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crystallography (55) 55
organic papers (46) 46
chemistry (38) 38
crystal structure (38) 38
hydrogen bonding (25) 25
single-crystal x-ray study (23) 23
t = 120 k (20) 20
research communications (16) 16
chemistry, organic (11) 11
chemistry, multidisciplinary (9) 9
aminal cage (8) 8
mean σ = 0.002 å (8) 8
tatd (8) 8
hydrogen bonds (7) 7
co-crystalline adducts (6) 6
mannich-type reaction (6) 6
molecular structure (6) 6
phenols (6) 6
spectroscopy (6) 6
aminals (5) 5
crystal-structure (5) 5
crystals (5) 5
disorder in main residue (5) 5
formaldehyde (5) 5
organic chemistry (5) 5
structure (5) 5
benzoxazines (4) 4
complexes (4) 4
c—h...π interactions (4) 4
derivatives (4) 4
dmdbta (4) 4
hexamethylenetetramine (4) 4
hydrogen (4) 4
index medicus (4) 4
magnetic resonance spectroscopy (4) 4
nitrogen (4) 4
phenolic resins (4) 4
physics (4) 4
r factor = 0.039 (4) 4
schiff bases (4) 4
tatu (4) 4
aminal structure (3) 3
analysis (3) 3
c-h⋯π interactions (3) 3
chemical physics (3) 3
conformation (3) 3
c—h⋯π interactions (3) 3
data-to-parameter ratio = 14.3 (3) 3
density (3) 3
dft (3) 3
exchange (3) 3
halogen bonding (3) 3
hexahydropyrimidine (3) 3
intramolecular hydrogen bond (3) 3
mannich bases (3) 3
mean σ = 0.004 å (3) 3
nbo analysis (3) 3
r factor = 0.027 (3) 3
r factor = 0.034 (3) 3
salan (3) 3
schiff (3) 3
short contacts (3) 3
urotropine (3) 3
x-ray (3) 3
x-ray diffraction (3) 3
1,3,6,8-tetraazatricyclo[4.3.1.1 (2) 2
1,3,6,8-tetraazatricyclo[4.4.1.1 (2) 2
2-mercaptobenzimidazole (2) 2
aminal (2) 2
anomeric effect (2) 2
article (2) 2
asymmetry (2) 2
atomic physics (2) 2
bases (2) 2
benzimidazole derivatives (2) 2
benzoimidazole derivative (2) 2
benzoxazine (2) 2
biochemistry & molecular biology (2) 2
biomolecules (2) 2
bolhmann bands (2) 2
bonding (2) 2
bonds (2) 2
cage (2) 2
carbon-disulfide (2) 2
chemical compounds (2) 2
chemical properties (2) 2
chemistry, medicinal (2) 2
chemistry/food science, general (2) 2
co-crystalline adduct (2) 2
cocrystalline adducts (2) 2
complex (2) 2
condensation (2) 2
condensation product (2) 2
data-to-parameter ratio = 12.7 (2) 2
enantiomers (2) 2
food science & technology (2) 2
ft-ir (2) 2
gem-diamine (2) 2
giao (2) 2
hydroquinone (2) 2
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Crystals, ISSN 2073-4352, 10/2019, Volume 9, Issue 10, p. 520
The title co-crystal, 1,3,5,7-tetraazatricyclo[3.3.1.13,7]decane (HMTA, 1)–4-fluorophenol (4-FP) (1/1), C6H12N4·C6H5FO, shows an unusual asymmetric unit that... 
crystal structure | hydrogen bonding | C−H···F | mechanochemistry | halogen bonding | urotropine
Journal Article
Journal of the Chilean Chemical Society, ISSN 0717-9324, 2018, Volume 63, Issue 2, pp. 3954 - 3957
A series of 2,2'-(5-hydroxydihydropyrimidine-1,3(2H, 4H)-diyl) bis-(methylene)-disubstitutedphenols was synthesized by using a Mannich-type reaction between... 
Mannich bases | Hexahydropyrimidine | Hydrogen bonding | Conformational preference | hydrogen bonding | hexahydropyrimidine | MANNICH-TYPE REACTION | CHEMISTRY, MULTIDISCIPLINARY | conformational preference
Journal Article
Acta crystallographica. Section E, Structure reports online, ISSN 1600-5368, 03/2014, Volume 70, Issue Pt 3, p. o266
The structure of the title compound, C8H16N4, which consists of four fused seven-membered rings, has been redetermined at 173 K. This redetermination corrects... 
Journal Article
Acta Crystallographica Section E: Structure Reports Online, ISSN 2056-9890, 03/2015, Volume 71, Issue 3, pp. 258 - 260
The crystal structure of the title compound, C25H24N2O2, at 173 K has monoclinic (C2/c) symmetry. The mol-ecule is located on a crystallographic twofold... 
(2-hydroxynaphthalen-1-yl) methyl | Imadazolidine | Hydrogen bonding | Crystal structure | crystal structure | hydrogen bonding | imadazolidine | (2-hydroxynaphthalen-1-yl)methyl
Journal Article
Molecules, ISSN 1420-3049, 11/2006, Volume 11, Issue 11, pp. 858 - 866
The reaction between diaminomaleonitrile (DAMN) and aldehydes and the resulting monoimines are well known. Since the standard reaction conditions involve the... 
Green Chemistry | DAMN | Monoimines | Aromatic aldehydes | HETEROCYCLIC SYNTHESIS | aromatic aldehydes | IMINES | CHEMISTRY, ORGANIC | CONDENSATION | green chemistry | monoimines | WATER | Protons | Carbon Isotopes | Spectrophotometry, Infrared | Magnetic Resonance Spectroscopy | Nitriles - chemistry | Aldehydes - chemistry | Green chemistry
Journal Article
Journal of the Chilean Chemical Society, ISSN 0717-9707, 06/2018, Volume 63, Issue 2, pp. 3954 - 3957
ABSTRACT A series of 2,2′-(5-hydroxydihydropyrimidine-1,3(2H,4H)-diyl)bis-(methylene)-disubstitutedphenols was synthesized by using a Mannich-type reaction... 
CHEMISTRY, MULTIDISCIPLINARY
Journal Article
Chemistry Central Journal, ISSN 1752-153X, 12/2011, Volume 5, Issue 1, pp. 1 - 8
Novel mono N-alkyl quaternary ammonium salts (3a-f) were prepared using the Menschutkin reaction from the cage adamanzane type aminal... 
Chemistry/Food Science, general | Chemistry | TRIAZENES | CONDENSATION PRODUCT | FORMALDEHYDE | CHEMISTRY, MULTIDISCIPLINARY | CRYSTAL-STRUCTURE | Mass spectrometry | Usage | Analytical chemistry | Studies | Nitrogen
Journal Article
Chemistry Central Journal, ISSN 1752-153X, 12/2013, Volume 7, Issue 1, pp. 1 - 10
The results presented herein show that the cyclic aminal (2S,7R,11S,16R)-1,8,10,17-tetraazapentacyclo[8.8.1.1.8,170.2,7011,16]icosane (6), derived from... 
Chemistry/Food Science, general | Chemistry | CIS-1,2-DIAMINOCYCLOHEXANE | 1,2-DIAMINOCYCLOHEXANE | SCHIFF | CRYSTAL-STRUCTURE | COMPLEXES | X-RAY | FT-IR | SPECTRA | CHEMISTRY, MULTIDISCIPLINARY | Manuscripts | Crystal structure | Vibration | Asymmetry | Mathematical analysis | Media | Phenols | Infrared radiation | Spectra | Hydrogen bonding
Journal Article
Current Organic Chemistry, ISSN 1385-2728, 12/2013, Volume 17, Issue 24, pp. 3073 - 3077
Herein, we describe the synthesis of a series of rac-N,N'-dibenzylpropane-2-aryl-substituted imidazolidines prepared from the corresponding aromatic aldehydes... 
Stereoselectivity | 5-endo-trig | Bridged bis(phenol) | Salan | vic-1,2-diamines | Imidazolidines | CHEMISTRY, ORGANIC
Journal Article
Acta Crystallographica Section C, ISSN 0108-2701, 12/2011, Volume 67, Issue 12, pp. o505 - o508
The title compound, C7H12N4O2, was obtained by nitrosation of the aminal cage (2R,7R,11S,16S)‐1,8,10,17‐tetraazapentacyclo[8.8.1.18,17.02,7.011,16]icosane. The... 
CRYSTALLOGRAPHY | Enantiomers | Structure | Hydrogen | Hydrogen bonding | Analysis | Crystals | Molecules | Hydrogen bonds | Chemical compounds | Crystallography | Crystal structure
Journal Article
Acta Crystallographica Section E: Structure Reports Online, ISSN 2056-9890, 05/2015, Volume 71, Issue 5, pp. 463 - 465
The structure of the 1:2 co-crystalline adduct C8H16N4·2C6H5BrO, (I), from the solid-state reaction of 1,3,6,8-tetraazatricyclo[4.4.1.13,8]dodecane (TATD) and... 
TATD | Hydrogen bonding | Proton transfer | Co-crystalline adducts | Crystal structure | crystal structure | co-crystalline adducts | hydrogen bonding | proton transfer
Journal Article
Synthetic Communications, ISSN 0039-7911, 02/2013, Volume 43, Issue 6, pp. 791 - 799
A series of 2,2′-(dihydropyrimidine-1,3(2H,4H)-diyldimethanediyl)bis(substituted-phenols) was synthesized using a Mannich-type reaction between the macrocyclic... 
hexahydropyrimidine | Mannich bases | ortho-regioselectivity | Anomeric effect | MANNICH-TYPE REACTION | CHEMISTRY, ORGANIC | HEXAHYDROPYRIMIDINES
Journal Article
Acta Crystallographica Section E: Structure Reports Online, ISSN 1600-5368, 08/2013, Volume 69, Issue 8, pp. o1221 - o1222
In the title compound, C24H25ClN2O2, the 2-hydroxybenzyl substituents and the 2-chlorophenyl group occupy the sterically preferred equatorial positions,... 
T = 120 K | data-to-parameter ratio = 13.9 | Rfactor = 0.057 | single-crystal X-ray study | meanω(C - C) = 0.004 A | wRfactor = 0.081 | CRYSTALLOGRAPHY
Journal Article
Acta crystallographica. Section E, Structure reports online, ISSN 1600-5368, 06/2014, Volume 70, Issue Pt 6, p. o687
The asymmetric unit of the title compound, C28H42N2O5·H2O, consists of one half of the organic mol-ecule and one half-mol-ecule of water, both of which are... 
Journal Article
Acta Crystallographica Section E: Structure Reports Online, ISSN 1600-5368, 08/2013, Volume 69, Issue 8, pp. o1295 - o1296
The asymmetric unit in the title compound, C24H26N2O3, comprises two independent molecules (A and B). In molecule A, the central 2-hydroxyphenyl ring is... 
T = 120 K | single-crystal X-ray study | Rfactor = 0.040 | meanω(C - C) = 0.003 A | data-to-parameter ratio = 12.7 | wRfactor = 0.048 | disorder in main residue | CRYSTALLOGRAPHY
Journal Article
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