共查询到20条相似文献,搜索用时 15 毫秒
1.
Uwe‐Christoph Knig Michael Berkei Claudia Hirsch Hans Preut Terence Nigel Mitchell 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e450-e451
The synthesis and the X‐ray structural analysis of the title compound, μ‐chloro‐1:2κ2Cl‐trichloro‐1κCl,2κ2Cl‐tetramethyl‐1κ2C,2κ2C‐(N‐methylpyrrolidin‐2‐one)‐1κO‐ditin(IV), [Sn2Cl4(CH3)4(C5H9NO)], are described. The title compound is found to exhibit a distorted trigonal–bipyramidal geometry at both SnIV atoms. The Sn—Cl—Sn angle involving the bridging chlorine ligand is 135.56 (5)°, with the Sn—Cl bond lengths being 2.5704 (13) and 3.1159 (13) Å. 相似文献
2.
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
3.
Seik Weng Ng A. Aziz Yang Farina Abdul Hamid Othman Ibrahim Baba K. Sivakumar Hoong‐Kun Fun 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):e84-e85
The title compound, [Sn(CH3)2(C5H10NO2S2)2], has crystallographic mirror symmetry (C—Sn—C on mirror plane) and the coordination polyhedron around the Sn atom is a tetrahedron [C—Sn—C 139.3 (2)° and S—Sn—S 82.3 (1)°] distorted towards a skew‐trapezoidal bipyramid owing to an intramolecular Sn?S contact [3.0427 (6) Å]. The molecules are linked into a linear chain by intermolecular O—H?O hydrogen bonds [O?O 2.646 (3) Å]. 相似文献
4.
Rafal Kruszynski Tadeusz J. Bartczak 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(9):m439-m441
The title compound, [Sn4(CH3)8(C13H8Cl2NO2)2(C2H5O)2O2], is a centrosymmetric dimer, with three linearly fused four‐membered Sn—O—Sn—O rings. The coordination polyhedron of the Sn atom bonded to the carboxylate can be described as trigonal–bipyramidal distorted toward square‐pyramidal. That of the second Sn atom is similar, but the distortion towards square‐pyramidal geometry is greater. The Sn—O and Sn—C distances are 2.020 (2)–2.226 (2) and 2.096 (4)–2.114 (4) Å, respectively. The benzene rings of the 2‐[(2,3‐dichlorophenyl)amino]benzoate ligand subtend an angle of 50.49 (17)°; the conformation of the ligand is stabilized by intramolecular N—H⋯Cl and N—H⋯O hydrogen bonds. The structure is assembled viaπ–π stacking interactions to form chains parallel to [10]. 相似文献
5.
Uwe‐Christoph Knig Michael Berkei Claudia Hirsch Hans Preut Terence Nigel Mitchell 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e452-e453
The synthesis and X‐ray structure analysis of the title compound, [SnBr2(CH3)2(C4H9NO)2], are described. The crystal contains molecules which are separated by normal van der Waals distances. Organotin(IV) compounds are found in a variety of structural types, in which the Sn atom can, for example, be hexacoordinated. In this case, the preferred solid‐state molecular structure of the central atom is octahedral. The degree of distortion and the configuration depend on the ligands. 相似文献
6.
T. V. Sundar V. Parthasarathi K. Sarkunam M. Nallu B. Walfort H. Lang 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):o464-o466
The title compounds, C15H16ClN2O+·Br−·1.5H2O and C15H16BrN2O+·Br−·1.5H2O, are isomorphous. The benzene ring is oriented nearly normal to the pyridine ring in both compounds. The molecular packing is mainly influenced by intermolecular O—H⋯O and O—H⋯Br interactions, as well as weak intramolecular C—H⋯O interactions. The H2OBr− units form an extended water–bromide chain, with a bridging water molecule on a twofold axis. 相似文献
7.
Christian Nther Jan Greve 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):377-378
In the structure of the title compound, [CuBr(C6H8N2)]n, each Cu2+ cation is surrounded by two 2,3‐dimethylpyrazine ligands and two Br? anions in a distorted tetrahedral arrangement. The Cu2+ cations and Br? anions form (Cu2Br2)2 rhomboid dimers located around a centre of inversion. The 2,3‐dimethylpyrazine ligands connect the Cu2+ cations in the dimers into sheets parallel to (010). 相似文献
8.
Mari Pretorius D. Bradley G. Williams Andreas Roodt Alfred Muller 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(6):o384-o386
The title compounds, Ph2PCH2N(H)Ph or C25H22NP and Ph2PCH2N(CH3)Ph or C26H24NP, respectively, are isomorphous, with calculated theoretical Tolman angles of 174 and 182°. 相似文献
9.
Huai‐Gang Zhu Guang Yang Xiao‐Ming Chen 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):969-970
Di‐2‐pyridyl ketone reacts with CdBr2 in water to form the title centrosymmetric dinuclear complex, [Cd2Br4(C11H10N2O2)2]·3H2O, in which each metal atom is coordinated by an N,O,N′‐chelated di‐2‐pyridylmethanediol ligand, two bridging bromo ligands and one terminal bromo ligand in a distorted octahedral geometry. 相似文献
10.
Jos S. Casas Emilia García‐Martínez María Soledad García‐Tasende Agustín Snchez Jos Sordo Ezequiel M. Vzquez‐Lpez María Jos Vidarte 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):932-933
The title compound, [SnCl2(CH3)(C6H5)(C5H8N2)2], was obtained by reaction of dichloromethylphenyltin(IV) and 3,5‐dimethylpyrazole (dmpz) in chloroform, and was recrystallized from acetone. The structure consists of octahedral all‐trans [SnMePhCl2(dmpz)2] molecules, with the Sn atom coordinated to two C [Sn—C 2.127 (5) and 2.135 (4) Å], two Cl [Sn—Cl 2.5753 (8) Å] and two N atoms [Sn—N 2.357 (3) Å]. The dmpz ligands, bound to the metal through their unprotonated N atoms, form weak intra‐ and intermolecular hydrogen bonds with the Cl ligands via their NH groups, giving rise to a polymeric chain along the c axis. 相似文献
11.
Guo‐Hai Xu Jian‐Fang Ma Ying‐Ying Liu Shun‐Li Li 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m581-m583
The title compound, [CrSn(C6H5)3(C7H6NO2)3Cl][Sn(C6H5)3Cl(CH4O)], was obtained from the reaction of Ph3SnCl with the complex [Cr(C7H6NO2)3] in methanol. The structure contains [Ph3SnCl(MeOH)] (A) and [Ph3SnClCr(C7H6NO2)3] (B) molecules. In molecule A, the Sn atom of Ph3SnCl is coordinated by one methanol molecule. In molecule B, the Sn atom of Ph3SnCl is coordinated by one carboxylate O atom of [Cr(C7H6NO2)3]. Molecules A and B are connected through an O—H⋯O hydrogen bond between a carboxylate O atom and the methanol OH group. Weak C—H⋯Cl interactions and O—H⋯O hydrogen bonds extend the components of (I) into a two‐dimensional network. 相似文献
12.
Shu‐Mei Chen Can‐Zhong Lu Ya‐Qin Yu Quan‐Zheng Zhang Xiang He 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(11):m549-m550
The title compound, [NaLaMo8O26(C3H7NO)7]n, contains infinite chains of [Mo8O26]4− units supporting dimethylformamide‐coordinated LaIII cations and linked by Na+ cations. The lanthanum center adopts a nine‐coordinate geometry and the Na atom is sandwiched between two β‐[Mo8O26]4− units. 相似文献
13.
Cassandra J. Martin David C. R. Hockless Max R. Taylor Lisandra L. Martin 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(12):e549-e549
The previously unknown title compound, tetra‐μ‐acetato‐1:2κ2O;1:2κ2O:O′;2:3κ2O;2:3κ2O:O′‐diaqua‐1κO,3κO‐bis(μ‐2‐{[N‐ethyl‐N‐(2‐hydroxy‐5‐methylbenzyl)amino]methyl}‐1‐methyl‐1H‐benzimidazole)‐1κ3N3,N,O:2κO;3κ3N3,N,O:2κO‐trinickel(II) tetrahydrate, [Ni3(C18H22N3O)2(C2H3O2)4(H2O)2]·4H2O, (I), is a centrosymmetric linear trinuclear nickel(II) complex, where the Ni atoms are in an octahedral coordination and the ligand heteroatoms act so as to model amino acid residues. 相似文献
14.
Stuart R. Dubberley Ben R. Tyrrell Philip Mountford 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(8):902-904
The title compound, [V(C2H6N)4], (I), has non‐crystallographic D2d molecular symmetry and contains an approximately tetrahedrally coordinated V atom with dimethylamido ligands. Each N atom features a nearly trigonal planar geometry. There are two independent molecules of (I) in the asymmetric unit. The results are compared with those previously reported for gas‐phase electron‐diffraction studies [Haaland, Rypdal, Volden & Andersen (1992). J. Chem. Soc. DaltonTrans. pp. 891–895]. 相似文献
15.
M. Yogavel P. G. Aravindan D. Velmurugan K. Sekar S. Selvi P. T. Perumal S. Shanmuga Sundara Raj H.‐K. Fun 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):o394-o396
In the title compounds, C13H15N3O, (I), and C13H15N3O2, (II), the dihedral angles between the planes of the phenyl ring and the amide group are 4.1 (1) and 20.7 (1)°, respectively. The molecules adopt a fully extended conformation, aided by intramolecular interactions. The molecular structures of (I) and (II) display different crystal packing and hydrogen‐bonding networks. 相似文献
16.
M. Teresa Duarte A. Ferreira A. R. Dias M. M. Salema Joo Ferreira da Silva 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(2):m104-m106
The structure of the title compound, [Ti(C2H6N)2(C6H8N)Cl], displays a η5‐coordination mode for the pyrrolyl ring, confirmed by the values of the slip parameter [0.073 (9) Å] and the fold angle [4.6 (6)°]. This coordination is confirmed by NMR data, which point to the involvement of the complex in a fluxional process in solution above 285 K, passing through an intermediate involving simultaneously a metal–azaallyl and a metal–olefin bond. 相似文献
17.
Zhong‐Lu You 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(9):m406-m408
The title complex, [Cu(C11H14BrN2O)(NCS)]n, is an interesting thiocyanate‐bridged polynuclear copper(II) compound, which crystallizes with two independent molecules in the asymmetric unit. Each CuII atom is five‐coordinate in a square‐pyramidal configuration, with one O and two N atoms of one Schiff base ligand and one terminal N atom of a bridging thiocyanate ligand defining the basal plane, and one terminal S atom of another bridging thiocyanate ligand occupying the apical position. The {4‐bromo‐2‐[2‐(dimethylamino)ethyliminomethyl]phenolato}copper(II) units are linked by the bridging thiocyanate ligands, forming polymeric chains running along the a axis. There are weak intermolecular C—H⋯O and C—H⋯S hydrogen bonds between the chains in the crystal structure. 相似文献
18.
Roberto Centore Angela Tuzi Dario Liguori 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):m241-m242
The structure of the salt of the di‐μ‐chloro‐bis[tetrachlorozirconate(IV)] anion and the N,N′‐isopropyl‐N‐(trimethylsilyl)benzamidinium cation, (C16H29N2Si)2[Zr2Cl10]·2CH2Cl2, is reported. The anion lies about an inversion centre and shows a substantially octahedral coordination around Zr, while the structure of the cation is unequivocally assigned as that of a benzamidinium ion. 相似文献
19.
Xin‐Qiang Wang Wen‐Tao Yu Dong Xu Meng‐Kai Lu Duo‐Rong Yuan Jiu‐Rong Liu Guang‐Tian Lu 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(11):1305-1307
In the title complex, {[MnHg(SCN)4(H2O)2]·2C4H9NO}n, each Mn atom is octahedrally coordinated to four equatorial thiocyanate N atoms and two axial water O atoms. The Mn atom and two O atoms lie on a twofold axis. Two kinds of crystallographically independent Hg atoms (denoted Hg1 and Hg2) are tetrahedrally coordinated with four thiocyanate S atoms and each Hg atom lies on a axis. N,N‐Dimethylacetamide molecules are connected to coordinated water molecules through hydrogen bonds. Each pair of Mn and Hg atoms is bridged via one thiocyanate ion. An Mn2Hg1Hg2(SCN)4 16‐membered ring is formed as a unit and the four metal atoms are in a chair‐form tetrahedral arrangement. The units are linked with one another and form infinite two‐dimensional networks. 相似文献
20.
Bernardo Masci Pierre Thury 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(11):m584-m586
In the title compound, [UO2(C13H10O2)(C11H19N3)]·C3H6O, the U atom is in a pentagonal–bipyramidal environment, with the three N atoms of the 2,6‐bis[(dimethylamino)methyl]pyridine ligand and the two O atoms of the dianionic 2,2′‐methylenediphenolate ligand in the equatorial plane. The geometry is compared with that of previously reported 1:2 uranyl–diphenoxide complexes. 相似文献