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The binuclear title compound, [Au2Fe(C9H10NOS)2(C17H14P)2]·CH2Cl2, which has the Fe atom located on a crystallographic centre of inversion, crystallizes as a 1:1 dichloro­methane solvate, which is disordered about a centre of inversion. There is a small deviation from linearity defined by the SP donor set [S1—Au—P1 angle is 175.35 (5) °] which is due to an intra­molecular Au...O contact [3.080 (5) Å]. The primary inter­molecular contacts between binuclear mol­ecules are of the type C—H...π, and are arranged so as to form columns in the a-axis direction in which the disordered solvent mol­ecules reside.

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The AuI atom in the title compound, [Au(C6H12NOS)(C18H33P)], is coordinated within a S,P-donor set that defines a slightly distorted linear geometry [S—Au—P angle = 173.44 (5)°], with the distortion due in part to a close intra­molecular Au...O contact [3.023 (4) Å]. The N-bound isopropyl group is disordered over two orientations in a 0.618 (15):0.382 (15) ratio.

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Each gold atom in the binuclear title compound, [Au2(C9H9N2O3S)2(C25H22P2)], is coordinated within an S,P-donor set that defines a slightly distorted linear geometry [S—Au—P angles = 172.77 (6) and 173.84 (6)°], with the distortion due in part to a close intra­molecular Au...O contact [2.968 (11) and 2.963 (4) Å]. The mol­ecule adopts a U-shaped conformation allowing for the formation of an aurophilic Au...Au inter­action [3.2320 (5) Å]. Mol­ecules are consolidated in the crystal structure by C—H...π inter­actions. Disorder was noted for one of the eth­oxy groups with two orientations being resolved in a 0.679 (16):0.321 (16) ratio.

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The Au atom in the title compound, [Au(C8H7ClNOS)(C18H15P)], exists within a slightly distorted linear geometry defined by an S,P-donor set [S—Au—P angle = 174.61 (4)°], with the distortion related to a short intra­molecular Au...O contact [2.988 (3) Å]. In the crystal structure, mol­ecules are arranged into supra­molecular chains along the b axis by C—H...π inter­actions.

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The AuI atom in the title compound, [Au(C9H9ClNOS)(C18H15P)]·0.5CH2Cl2, exists within a slightly distorted linear geometry defined by an S,P donor set [S—Au—P angle = 178.01 (4)°]; a close intra­molecular Au...O contact [2.964 (4) Å] also occurs. In the crystal structure, mol­ecules are linked into supra­molecular chains propagating along [010] by C—H...N, C—H...S and C—H...π inter­actions. The solvent mol­ecule is disordered about a twofold rotation axis.

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In the title 2:1 adduct, [Sn2W2(C10H13NO2)2(CO)10]2[W(CO)6], the complete hexa­carbonyl­tungsten mol­ecule is generated by a crystallographic inversion centre. The heterometallic mol­ecule features a central Sn2O2 core with essentially equal Sn—Oeth­oxy bond lengths. The second eth­oxy O and amine N atoms of each N,O,O′-tridentate ligand coordinate to one Sn atom only. The NO3 donor atoms occupy basal positions and the W atom the apical position in a distorted square-pyramidal geometry for each Sn atom. The W atoms are approximately syn to each other but the central metal core is non-planar [W—Sn...Sn—W pseudo-torsion angle = 43.573 (16)°]. One of the carbonyl ligands in the heterometallic mol­ecule is disordered over two orientations with equal occupancies. In the crystal, the heterometallic mol­ecules associate via C—H...O inter­actions, forming supra­molecular layers with undulating topology in the ab plane. These stack along the c axis, defining voids which are occupied by the W(CO)6 mol­ecules.

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The structure analysis of the title compound, C14H16O2S2, shows the SMe and H atoms of the bond linking the six-membered rings to be syn and also to be syn to the bridgehead –CH2– group. Each of the five-membered rings adopts an envelope conformation at the bridgehead –CH2– group. The dione-substituted ring adopts a folded conformation about the 1,4-C...C vector, with the ketone groups lying to one side. The cyclo­hexene ring adopts a boat conformation.

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In the title compound, C21H16Br2N2, the central pyrazole ring adopts an flattened envelope conformation, with the stereogenic C atom in the flap position. The deviations from planarity for this ring are relatively minor (r.m.s. deviation = 0.045 Å) and the dihedral angles formed with the N- and Cimine-bound benzene rings are 7.73 (13) and 11.00 (13)°, respectively. By contrast, the benzene ring bound at the chiral C atom is almost orthogonal to the rest of the mol­ecule; the dihedral angle formed between this ring and the pyrazole ring is 79.53 (13)°. In the crystal, the packing is stabilized by C—H...N and C—H...Br inter­actions.

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In the title compound, C13H18N2O5S, the benzene ring and the acetamide group are almost coplanar [dihedral angle = 5.6 (3)°], and the amine group projects almost vertically from this plane [C—C—S—N = −84.5 (7)°]. A short intra­molecular C—H...O contact occurs. In the crystal, O—H...O, N—H...O and N—H...(O,O) hydrogen bonds lead to a three-dimensional network. One of the methyl groups of the isopropyl residue is disordered over two orientations in a 0.747 (16):0.253 (16) ratio.

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In the structure of the title compound, C27H39N3O3, each of the (4-oxopiperidin-1-yl)methyl residues adopts a flattened chair conformation (with the N and carbonyl groups being oriented to either side of the central C4 plane) and they occupy positions approximately orthogonal to the central benzene ring [Cbenzene—C—Cmethyl­ene—N torsion angles 103.4 (2), −104.4 (3) and 71.9 (3)°]; further, two of these residues are oriented to one side of the central benzene ring with the third to the other side. In the crystal packing, supra­molecular layers in the ab plane are sustained by C—H...O inter­actions.

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The bicyclo­[3.3.1]nonane ring in the title compound, C39H44N2O, adopts a chair–boat conformation with the four benzene rings being directed away from the carbonyl group. The presence of C—H...O contacts leads to helical supra­molecular chains along the b axis.

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The asymmetric unit of the title compound {systematic name: (3S,8S,9S,10R,13R,14S,17R)-17-[(E,2R,5S)-5-ethyl-6-methyl­hept-3-en-2-yl]-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodeca­hydro-1H-cyclo­penta­[a]phenanthren-3-yl p-toluene­sulfonate}, C36H54O3S, comprises two independent mol­ecules that differ significantly in terms of the relative orientations of the peripheral groups; the conformation about the C=C bond of the side chain is E. In the crystal, mol­ecules associate into linear supra­molecular chains aligned along the a axis via C—H...O inter­actions.

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The title compound, C9H8Br2N2O3, is planar (r.m.s. deviation = 0.030 Å) with the exception of the terminal methyl group which lies out of the plane [1.219 (3) Å]. The conformation about the C=N double bond [1.268 (3) Å] is E. An intra­molecular N—H...N hydrogen bond occurs. Linear supra­molecular chains along the b axis mediated by O—H...O hydrogen-bonding inter­actions feature in the crystal structure. These chains are also stabilized by weak C—H...N contacts.

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In the title hydrated salt, C15H11Br2N2+·Cl·2H2O, the complete imidazolium cation is generated by a crystallographic twofold axis, with one C atom lying on the axis. The chloride ion and both water mol­ecules of crystallization also lie on a crystallographic twofold axis of symmetry. The cation is non-planar, the dihedral angle formed between the central imidazolium and benzene rings being 12.9 (3)°; the dihedral angle between the symmetry-related benzene rings is 25.60 (13)°. In the crystal, O—H...Cl hydrogen bonds result in supra­molecular chains along c mediated by eight-membered {...HOH...Cl}2 synthons. These are consolidated by C—H...O and π–π [centroid–centroid distance = 3.687 (3) Å] inter­actions.

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The title mol­ecule, C12H11N3O4, is essentially planar, the r.m.s. deviation for all non-H atoms being 0.068 Å. An intra­molecular C—H...N hydrogen bond occurs. The crystal packing is dominated by π–π inter­actions [shortest centroid–centroid distance = 3.6312 (16) Å], which lead to supra­molecular chains that are linked into a three-dimensional network via C—H...O contacts. The crystal was found to be a non-merohedral twin (twin law −1 0 0/0 −1 0/ 0.784 0 1), the fractional contribution of the minor component being approx­imately 22%.
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