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1.  Dichlorido(3-phenyl­indenyl­idene)bis­(triphenyl­phosphane)ruthenium(II) tetra­hydro­furan disolvate 
The RuII atom in the title compound, [RuCl2(C15H10)(C18H15P)2]·2C4H8O, has a distorted square-pyramidal conformation. The P and Cl atoms are at the base of the pyramid and the Ru—Cindenyl­idene bond is in the axial position. The two Cl ligands and the two phosphane ligands are in trans positions. The Cl—Ru—Cl and P—Ru—P angles are 157.71 (2) and 166.83 (2)°, respectively. The two independent tetra­hydro­furan (THF) solvent mol­ecules are disordered. One THF mol­ecule was refined using a split-atom model. The second THF mol­ecule was accounted for by using program PLATON/SQUEEZE [Spek (2009 ▶). Acta Cryst. D65, 148–155]. The molecular conformation shows three intramolecular C—H⋯Cl contacts and two C—H⋯π interactions while the crystal packing features an intermolecular C—H⋯Cl contact and two very weak intermolecular C—H⋯π contacts.
doi:10.1107/S1600536811016692
PMCID: PMC3120390  PMID: 21754621
2.  Chlorido[3,3′-dibutyl-5,5′-(pyridine-2,6-di­yl)dipyrazol-1-ido]gold(III) 
The Au atom in the C2-symmetric pincer-type title complex, [AuCl(C19H23N5)], is in the +3 oxidation state. The ligand is composed of one pyridine unit and two n-butyl-substituted pyrazoles (pyrz). Both pyrazoles are deprotonated, thus forming a neutral compound. To the best of our knowledge, this is the first AuIII–bis­pyrazolate complex. According to the special geometry in the N,N′,N′′-tridentate ligand, containing two five-membered heterocycles, the complex deviates from an ideal square-planar coordination geometry; the Npyrz—Au—Npyrz angle is 160.8 (3)°, indicating a distortion of nearly 20°.
doi:10.1107/S1600536809050995
PMCID: PMC2980159  PMID: 21579959
3.  Bis[5-(4-methoxy­benz­yl)furan-3-yl]methanone 
The title compound, C25H22O5, was obtained by a dehydrogenative carbonyl­ation reaction. It crystallizes with one half-mol­ecule in the asymmetric unit. The mol­ecules have crystallographic C 2 symmetry and the two atoms of the carbonyl group are located on the rotation axis. The meth­oxy groups are coplanar with the benzene ring to which they are attached [C—C—O—C = 1.0 (6)°]. The two furan rings are inclined at 17.3 (3)° with respect to each other and the dihedral angle between the furan ring and the benzene ring is 75.83 (12)°. The crystal structure is stabilized by C—H⋯O hydrogen bonds.
doi:10.1107/S1600536809034333
PMCID: PMC2970307  PMID: 21577796
4.  2-{2-[3-(1H-Benzimidazol-2-yl)quinolin-2-yl­oxy]eth­oxy}ethanol 
In the title compound, C20H19N3O3, the inter­planar angle between the benzimidazole unit and the quinoline unit is 25.1 (2)°. Two different hydrogen bonds involving the hydr­oxy group and the imidazole unit are present. An intra­molecular N—H⋯O hydrogen bond links the hydr­oxy group of the side chain with the imidazole unit, forming a 12-membered ring, and an inter­molecular O—H⋯N hydrogen bond links the mol­ecules, forming chains in the crystallographic b direction.
doi:10.1107/S1600536809002797
PMCID: PMC2968172  PMID: 21581994
5.  3-(1H-Benzimidazol-2-yl)-2-chloro-8-methyl­quinoline 
Two independent mol­ecules of the title compound, C17H12ClN3, are present in the structure. The angle between the planes defined by the atoms of the benzimidazole unit and the quinoline unit are 45.2 (3) and 44.0 (3)°, indicating an essentially identical conformation for both mol­ecules. Each of the independent mol­ecules is linked with a symmetry equivalent by an inter­molecular N—H⋯N hydrogen bond involving the two benzimidazole N atoms, to form chains in the crystallographic c direction.
doi:10.1107/S1600536809002827
PMCID: PMC2968319  PMID: 21581993
6.  (R p)-1-{(R)-(Dimethyl­amino)[2-(diphenyl­phosphan­yl)phen­yl]methyl}-2-(diphenyl­phosphan­yl)ferrocene chloro­form solvate 
The absolute configuration of the title mol­ecule, [Fe(C5H5)(C38H34NP2)]·CHCl3, is R,R p. The mol­ecular structure is similar to the structure of the solvent-free compound [Fukuzawa, Yamamoto & Kikuchi (2007 ▶). J. Org. Chem. 72, 1514–1517], but some torsion angles about the P—Cphen­yl bonds differ by up to 25°. The P atoms and the N atom have a distorted trigonal-pyramidal geometry. The chloro­form solvate group donates a C—H⋯π bond to the central benzene ring and is also involved in six inter­molecular C—H⋯Cl contacts with H⋯Cl distances between 2.96 and 3.13 Å.
doi:10.1107/S160053680803955X
PMCID: PMC2959829  PMID: 21581228
7.  (Sp)-1-Diphenyl­phosphanyl-2-{(S)-[2-(diphenyl­phosphan­yl)phen­yl]hydroxy­meth­yl}ferrocene 
The absolute configuration of the title compound, [Fe(C5H5)(C36H29OP2)], is Sp at the ferrocene group and S at the asymmetric C atom. Both P atoms have a trigonal–pyramidal conformation. There is a short intra­molecular C—H⋯P contact with an H⋯P distance of 2.56 Å. The hydr­oxy group is involved in an intra­molecular O—H⋯πphen­yl inter­action. The crystal packing shows five very weak inter­molecular C—H⋯π contacts, with H⋯Cg distances between 3.26 and 3.39 Å (Cg is the centroid of a phenyl or cyclo­penta­dienyl ring).
doi:10.1107/S1600536808038294
PMCID: PMC2959966  PMID: 21581185
8.  A new polymorph of N-(prop-2-yn­yl)tricyclo­[3.3.1.13,7]decane-1-carbox­amide 
The alkynyl bond of the title compound, C14H19NO, has a length of 1.170 (5) Å. The amide function shows a trans conformation with respect to the carbonyl group characterized by the torsion angle O—C—N—H of −176 (2)°. There is an inter­molecular N—H⋯O hydrogen bond between the amide function and the carbonyl group. In addition, weak inter­molecular hydrogen bonds stabilize the crystal structure. A comparison with a polymorphic structure shows conformational differences with regard to the orientation of the carbonyl groups with respect to the adamantyl group [O—C—C—C = 96.2 (3)° in the title compound and 123.7 (2)° in the polymorph] and the orientations of the propargyl groups in relation to the carbonyl groups [O—C—C—C = −87.7 (3) and −58.7 (2)°, respectively].
doi:10.1107/S1600536808021466
PMCID: PMC2962125  PMID: 21203207

Results 1-8 (8)