ClN3], the copper(II) centres reside in a tetragonally distorted octahedral coordination environment. Four 1tpc ligands are coordinated to the metal atom via the N4 atom of the triazole rings in a square‐planar arrangement, with Cu—N bond lengths in the range 2.002 (2)–2.019 (2) Å. Two tetrafluoroborate anions, in the axial positions above and below the square plane, are weakly coordinated to the copper(II) centre, with Cu—F distances of 2.4009 (18) and 2.5096 (18) Å. 相似文献