scholarly journals (Cyanido-κC)(2,2-diphenylacetamido-κ2N,O)bis(η5-pentamethylcyclopentadienyl)zirconium(IV)

2014 ◽  
Vol 70 (2) ◽  
pp. m57-m57 ◽  
Author(s):  
Lisanne Becker ◽  
Anke Spannenberg ◽  
Perdita Arndt ◽  
Uwe Rosenthal
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Triple Bond ◽  
Centrosymmetric Dimers

In the title compound, [Zr(C10H15)2(C14H12NO)(CN)], the ZrIVatom is coordinated by two pentamethylcyclopentadienyl ligands, the amidate ligandviathe N and O atoms, and an additional C[triple-bond]N ligand. The four-membered metallacycle is nearly planar (r.m.s. deviation = 0.008 Å). In the crystal, the molecules are connected into centrosymmetric dimersviapairs of N—H...N hydrogen bonds.

scholarly journals 2,6-Bis(4-methoxybenzylidene)cyclohexanone

2006 ◽  
Vol 62 (5) ◽  
pp. o1910-o1912 ◽  
Author(s):  
Ray J. Butcher ◽  
H. S. Yathirajan ◽  
B. K. Sarojini ◽  
B. Narayana ◽  
J. Indira
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Photon Absorption ◽  
Intermolecular Hydrogen Bonds ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Compound C ◽  
Centrosymmetric Dimers

The title compound, C22H22O3, demonstrates a two-photon absorption. Its metrical parameters are similar to those of related cyclohexanone derivatives. In the crystal structure, two sets of centrosymmetric dimers formed by weak C—H...O intermolecular hydrogen bonds combine to form molecular tapes along [101].

Undecacarbonyl(pyridine-κN)-tetrahedro-tetrairidium(4Ir—Ir)

2006 ◽  
Vol 62 (4) ◽  
pp. m838-m840 ◽  
Author(s):  
Alvaro J. Pardey ◽  
Manoa A. Moreno ◽  
Matthias Lutz ◽  
Matti Haukka ◽  
Reinaldo Atencio
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Triple Bond ◽  
Crystal Packing ◽  
Pyridine Molecule ◽  
Carbonyl Groups ◽  
Carbonyl Ligands

The title compound, [Ir4(C5H5N)(CO)11], shows a tetrahedral Ir4 core in which each Ir atom is linked to three other Ir atoms and three terminal carbonyl groups, except for one Ir atom, which carries two carbonyl ligands and one N-coordinated pyridine molecule. An intricate set of C—H...π hydrogen bonds stabilizes the crystal packing, where the π-systems are those of the C[triple-bond]O bonds of the carbonyl ligands.

(9E)-9-Benzylidene-2-methylsulfanyl-5-phenyl-6,7,8,9-tetrahydropyrimido[4,5-b]quinolin-4(3H)-one: a hydrogen-bondedR22(8) dimer

2013 ◽  
Vol 69 (12) ◽  
pp. 1524-1526
Author(s):  
Diana Becerra ◽  
Braulio Insuasty ◽  
Justo Cobo ◽  
Christopher Glidewell
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Mild Oxidation ◽  
Envelope Conformation ◽  
Compound C ◽  
Centrosymmetric Dimers

In the molecule of the title compound, C25H21N3OS, which was prepared by mild oxidation of the corresponding 5,6,7,8,9,10-hexahydro analogue, the fused carbocyclic ring adopts an envelope conformation. Pairs of molecules are linked into cyclic centrosymmetric dimers by pairs of inversion-related N—H...O hydrogen bonds.

scholarly journals Crystal structure of dichlorido[2-(diphenylphosphanyl)-3,4,5,6-tetrafluorobenzene-1-thiolato-κ2P,S]gold(III)

2015 ◽  
Vol 71 (10) ◽  
pp. m181-m182
Author(s):  
Peter W. R. Corfield ◽  
Mary Bailey
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Dimer Formation ◽  
Polar Solvents ◽  
Square Planar ◽  
Thiolate Ligand ◽  
Cl Atoms ◽  
Low Solubility ◽  
Centrosymmetric Dimers

The title compound, [Au(C18H10F4PS)Cl2], crystallizes as neutral molecules, with the AuIIIatom coordinated by two Cl atoms and by the P and S atoms of the bidentate phosphanyl thiolate ligand, in a slightly distorted square-planar environment. The molecules are linked into centrosymmetric dimersvialong axial Au—Cl bonds of 3.393 (4) Å. This axial Au—Cl distance is longer than is usually seen, although one other example has been given. Dimer formation may explain the unexpectedly low solubility of the compound in common polar solvents. There is also a separate intermolecular Au—F contact of 3.561 (6) Å, but this distance seems too long to be regarded as a bond. Two putative C—H...F hydrogen bonds appear to link the dimers into sheets parallel to (110). There is a short intermolecular F...F contact of 2.695 (10) Å between two dimers related by the twofold axis.

scholarly journals Crystal structure ofO-ethylN-(ethoxycarbonyl)thiocarbamate

2015 ◽  
Vol 71 (10) ◽  
pp. o782-o783 ◽  
Author(s):  
Matthew J. Henley ◽  
Alex M. Schrader ◽  
Victor G. Young ◽  
George Barany
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Least Squares ◽  
Title Compound ◽  
Compound C ◽  
The One ◽  
Related Compounds ◽  
Centrosymmetric Dimers

The title compound, C6H11NO3S, provides entries to novel carbamoyl disulfanes and related compounds of interest to our laboratory. The atoms of the central O(C=S)N(C=O)O fragment have an r.m.s. deviation of 0.1077 Å from the respective least-squares plane. While several conformational orientations are conceivable, the crystal structure shows only the one in which the carbonyl and the thiocarbonyl moieties areantito each other across the central conjugated C—N—C moiety. Pairs of 2.54 Å N—H...S=C hydrogen bonds between adjacent molecules form centrosymmetric dimers in the crystal.

(E)-4-[4-(4-Chlorobenzyloxy)-3-ethoxybenzylideneamino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

2006 ◽  
Vol 62 (7) ◽  
pp. o2834-o2835 ◽  
Author(s):  
Wen-Jun Zhang ◽  
Zhong-Yu Duan ◽  
Xin Zhao
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Phenyl Ring ◽  
Dihedral Angles ◽  
Compound C ◽  
Centrosymmetric Dimers

The title compound, C27H26ClN3O3, was prepared by reacting 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one and 4-(4-chlorobenzyloxy)-3-ethoxybenzaldehyde. The central ethylvanillin group makes dihedral angles of 63.00 (11), 31.83 (7) and 74.47 (8)° with the chlorobenzene ring, the pyrazolone ring and the terminal phenyl ring, respectively. Packing is stabilized by intermolecular C—H...O hydrogen bonds that form centrosymmetric dimers.

(E)-4-[3-Ethoxy-4-(2-phenoxyethoxy)benzylideneamino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

2006 ◽  
Vol 62 (7) ◽  
pp. o2963-o2964
Author(s):  
Wen-Jun Zhang ◽  
Zhong-Yu Duan ◽  
Xin Zhao
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Dihedral Angles ◽  
Ring Plane ◽  
Compound C ◽  
Phenyl Rings ◽  
Centrosymmetric Dimers

The title compound, C28H29N3O4, was prepared by the reaction of 4-amino-1,5-dimethyl-2-phenylpyrazol-3-one and 3-ethoxy-4-(2-phenoxyethoxy)benzaldehyde. The vanillin group makes dihedral angles of 73.08 (8) and 66.54 (6)° with the planes of the two terminal phenyl rings, and an angle of 30.49 (6)° with the pyrazolone ring plane. The crystal structure is stabilized by intermolecular C—H...O hydrogen bonds that form centrosymmetric dimers.

(N,N,N′,N′′,N′′-Pentamethyldiethylenetriamine-κ3 N,N′,N′′)(trithiocyanurato-κ2 N,S)zinc(II)

2007 ◽  
Vol 63 (3) ◽  
pp. m725-m727
Author(s):  
Jaromír Marek ◽  
Zdeněk Trávníček ◽  
Šárka Čermáková
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Bidentate Ligand ◽  
Trigonal Bipyramidal Geometry ◽  
Trigonal Bipyramidal ◽  
Centrosymmetric Dimers ◽  
Close Contacts

The structure of the title compound, [Zn(C9H23N3)(C3HN3S3)], consists of discrete molecules connected by N—H...S hydrogen bonds into centrosymmetric dimers. The ZnII atom is pentacoordinated in a deformed trigonal–bipyramidal geometry by three N atoms of a tridentate N,N,N′,N′′,N′′-pentamethyldiethylenetriamine ligand, and one S and one N atoms of a trithiocyanurate dianion bonded as a bidentate ligand. The crystal structure is further stabilized by close contacts of the types C—H...S and C—H...N.

scholarly journals Methyl (E)-2-({2-[(E)-(hydroxyimino)methyl]phenoxy}methyl)-3-(4-methylphenyl)acrylate

2012 ◽  
Vol 68 (6) ◽  
pp. o1617-o1617
Author(s):  
G. Ganesh ◽  
J. Srinivasan ◽  
E. Govindan ◽  
M. Bakthadoss ◽  
A. SubbiahPandi
Keyword(s):  
Double Bond ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Aromatic Rings ◽  
Methyl Group ◽  
Compound C ◽  
Benzene Rings ◽  
The Mean ◽  
Centrosymmetric Dimers

In the title compound, C19H19NO4, the dihedral angle between the mean planes through the benzene rings is 82.18 (7)°. The C=N double bond is trans-configured. The molecules are linked into centrosymmetric dimers via pairs of O—H...N hydrogen bonds with the motif R 2 2(6). The crystal packing also features C—H...O interactions. The methyl group attached to one of the aromatic rings is disordered over two almost equally occupied positions [occpancy ratio = 0.51 (4):0.49 (4)].

scholarly journals N′′-(4-Methoxyphenyl)-N,N,N′-trimethyl-N′-phenylguanidine

2014 ◽  
Vol 70 (4) ◽  
pp. o460-o460 ◽  
Author(s):  
Ioannis Tiritiris ◽  
Wolfgang Frey ◽  
Willi Kantlehner
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Planar Geometry ◽  
Single Bond ◽  
Bond Lengths ◽  
Compound C ◽  
Centrosymmetric Dimers ◽  
Bond Character

In the title compound, C17H21N3O, the C—N bond lengths in the guanidine unit are 1.2889 (19), 1.3682 (19) and 1.408 (2) Å, indicating double- and single-bond character. The N—C—N angles are 115.10 (13), 119.29 (15) and 125.61 (14)°, showing a deviation of the CN3plane from an ideal trigonal–planar geometry. In the crystal, non-classical C—H...O hydrogen bonds between methyl H atoms and methoxy O atoms are present, generating centrosymmetric dimers running in the [101] direction.

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