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1.
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
2.
Azizolla Beheshti William Clegg Sophie H. Dale Reza Hyvadi 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(9):m331-m332
The title complex, (C24H20P)2[WZnS4(S6)]·C3H6O or (Ph4P)2[WS2(μ‐S)2{Zn(S6)}]·Me2CO, was unexpectedly obtained on attempted recrystallization of a mixed tungten–zinc complex of a tris(pyrazolato)borate ligand. The two metal centres of the anion have distorted tetrahedral coordination and the two tetrahedra share one S...S edge; tungsten is additionally coordinated by two terminal sulfide ligands and zinc by a chelating S62− ligand, which has one central S—S bond significantly longer than the other four, a pattern found to be consistent for this ligand. This is the first reported example of a tetrahedral zinc centre bridging an edge of a single tetrathiotungstate(VI) or tetrathiomolybdate(VI) anion, although there are many previous examples with other metals. 相似文献
3.
Azizolla Beheshti William Clegg Sophie H. Dale Reza Hyvadi 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(8):m314-m316
The title complex, [Zn(C15H22BN6)(C2H3O2)] or (TpMe,Me)Zn(OAc), contains a tripodal tris(pyrazolyl)hydroborate ligand, a monodentate acetate ligand and a ZnII centre in a distorted tetrahedral coordination environment capped on one triangular face by a secondary Zn...O interaction with the second O atom of the acetate ligand. The four‐coordination of ZnII and the essentially monodentate character of the acetate ligand are due to the high steric demands of the ligand set, which prevent chelate formation and five‐coordination and lead to relatively long Zn—O and Zn—N bonds compared with related complexes of ZnII and other metals. 相似文献
4.
Feng‐Ju Yang Xin Fang Hai‐Yang Yu Jun‐Dong Wang 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(11):m375-m377
The title compound, [Zn(C32H16N8)(C5H6N2)]·2C4H8O, consists of one (phthalocyaninato)zinc (ZnPc) unit, a coordinated 4‐aminopyridine (4‐ap) molecule and two tetrahydrofuran (THF) solvent molecules. The central Zn atom is (4+1)‐coordinated by four isoindole N atoms of the Pc core and by the pyridine N atom of 4‐aminopyridine. The Zn atom is displaced by 0.4464 (8) Å from the isoindole N4 plane towards the pyridine N atom. The crystal structure is stabilized by intermolecular amine–phthalocyaninate N—H...N hydrogen bonds and π–π interactions between the aggregated Pc rings, which form molecular layers, and by weak van der Waals interactions between the layers. As well as hindering the aggregation of ZnPc molecules by occupying an axial position, the amino group will add new interactions which will favor applications of ZnPc, for example, as a sensitizer of photodynamic therapy. 相似文献
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Miaoli Zhu Liping Lu Xianglin Jin Pin Yang 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(3):m158-m159
The title compound, [ZnCl3(C4H12N5)], was prepared from aqueous solution and its structure determined. The coordination geometry around the Zn atom is a tetrahedron, with the central Zn atom bound to three Cl atoms and to one N atom of the biguanide ligand. The dihedral angle between the two guanidine groups is 67.86 (1)°. 相似文献
8.
Miguel Angel Harvey Sergio Baggio Juan Carlos Muoz Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):m283-m285
The structure of [Zn(C19H12N5)2], which is monomeric and consists of neutral Zn(bbip‐H)2 entities [bbip‐H is the anionic form of bis(benzimidazolyl)pyridine, formed by the loss of one H atom], has been solved from a racemic twin. The Zn atom lies at a site with imposed 222 symmetry and the bbip‐H ligand has imposed twofold symmetry. The imidazolyl H atom is disordered over two symmetry‐related positions, thus raising the molecular symmetry as required by the space group. The angle between the planes of the two coordinated bbip‐H ligands is 84.6 (3)°, so defining a distorted octahedral environment around the metal atom. 相似文献
9.
Kevin A. Kreisel Glenn P. A. Yap Klaus H. Theopold 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m569-m570
The title compound, [CrZn2(CH3)2Cl4(C4H8O)4], contains a central distorted octahedral Cr atom, located at an inversion center, bound to two tetrahydrofuran ligands and four chloro ligands that bridge to two symmetry‐related tetrahedral Zn atoms. The coordination around zinc is completed by methyl and tetrahydrofuran ligands. This structure is compared with a previously reported complex of vanadium, and their differences in metric parameters are explained. 相似文献
10.
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
11.
The title compound, [ZnCl2(C5H9NO2)2], crystallizes in the centrosymmetric space group C2/c with the Zn atom on a twofold axis. The two proline residues in any one complex thus have the same absolute configuration. Hydrogen bonding links the molecules into linear chains, which run in the crystallographic b direction. The proline residues within any one chain also have an identical absolute configuration. 相似文献
12.
Geng‐Geng Luo Di Sun Na Zhang Rong‐Bin Huang Lan‐Sun Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(10):m377-m381
2‐Aminopyrimidine (L1) and 2‐amino‐4,6‐dimethylpyrimidine (L2) have been used to create the two novel title complexes, [Ag2(NCS)2(C4H5N3)]n, (I), and [Ag(NCS)(C6H9N3)]n, (II). The structures of complexes (I) and (II) are mainly directed by the steric properties of the ligands. In (I), the L1 ligand is bisected by a twofold rotation axis running through the amine N atom and opposite C atoms of the pyrimidine ring. The thiocyanate anion adopts the rare μ3‐κ3S coordination mode to link three tetrahedrally coordinated AgI ions into a two‐dimensional honeycomb‐like 63 net. The L1 ligands further extend the two‐dimensional sheet to form a three‐dimensional framework by bridging AgI ions in adjacent layers. In (II), with three formula units in the asymmetric unit, the L2 ligand bonds to a single AgI ion in a monodentate fashion, while the thiocyanate anions adopt a μ3‐κ1N,κ2S coordination mode to link the AgL2 subunits to form two‐dimensional sheets. These layers are linked by N—H...N hydrogen bonds between the noncoordinated amino H atoms and both thiocyanate and pyrimidine N atoms. 相似文献
13.
Dubravka Matkovi‐alogovi Draginja Mrvo‐Sermek Zora Popovi
eljka Soldin 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):m44-m46
The title compound, [Hg(C4H4N2S)(C4H3N2S)]2[HgBr4], consists of [Hg(pymt)(pymtH)]+ complex cations (pymtH is pyrimidine‐2‐thione) lying across twofold rotation axes in space group Fddd, with linearly coordinated mercury at an Hg—S distance of 2.357 (3) Å, and [HgBr4]2− anions lying at sites of 222 symmetry. The Hg atom is additionally coordinated by two N and two Br atoms, forming a 2+4 effective coordination sphere. The protonated ligand is connected via N—H⋯N hydrogen bonds to the neighbouring unprotonated ligand, thus forming infinite chains of cations. 相似文献
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Li Song Chun Ling Xinping Wang 《Acta Crystallographica. Section C, Structural Chemistry》2011,67(12):m384-m386
The title racemic heterometallic dinuclear compound, [MnSn(C2H2O2S)3(H2O)5], (I), contains one main group SnIV metal centre and one transition metal MnII centre, and, by design, links the MnII centre to the building unit of the (Δ/Λ) [SnL3]2− complex anion (L is the 2‐sulfidoacetate dianion). In this cluster, the SnIV centre of the (Δ/Λ) [SnL3]2− unit is coordinated by three O atoms and three S atoms from three L ligands to form an [SnO3S3] octahedral coordination environment. The MnII centre is in an [MnO6] octahedral coordination environment, with five O atoms from five water molecules and the sixth from the μ2‐L ligand of the (Δ/Λ) [SnL3]2− unit. Between adjacent dinuclear molecules, there are many hydrogen‐bond interactions of O—H...O, O—H...S, C—H...O and C—H...S types. Of these, eight pairs of O—H...O hydrogen bonds fuse all the dinuclear molecules into two‐dimensional supramolecular sheets along the bc plane. Adjacent supramolecular sheets are further connected through O—H...S hydrogen bonds to give a three‐dimensional supramolecular network. 相似文献
16.
Onur ahin Orhan Büyükgüngr Dursun Ali Kse Hacali Necefoglu 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(11):m510-m512
The title compound, [Cu(C7H5O3)2(C6H6N2O)2(H2O)2], is a two‐dimensional hydrogen‐bonded supramolecular complex. The CuII ion resides on a centre of symmetry and is in an octahedral coordination environment comprising two pyridine N atoms, two carboxylate O atoms and two O atoms from water molecules. Intermolecular N—H...O and O—H...O hydrogen bonds produce R22(4), R22(8) and R22(15) rings which lead to one‐dimensional polymeric chains. An extensive two‐dimensional network of N—H...O and O—H...O hydrogen bonds and C—H...π interactions are responsible for crystal stabilization. 相似文献
17.
Thidarat Chotkhun Sujittra Youngme Narongsak Chaichit 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):m59-m61
In the title dinuclear acetate‐bridged complex, [Cu2(C2H3O2)3(NCS)(C10H9N3)2], the two Cu atoms are five‐coordinated, with a basal plane consisting of two N atoms of a di‐2‐pyridylamine (dpyam) ligand and two O atoms of two different acetate ligands. The axial positions of these Cu atoms are coordinated to N and O atoms from thiocyanate and acetate molecules, respectively, leading to a distorted square‐pyramidal geometry with τ values of 0.30 and 0.22. Both CuII ions are linked by an acetate group in the equatorial–equatorial positions and have syn–anti bridging configurations. Hydrogen‐bond interactions between the amine H atom and the coordinated and uncoordinated O atoms of the acetate anions generate an infinite one‐dimensional chain. 相似文献
18.
(2,9‐Dimethyl‐1,10‐phenanthroline‐κ2N,N′)(pyridine‐2,6‐dicarboxylato‐κ3O2,N,O6)copper(II) trihydrate
Ibrahim Uar Ahmet Bulut Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):m479-m481
The copper(II) centre in the mononuclear title complex, [Cu(C7H3NO4)(C14H12N2)]·3H2O, is surrounded by one bidentate 2,9‐dimethyl‐1,10‐phenanthroline (dmphen) ligand and one tridentate pyridine‐2,6‐dicarboxylate ligand, and exhibits a distorted square‐pyramidal geometry. The crystal packing involves both hydrogen‐bonding and π–π interactions. The solvent water molecules link monomers to one another through hydrogen‐bonding interactions, forming ladder‐like chains in the bc plane. Face‐to‐face and slipped π–π interactions also occur between dmphen rings of neighboring molecules and are responsible for interchain packing. 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.
Christian Hansson ke Oskarsson 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(1):m61-m63
The title compound, cis‐[Pt(CH3COO)2(C2H6S)2], crystallizes in the P21/c space group with a pseudo‐square‐planar coordination geometry. The complex forms centrosymmetric dimeric packing units, with C—H...O—Pt interactions and a short Pt...Pt distance [3.5868 (2) Å]. The coordination mode of the acetate ligands is monodentate and they are oriented almost perpendicular to the coordination plane. Cambridge Structural Database [Allen (2002). Acta Cryst. B 58 , 380–388] data show a preferred staggered conformation with respect to the coordination plane for Me2S in complexes with PtII. 相似文献