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1.  2-(2-Hy­droxy-2-phenyleth­yl)-1-methyl­cyclo­propan-1-ol 
The asymmetric unit of the title compound, C12H16O2, contains two independent mol­ecules in which the dihedral angles between the benzene and cyclo­propane rings are 75.9 (3) and 76.3 (3)°. In the crystal, the mol­ecules are connected by O—H⋯O hydrogen bonds into a three dimensional supra­molecular structure.
PMCID: PMC3569251  PMID: 23424474
2.  3-[(E)-2-Chloro-3,3,3-trifluoro­prop-1-en-1-yl]-N-(2-fluoro­phen­yl)-2,2-dimethyl­cyclo­propane-1-carboxamide 
The phenyl ring in the title compound, C15H14ClF4NO, makes a dihedral angle of 80.3 (3)° with the cyclo­propane ring. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds into chains running along the a axis.
PMCID: PMC3050188  PMID: 21522771
3.  Ethyl 1-[(4-acetyl-2-methoxy­phen­oxy)meth­yl]cyclo­propane-1-carboxyl­ate 
In the title compound, C16H20O5, the dihedral angle between the planar rings, viz. benzene and cyclo­propane, is 52.1 (2)°. Mol­ecules are connected in the crystal via weak inter­molecular C—H⋯O hydrogen bonds, forming chains in the [001] direction.
PMCID: PMC2968388  PMID: 21581914
4.  4-(Cyclo­propane­carboxamido)­benzoic acid 
In the title compound, C11H11NO3, the dihedral angle between the benzene ring and the cyclo­propane ring is 63.2 (1)°. In the crystal, mol­ecules are linked through classical cyclic carb­oxy­lic acid O—H⋯O hydrogen-bond inter­actions [graph set R 2 2(8)] giving centrosymmetric dimers which are extended along the b-axis direction through amide N—H⋯O hydrogen-bond inter­actions, giving one-dimensional ribbon structures. Weak C—H⋯O inter­actions are also present in the structure.
PMCID: PMC3470383  PMID: 23125796
5.  3-(2-Chloro-3,3,3-trifluoro­prop-1-en-1-yl)-2,2-dimethyl-N-[3-(trifluoro­meth­yl)phen­yl]cyclo­propane­carboxamide 
In the title mol­ecule, C16H14ClF6NO, the cyclo­propane ring forms a dihedral angle of 70.82 (18)° with the benzene ring. The torsion angles about the ethyl­ene and amide bonds are −2.2 (5) (Cl—C—C—C) and 0.8 (5)° (O—C—N—C). A supra­molecular chain propagated by glide symmetry along [001] and mediated by N—H⋯O hydrogen bonds is observed in the crystal packing.
PMCID: PMC3379330  PMID: 22719528
6.  (E)-3-(2-Chloro-3,3,3-trifluoro­prop-1-en­yl)-2,2-dimethyl-N-p-tolyl­cyclo­propane­carboxamide 
There are two mol­ecules in the asymmetric unit of the title compound, C16H17ClF3NO. The benzene ring in each mol­ecule makes a dihedral angle of 66.6 (3)° [116.3 (4)° in the second mol­ecule] with the plane of the cyclo­propane ring. The F atoms of the CF3 groups are disordered equally over two positions. The amide hydrogen is linked with the amide oxygen in another mol­ecule by an inter­molecular N—H⋯O hydrogen bond. The packing can be described as a dimeric arrangement of mol­ecules linked through N—H⋯O hydrogen bonds.
PMCID: PMC2960375  PMID: 21201478
7.  Spiro­[cyclo­propane-1,3′-indolin]-2′-one 
In the title mol­ecule, C10H9NO, the dihedral angle between the mean plane of the cyclo­propane ring and the essentially planar [maximum deviation = 0.032 (2) Å] indole ring system is 87.65 (17)°. In the crystal, inter­molecular N—H⋯O hydrogen bonds link mol­ecules into one-dimensional chains along [100].
PMCID: PMC3200736  PMID: 22064750
8.  5-(4-Chloro­phen­yl)-1-cyclo­propyl-2-(2-fluoro­phen­yl)-3-phenyl­pentane-1,5-dione 
In the title compound, C26H22ClFO2, the cyclo­propane ring makes dihedral angles of 45.7 (2), 49.0 (2) and 65.2 (2)° with the fluoro-substituted phenyl ring, the benzene ring and the chloro-substituted phenyl ring, respectively. The F and Cl atoms deviate by 0.0307 (11) and 0.0652 (6) Å, respectively, from the planes of the phenyl rings to which they are attached. In the crystal, mol­ecules are linked by C—H⋯F hydrogen bonds, forming chains along the b axis.
PMCID: PMC3569784  PMID: 23424530
9.  Bioresmethrin: (5-benzyl­furan-3-yl)methyl 2,2-dimethyl-3-(2-methyl­prop-1-en-1-yl)cyclo­propane-1-carboxyl­ate 
In the title compound, C22H26O3, the dihedral angle between the cyclo­propane ring and the plane of the vinyl group is 88.2 (2)°. The dihedral angle between the phenyl and furan rings is 86.09 (8)°. In the crystal, weak inter­molecular C—H⋯π contacts together with very weak C—H⋯O hydrogen bonds stack the mol­ecules along the a axis.
PMCID: PMC3515168  PMID: 23284395
10.  2-(2,3,4,9-Tetra­hydro-1H-carbazol-1-ylidene)propane­dinitrile 
In the title mol­ecule, C15H11N3, the dihedral angle between the benzene ring and the fused pyrrole ring is 1.07 (5)°. The cyclo­hexene ring adopts an envelope conformation: the dicyano­methyl­ene group at position 1 has a coplanar orientation. An intra­molecular N—H⋯N hydrogen bond generates an S(7) ring motif. Inter­molecular N—H⋯N hydrogen bonds form an R 2 2(14) ring in the crystal. A C—H⋯π inter­action involving the benzene ring is also found in the structure.
PMCID: PMC3006716  PMID: 21587930
11.  Propan-2-yl r-4-(4-fluoro­phen­yl)-3-hy­droxy-c-6-methyl-2-phenyl-4,5-dihydro-2H-indazole-t-5-carboxyl­ate 
In the title compound, C24H23FN2O3, the cyclo­hexene ring adopts a screw-boat conformation. The fluorobenzene ring attached to the cyclo­hexene ring and the phenyl ring attached to the indazole moiety are inclined to one another by 57.77 (13)°. In the crystal, mol­ecules are linked by O—H⋯N and C—H⋯O hydrogen bonds, forming chains with C(5) and C(10) graph-set motifs. There are also C—H⋯π inter­actions present. The isopropoxycarbonyl group undergoes considerable thermal motion.
PMCID: PMC3470376  PMID: 23125789
12.  3-[(E)-2-Chloro-3,3,3-trifluoro­prop-1-en-1-yl]-N-(2-chloro­phen­yl)-2,2-dimethyl­cyclo­propane-1-carboxamide 
In the title compound, C15H14Cl2F3NO, synthesized by the reaction of 3-[(E)-2-chloro-3,3,3-trifluoro­prop-1-en­yl]-2,2-dimethyl­cyclo­propane­carb­oxy­lic acid and 2-chloro­aniline, the aromatic ring makes a dihedral angle of 76.7 (3)° with the plane of the cyclo­propane ring. In the crystal, inter­molecular N—H⋯O hydrogen bonds link the mol­ecules into chains running along the b axis.
PMCID: PMC3050387  PMID: 21522772
13.  N-(4-Fluoro­phen­yl)-2,2-dimethyl­propan­amide 
The crystal packing in the title compound, C11H14FNO, features N—H⋯O hydrogen bonds, resulting in chains of mol­ecules running parallel to the c axis. The dihedral angle between the ring and the amide group is 39.1 (3)°.
PMCID: PMC3379342  PMID: 22719540
14.  (E)-2-(2-Chloro-3,3,3-trifluoro­prop-1-en­yl)-N-(2,4-dimethyl­phen­yl)-3,3-dimethyl­cyclo­propane-1-carboxamide 
The title compound, C17H19ClF3NO, crystallizes with three mol­ecules in the asymmetric unit. The aromatic ring makes dihedral angles of 38.69 (13), 46.68 (12) and 50.52 (11)° with the plane of the cyclo­propane ring in the three mol­ecules. The crystal packing is stabilized by inter­molecular N—H⋯O hydrogen bonds.
PMCID: PMC2969339  PMID: 21582781
15.  2-(Adamantan-1-yl)-1,3-bis­(4-methyl­phen­yl)propan-2-ol 
The conformation of the title compound, C27H34O, is stabilized by a weak intra­molecular C—H⋯π inter­action. The dihedral angle between the benzene rings is 54.79 (4)°. The adamantane cage consists of three fused cyclo­hexane rings in classical chair conformations, with C—C—C angles in the range 107.75 (10)–111.35 (9)°. Although the mol­ecule contains a hy­droxy group as a conceivable hydrogen-bond donor, this group is sterically hindered by bulky substituents and no hydrogen bonds are observed in the crystal structure.
PMCID: PMC3588353  PMID: 23476370
16.  (S)-1-Ferrocenyl-3-hy­droxy-3-phenyl­propan-1-one 
In the title compound, [Fe(C5H5)(C14H13O2)], the dihedral angle between the phenyl ring and the unsubstituted cyclo­petadienyl ring is 85.0 (2)°while that between the phenyl ring and the substituted cyclo­petadienyl ring is 83.6 (2)°. The dihedral angle between the two cyclo­penta-1,3-diene rings of the ferrocene unit is 2.2 (2)°. The mol­ecules are stabilized by inter­molecular O—H⋯O hydrogen-bonding inter­action within the crystal lattice.
PMCID: PMC3051583  PMID: 21522855
17.  1-Cyclo­propyl-2-(2-fluoro­phen­yl)-5-(4-fluoro­phen­yl)-3-phenyl­pentane-1,5-dione 
In the title compound, C26H22F2O2, the cyclo­propane ring makes dihedral angles of 47.6 (2), 51.3 (2) and 63.9 (2)° with the 2-fluoro-substituted phenyl ring, the unsubstituted phenyl ring and the 4-fluoro-substituted phenyl ring, respectively. There is a short C—H⋯F contact in the molecule. In the crystal, weak C—H⋯F hydrogen bonds lead to chains of mol­ecules extending along the b-axis direction.
PMCID: PMC3569750  PMID: 23424496
18.  4′-(4-Fluoro­phen­yl)-1′-methyl­dispiro­[indane-2,2′-pyrrolidine-3′,2′′-indane]-1,3,1′′-trione methanol hemisolvate 
The asymmetric unit of the title compound, C29H24FNO5·0.5CH3OH, contains two independent mol­ecules and a one methanol solvent mol­ecule. The methanol mol­ecule is O—H⋯O hydrogen bonded to one of the independent mol­ecules. The pyrrolidine rings in both mol­ecules adopt half-chair conformations, while the cyclo­pentane rings within the indane groups are in flattened envelope conformations, with the spiro C atoms forming the flaps. The benzene rings of the indane ring systems form a dihedral angle of 35.06 (7)° in one independent mol­ecule and 31.16 (8)° in the other. The fluoro-substituted benzene ring forms dihedral angles of 65.35 (6) and 85.87 (7)° with the indane group benzene rings in one mol­ecule, and 72.78 (8) and 77.27 (8)° in the other. In each mol­ecule, a weak intra­molecular C—H⋯O hydrogen bond forms an S(6) ring motif. In the crystal, weak C—H⋯O, C—H⋯N and C—H⋯F hydrogen bonds link the mol­ecules into a three-dimensional network.
PMCID: PMC3648276  PMID: 23723896
19.  3-[2-Cyclo­propyl-1-(2-fluoro­phen­yl)-2-oxoeth­yl]-5-(4-methyl­sulfanyl­benzyl­idene)-1,3-thia­zolidine-2,4-dione 
In the title compound, C22H18FNO3S2, the five-membered thia­zolidine ring is planar (r.m.s. deviation = 0.003 Å) and forms dihedral angles of 70.2 (3), 73.16 (17) and 10.32 (14)° with the cyclo­propane, fluoro­benzene and methyl­thio­benzene rings, respectively. The sum of the bond angles around the thia­zolidine ring N atom (359.6°) indicates sp 2 hybridization. The mol­ecular structure features intra­molecular C—H⋯S, C—H⋯F and C—H⋯O inter­actions. In the crystal, no significant inter­molecular contacts were apparent.
PMCID: PMC3569250  PMID: 23424473
20.  (E)-(2,4-Dichloro­benzyl­idene)amino cyclo­propane­carboxyl­ate 
In the title compound C11H9Cl2NO2, the dihedral angle between the benzene and cyclo­propane ring planes is 89.95 (13)°. The carbon­yl–oxime grouping is almost coplanar with the benzene ring [dihedral angle = 4.08 (6)°]. In the crystal, mol­ecules are linked by C—H⋯O inter­actions into [100] chains.
PMCID: PMC3379204  PMID: 22719402
21.  1-{[3-(2-Chloro-3,3,3-trifluoro­prop-1-en­yl)-2,2-dimethyl­cyclo­propan-1-yl]carbon­yl}-3-(methyl­sulfon­yl)imidazolidin-2-one 
In the title mol­ecule, C13H16ClF3N2O4S, the imidazolidine ring is approximately planar, the largest deviation from this plane being 0.025 (3) Å. The cyclo­propane ring forms a dihedral angle of 64.1 (2)° with the imidazolidine ring. In the crystal, C—H⋯O hydrogen bonds are observed.
PMCID: PMC3379331  PMID: 22719529
22.  1-Benzoyl-N-phenyl­cyclo­propane­carboxamide 
The title compound, C17H15NO2, was synthesized by reaction of 1,2-dibromo­ethane with 1-benzoyl-N-phenyl­cyclo­propane­carboxamide and K2CO3 in dimethyl­formamide. The mol­ecule exhibits a V-shaped conformation in the crystal with a dihedral angle of 88.7 (3)° between the two benzene rings. Pairs of N—H⋯O hydrogen bonds link the mol­ecules into dimers about centres of inversion.
PMCID: PMC2959514  PMID: 21581038
23.  9-(4-Fluoro­phen­yl)-3,3,6,6-tetra­methyl-10-p-tolyl-1,2,3,4,5,6,7,8,9,10-deca­hydroacridine-1,8-dione 
The title compound, C30H32FNO2, was synthesized by the reaction of dimedone with 4-fluoro­benzaldehyde and p-toluidine in water. The dihydro­pyridine and both of the cyclo­hexenone rings are not planar and have flattened boat conformations. The dihedral angle between the planar aromatic rings is 15.33 (3)°. In the crystal structure, inter­molecular C—H⋯O hydrogen bonds link the mol­ecules into centrosymmetric dimers.
PMCID: PMC2960545  PMID: 21201815
24.  {4,4′-Dimeth­oxy-2,2′-[2,2-dimethyl­propane-1,3-diylbis(nitrilo­methanylyl­idene)]diphenolato}copper(II) monohydrate 
The asymmetric unit of the title compound, [Cu(C21H24N2O4)]·H2O, comprises half of a Schiff base complex and a water mol­ecule. The CuII atom, water mol­ecule and one C atom of the central propyl­ene segment are located on a twofold rotation axis. The geometry around the CuII atom is distorted square-planar, supported by the N2O2 donor atoms of the coordinating ligand. The dihedral angle between the symmetry-related benzene rings is 42.56 (19)°. In the crystal, O—H⋯O hydrogen bonds involving the water mol­ecule make an R 2 1(6) ring motif. Complex mol­ecules are linked into a chain along the c axis via C—H⋯O inter­actions.
PMCID: PMC3470142  PMID: 23125586
25.  4-Chloro-2-[(E)-(4-fluoro­phen­yl)imino­meth­yl]phenol 
In the title Schiff base mol­ecule, C13H9ClFNO, the benzene rings are twisted slightly with respect to each other, making a dihedral angle of 7.92 (2)°. An intra­molecular O—H⋯N hydrogen bond occurs. In the crystal, an infinite chain is formed along the c-axis direction by π–π stacking inter­actions between the phenyl rings and the six-membered hydrogen-bonded ring of neighboring Schiff base ligands [centroid–centroid distances of 3.698 (2) and 3.660 (3) Å]. Neighboring chains are linked into a three-dimensional supra­molecular structure by C—H⋯O and C—H⋯F hydrogen bonds.
PMCID: PMC3914085  PMID: 24526988

Results 1-25 (445843)