[PDF] Top 20 Acetylene–ammonia–18 crown 6 (1/2/1)
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Acetylene–ammonia–18 crown 6 (1/2/1)
... an ammonia molecule on each side with a H···N distance of ...Two ammonia molecules are located below and above the crown ether plane, bound by hydrogen bonds to the oxygen atoms in the ring ...(Fig. ... See full document
8
Methyl 2 (cyclohexylamino)cyclopent 1 ene 1 dithiocarboxylate
... methyl 2- methylamino-1-cyclopentene-1-dithiocarboxylate (macsmH) and methyl 2-imino-1-cyclopentene-dithiocarboxylate (hacsmH) used in the preparation of previously reported ... See full document
6
(1H Benzimidazol 2 yl)methanaminium perchlorate–18 crown 6–water (1/1/1)
... 18-crown-6 molecule and one water molecule. In the asymmetric unit the cations and the 18-crown-6 molecules are linked by by N—H···O hydrogen bonds. The crystal packing is ... See full document
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Ethyl 6 (6 methoxynaphthalen 2 yl) 4 (naphthalen 2 yl) 2 oxocyclohex 3 ene 1 carboxylate
... Preparation of (2E)-3-(6-methoxy-2-naphthyl)-1-(1-naphthyl)prop-2-en -1-one. To a thoroughly stirred solution of 6- methoxy-2-naphthaldehyde (1.86 g, 10 mmol) and ... See full document
10
(5SR,6RS) 6 Phenyl 5 (phenylsulfonylacetyl)bicyclo[2 2 1]hept 2 ene
... S1 0.0539 (3) 0.0453 (3) 0.0340 (2) 0.0189 (2) 0.0192 (2) 0.0105 (2) O1 0.0442 (7) 0.081 (1) 0.0418 (7) 0.0025 (7) 0.0151 (6) 0.0068 (7) O2 0.092 (1) 0.082 (1) ... See full document
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5 endo,6 endo Bis(acetoxymethyl)bicyclo[2 2 1]hept 2 ene
... To 5-endo,6-endo-di(hydroxymethyl)bicyclo[2.2.1]hept-2-ene (7 g, 45 mmol) in acetic anhydride (100 ml) was added sodium acetate (37 mg, 0.45 mmol). The solvent was removed in vacuo after stirring the ... See full document
6
Ethyl 6-(6-methoxynaphthalen-2-yl)-4-(naphthalen-2-yl)-2-oxocyclohex-3-ene-1-carboxylate
... (±)-ethyl 6-(6-methoxy-2-naphthyl)-4- (4-methylphenyl)-2- oxocyclohex-3-ene-1-carboxylate (Li et ...4-(4-hydroxyphenyl)-6-(6-methoxy- ... See full document
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Crystal structure of diaqua[5,10,15,20 tetrakis(4 methoxyphenyl)porphyrinato κ4N]iron(III) diaqua(18 crown 6)potassium bis(trifluoromethanesulfonate)–18 crown 6 (1/2)
... (i) 1+x, y, z) of the aqua axial ligands of the iron moiety and the oxygens O7/O9 (and O7′/O9′) of the two trans 18-crown-6 molecules (O3—H3A···O7 and O3—H3B···O9 distances are ...related ... See full document
17
cis anti cis Dicyclohexyl 18 crown 6–thiacetazone–methanol (1/2/2)
... Two symmetry-related thiacetazone and methanol mol- ecules form a centrosymmetric tetramer via a pair of N— H O and a pair of O—H S hydrogen bonds (Fig. 2). Thus, the methanol molecule acts as a single donor and a ... See full document
9
(±)-Ethyl 6-(6-methoxy-2-naphthyl)-4-(4-methylphenyl)-2-oxocyclohex-3-ene-1-carboxylate
... 4-(3-bromothien-2-yl)- 6-(2-furyl)-2-oxocyclohex-3-ene-1-carboxylate, (7RS,8SR)-ethyl 6-(1,3-benzodioxol-5-yl)-3-(3-bromo-2-thienyl)-2-oxocyclohex-3- ... See full document
9
2 Acetyl 3 amino 1 benzofuran
... Benzofuran derivatives possess analgesic, antimicrobial, bacteriostatic, bactericidal, fungistatic and fungicidal activities (Hassaneen et al., 2002). Many natural benzofurans have physiological, pharmacological and ... See full document
6
Aquachlorodimethylphenyltin–18 crown 6 (2/1)
... the 2:1 methyldiphenyltin tri¯uoroacetate complex of 18-crown-6; this exists as a dihydrate in which the coordinated water molecules interact with the centrosymmetric cyclic polyether ... See full document
8
Ethyl 4 (3 bromo 2 thienyl) 2 oxo 6 phenylcyclohex 3 ene 1 carboxylate
... (2 E )-1-(3-Bromo-2-thienyl)-3-phenylprop-2-en-1-one (1.5 g , 5 mmol) and ethyl acetoacetate (0.65 g, 5 mmol) were refluxed for 2 hr in 10–15 ml e thanol in the presence of 0.8 ... See full document
10
Ethyl 2-(5-bromo-2-iodoanilino)cyclopent-1-ene-1-carboxylate
... C—O—CH 2 —CH 3 grouping is anti [torsion angle = 173.8 (6) ] and the bond-angle sum at the N atom bridging the two rings is 360 ...(Fig. 1, Table 1) helps to establish the molecular ... See full document
8
Dibenzo 18 crown 6–picric acid–water (1/2/3)
... In the crystal structure, O—H···O, O—H···N and C—H···O hydrogen bonds are observed (Table 1). The molecules are linked into chains along the b axis via intermolecular O—H···O hydrogen bonds (Fig. 2). In ... See full document
14
[2 (Butylamino)cyclopent 1 ene 1 carbodithioato]chlorodiphenyltin(IV)
... The ligand was synthesized by a reported method (Bordas et al., 1972). The title compound was prepared by the reaction of the ligand acid (1.0 g, 4.6 mmol) with diphenyltin(IV) dichloride (0.6 g, 4.65 mmol) in dry ... See full document
10
1,4,7,10,13,16 Hexaoxacyclooctadecane–ammonia (1/2)
... called crown ethers, certainly is one of the most useful substance classes in organic, metallorganic and inorganic ...chemistry. Crown ethers, which are tools to increase the solubility of inorganic salts ... See full document
9
2 (Mesitylmethylsulfanyl)pyridine N oxide–18 crown 6 (2/1)
... antimicrobial and antibacterial activities (Lobana & Bhatia, 1989; Symons et al.,1985). These compounds are also found to be involved in DNA strand scission under physiological conditions (Katsuyuki et al., 1991; ... See full document
8
Bis(hydroxyammonium) hexachloridoplatinate(IV)–18 crown 6 (1/2)
... the crown ether ...a crown ether molecule by hydrogen bonds between ammonium H atoms and 18-crown-6 O ...The crown ether molecules have the classic crown shape in which ... See full document
9
1 Acetyl 3 ethyl r 2,c 6 di 2 furylpiperidin 4 one
... In (I) (Fig. 1), all bond lengths and angles are normal. The piperidine ring adopts a chair conformation. The mean plane of atoms C2/C3/C5/C6 and the furyl rings attached to C2 and C6 make dihedral angles of 80.1 ... See full document
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