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1.
Natalia V. Kuratieva Marina I. Naumova Dmitry Yu. Naumov Nina V. Podberezskaya 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(1):i1-i3
The structure of hexaaquanickel(II) bis(hypophosphite), [Ni(H2O)6](H2PO2)2, has been determined. The crystals are prismatic. The packing of the Ni and P atoms (not the entire hypophosphite anions) is the same as in the structures of [Co(H2O)6](H2PO2)2 and [Co0.5Ni0.5(H2O)6](H2PO2)2. The NiII cations have a pseudo‐face‐centered cubic cell, with cell parameter a 10.216 Å and tetrahedral cavities occupied by P atoms. The NiII cation has crystallographically imposed twofold symmetry and has an octahedral coordination sphere consisting of six water O atoms, two of which also lie on the twofold axis. The planes of oppositely coordinated water molecules are in a cross conformation. The geometry of the hypophosphite anion is close to point symmetry mm2. The hypophosphite anions are hydrogen bonded to the coordinated water molecules. 相似文献
2.
Yaln Elerman Hülya Kara Sabahat
zcan Engin Kendi 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):950-951
The crystal structure of the title compound, chloro(1,10‐phenanthroline‐N,N′)(1‐phenyl‐1,3‐butanedionato‐O,O′)copper(II), [CuCl(C10H9O2)(C12H8N2)], has been determined. The CuII ion displays a distorted square‐pyramidal coordination, being linked to the two O atoms of the benzoylacetonate ligand and the two N atoms of the 1,10‐phenanthroline ligand in the basal plane, and the Cl atom in the apical site. TheCu—N, Cu—O and Cu—Cl bond lengths are 2.043 (2)/2.025 (2), 1.914 (2)/1.941 (2) and 2.485 (1) Å, respectively. 相似文献
3.
Jose E. Cortes‐Figueroa Madeline S. Leon‐Velazquez Johanna Ramos Jerry P. Jasinski David A. Keene Jeffrey D. Zubkowski Edward J. Valente 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(12):1435-1437
In the present redetermination of the complex cis‐tetracarbonylbis(tricyclohexylphosphine)molybdenum(0), (I), [Mo(C18H33P)2(CO)4] or cis‐{η1‐[P(C6H11)3]2}Mo(CO)4, the Mo atom has a distorted octahedral geometry with a large P—Mo—P angle of 104.8 (1)°. A strong trans influence on the carbonyls in (I) is seen in a shortening of the Mo—C and a lengthening of the C—O distances opposite the phosphines compared with those that are cis. This influence is greatly diminished in the complex pentacarbonyl(tricyclohexylphosphine)molybdenum(0), (II), [Mo(C18H33P)(CO)5] or {η1‐[P(C6H11)3]}Mo(CO)5, the core of which has a slightly distorted C4v geometry. 相似文献
4.
Guang‐Qi Xiang Wei‐Dong Wang Mao‐Lin Hu Zhi‐Min Jin Ya‐Ping Lü 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):m311-m312
In the title compound, [FeII(NCS)2(CH6N4S)2], the FeII cation is surrounded by two S atoms and two N atoms from thiocarbohydrazide groups and by two N atoms from thiocyanate groups. The geometry around the FeII cation, which is located on a center of inversion, is distorted octahedral. The thiocarbohydrazide molecule assumes a cis–trans conformation, which is reinforced by an N—H⋯N hydrogen bond. Molecules of the title compound are connected via intermolecular N—H⋯S and N—H⋯N hydrogen bonds to form a three‐dimensional network structure. 相似文献
5.
Magnus Magnussen Theis Brock‐Nannestad Jesper Bendix 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):m51-m53
The structure of the pentaaquaoxovanadium(IV) ion in a salt with singly charged counter‐ions is presented. In [VO(H2O)5](CF3SO3)2, the six‐coordinate V atom is coordinated to the oxo group with a short bond [1.577 (2) Å]. The equatorial V—O bond lengths are 2.0262 (18) and 2.0277 (17) Å. The aqua ligand trans to the oxo group is subject to its trans influence, which leads to a somewhat longer V—O bond [2.175 (2) Å]. In the structure, the cation and both anions are situated on crystallographic mirror planes. The cation and anions engage in a number of relatively long hydrogen bonds [2.725 (2)–2.834 (2) Å]. 相似文献
6.
Zhe‐Ming Wang Jun Luo Bai‐Wang Sun Chun‐Hua Yan Chun‐Sheng Liao Song Gao 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(6):e242-e244
The title compounds are isomorphous, comprised of neutral monomeric [M(phen)2(dca)2] [(I): M = Mn, (II): M = Zn; phen is 1,10‐phenanthroline, C12H8N2; dca is dicyanamide, C2N3] molecules. In the molecule, the divalent metal ion is in a distorted octahedral coordination environment formed by six N atoms from the phen and dca ligands. The Mn—N [2.144 (2)–2.319 (2) Å] and Zn—N [2.075 (2)–2.245 (2) Å] distances are in agreement with the difference in size of the two divalent ions. 相似文献
7.
8.
Andrew Kellett Georgina Rosair Michael Devereux Mary McNamara Malachy McCann 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(11):m358-m362
The structures of [Cu(AA)6](ClO4)2, (I), and [Mn(AA)6](ClO4)2, (II) (AA is acrylamide, also known as prop‐2‐enamide; C3H5NO), display both intra‐ and intermolecular N—H...O hydrogen bonding. A three‐dimensional network is propagated via the perchlorate counter‐ions. There are two crystallographically independent molecules in the copper complex, with the most significant difference between them being the conformation of one symmetry‐related pair of AA ligands which are in the unusual syn conformation. The copper complex exhibits syn/anti disorder of the =CH2 group in one pair of symmetry‐related AA ligands. The CuII and MnII centres are both situated on centres of inversion. The copper complex cation has octahedral coordination geometry with typical Jahn–Teller distortions. 相似文献
9.
Theivanayagam C. Deivaraj Jagadese J. Vittal 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(7):775-776
In the title compound, [Ni(C2H3OS)2(C18H15P)2], the Ni atom lies on an inversion centre and the triphenyl phosphine and thioacetate ligands are bonded to the central NiII atom in a trans fashion, with Ni—S = 2.2020 (8) and Ni—P = 2.2528 (8) Å, and angle S—Ni—P = 92.47 (3)°. 相似文献
10.
Ondrej Pav 《Tetrahedron letters》2009,50(35):5015-5017
New methods for preparation of metallo dinucleotides with transition metals directly bonded to phosphorus are presented. (Pentacarbonyl)tungstate(−1) and (pentacarbonyl)molybdate(−1) dimers are prepared by the reaction of dinucleotide-H-phosphonate with M(CO)5(THF) (M = W, Mo). These syntheses can be completed in solution or on solid-phase. 相似文献
11.
Xia Li Zhuo‐Yong Zhang Dao‐Yong Wang Hai‐Bin Song Ying‐Quan Zou 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(2):m81-m83
The title compound, [Dy2(C8H7O2)6(C12H8N2)2], forms binuclear complexes, viz. di‐μ‐4‐methylbenzoato‐κ4O:O′‐bis[bis(4‐methylbenzoato‐κ2O,O′)(1,10‐phenanthroline‐κ2N,N′)dysprosium(III)] tetra‐μ‐4‐methylbenzoato‐κ8O:O′‐bis[(4‐methylbenzoato‐κ2O,O′)(1,10‐phenanthroline‐κ2N,N′)dysprosium(III)]. There are two independent binuclear complexes in the asymmetric unit, both of which are centrosymmetric. In one, the DyIII ions are linked by two bridging 4‐methylbenzoate groups, while in the other, the DyIII ions are linked by four bridging 4‐methylbenzoate groups. The remaining 4‐methylbenzoate groups and 1,10‐phenanthroline units coordinate to just one metal ion in bidentate modes. 相似文献
12.
Bernadette S. Creaven R. Alan Howie Conor Long 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):385-387
In pentacarbonyl(4‐phenylpyridine)tungsten(0), [W(C11H9N)(CO)5], the molecules have mm site symmetry and the pyridine ligand, with m symmetry, is completely planar. In pentacarbonyl(2‐phenylpyridine)chromium(0), [Cr(C11H9N)(CO)5], the molecules are in general positions and the phenyl and pyridine rings of the ligand are twisted by 67.7 (3)° with respect to one another by rotation about the C—C bond joining them. In both compounds, the axial M—Ccarbonyl bond trans to the M—Nligand bond is significantly shorter than the equatorial M—Ccarbonyl bonds. 相似文献
13.
Roger D. Willett Brendan Twamley 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(6):706-708
The title compound, (C10H11N2)2[CuBr3], contains layers of planar monoprotonated cations. Isolated trigonal–planar [CuBr3]2? anions are hydrogen bonded to cations in adjacent layers, providing three‐dimensional stability to the crystal structure. 相似文献
14.
Nadia M. Comerlato William T. A. Harrison R. Alan Howie John Nicolson Low Alexandre C. Silvino James L. Wardell Solange M. S. V. Wardell 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(2):m105-m108
The title compounds are salts of the general form (Q+)2[Zn(dmit)2]2?, where dmit corresponds to the ligand (C3S5)? present in both and Q+ to the counter‐cations (nBu4N)+ [or C16H36N+] and (Ph4As)+ [or C24H20As+], respectively. In the first case, Zn is in the 4e special positions of space group C2/c and hence the [Zn(dmit)2]2? dianion possesses twofold axial crystallographic symmetry. Including these, there are now 11 known examples of [Zn(dmit)2]2? or its analogues, with O replacing the exocyclic thione S, and [Zn(dmio)2]2? dianions in nine structures with various Q. Comparison of these reveals a remarkable variation in details of the conformation which the dianion may adopt in terms of Zn coordination, equivalence of the Zn—S bond lengths, displacement of Zn from the plane of the ligand and overall dianion shape. 相似文献
15.
Xu‐Cheng Fu Ming‐Tian Li Xiao‐Yan Wang Cheng‐Gang Wang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):m13-m15
In the crystal structure of the title complex, [Zn(C3H2O4)(C12H8N2)(H2O)2], the ZnII atom displays a distorted octahedral geometry, being coordinated by two N atoms from the 1,10‐phenanthroline ligand, two O atoms from different carboxylate groups of the chelating malonate dianion and two O atoms of cis water molecules. The complex molecules are linked to form a three‐dimensional supramolecular array by both hydrogen‐bonding interactions between coordinated water molecules and the uncoordinated carboxylate O atoms of neighboring molecules, and aromatic π–π stacking interactions between neighboring phenanthroline rings. 相似文献
16.
Santiago Cabaleiro‐Martínez Jesús Castro Jaime Romero Jos A. García‐Vzquez Antonio Sousa 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(6):e249-e250
The title compound, [Co(H2O)6](CH3C6H4SO3)2, has a structure where the metal atom is surrounded by six molecules of water forming the cation and the anion is deprotonated 4‐toluenesulfonic acid. The Co atom is in a nearly regular octahedral coordination geometry, with Co—O distances between 2.0529 (14) and 2.0810 (16) Å, and angles ranging from 87.25 (9) to 92.75 (9)°. The supramolecular structure consists of parallel layers of cations and anions. The anions are arranged with their sulfonate groups directed towards the cation layer in an alternating fashion and form hydrogen bonds with the water molecules of the cation. 相似文献
17.
Irene Ara Fatima El Bahij Mohamed Lachkar 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):m265-m267
The title compound, [Ag(C3H5OS2)]n, is polymeric in the solid state and adopts a layered structure in which each Ag atom is five‐coordinated in a distorted trigonal‐bipyramidal geometry defined by four S atoms belonging to four different xanthate groups and by a neigbouring Ag atom [Ag⃛Ag = 3.0540 (8) Å]. Each S atom is three‐coordinated to one C and two Ag atoms. The structure can be envisaged as being formed by Ag2(S2COEt)2 units in which every S atom is bonded to another Ag atom from a different unit and the Ag atoms are also bonded to two different S atoms of two other units. The result is a two‐dimensional network of condensed metallacycles of six or eight atoms. 相似文献
18.
Khaoulani Idrissi Abdallah Saadi Mohamed Rafiq Mohamed Guelzim Abdelhalim 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):i43-i45
The structure of the title compound, (NH4)2[Mg(H2O)6]3(HPO3)4, consists of [Mg(H2O)6]2+ and (NH4)+ cations and (HPO3)2− anions held together by an intricate network of hydrogen bonds involving all H atoms except for one linked directly to a P atom. The Mg2+ cations are octahedrally coordinated by six water molecules. One of the Mg atoms is located on a site with 2/m symmetry, whereas the other Mg atom and the P and N atoms occupy sites with m symmetry. 相似文献
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20.
Maria H. Johansson ke Oskarsson 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(2):m102-m104
Tetrakis(dimethyl sulfide)palladium(II) bis(tetrafluoroborate), [Pd(C2H6S)4](BF4)2, (I), and tetrakis(1,4‐oxathiane‐κS)palladium(II) bis(tetrafluoroborate), [Pd(C4H8OS)4](BF4)2, (II), both crystallize as mononuclear square‐planar complexes with tetrafluoroborate as the counter‐ions. The Pd atom accepts four S‐donor atoms and is positioned at an inversion centre in both compounds. The two unique S atoms in the dimethyl sulfide complex, (I), are disordered. The Pd—S distances are in the range 2.3338 (12)–2.3375 (12) Å in (I), and the corresponding distances in the thioxane complex, (II), are 2.3293 (17) and 2.3406 (17) Å. The anions in both compounds interact weakly with the Pd atom. 相似文献