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Shuyuan Huang,Qianqian Wang
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810026760
Abstract: In the title molecule [systematic name: 12,15-dibromo-52,53,55,56-tetramethyl-3,7-dithia-1,5(1,4)-dibenzenacyclooctaphane], C20H22Br2S2, the distance between the centroids of the two benzene rings is 3.326 (4) , and their mean planes are almost parallel, forming a dihedral angle of 1.05 (7)°. The crystal packing exhibits no intermolecular contacts shorter than the sum of van der Waals radii.
Guojun Jin,Yinghui Lu
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810029053
Abstract: In the title compound [systematic name: 12,15-dibromo-52,55-dimethoxy-2,7-dithia-1,5(1,4)-dibenzenaoctaphane], C18H18Br2O2S2, the dihedral angle between the aromatic rings is 0.6 (2)° and their centroid separation is 3.251 (2) , indicating that a trans-annular π–π interaction occurs. The dimethoxy and dibromo substituents are located at crossed positions because of the electronic and the steric nature of the substituents.
Hua Zhang,Wenju Liu
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811048458
Abstract: In the title compound [systematic name: 13,15-dibromo-3,10-dithiatricyclo[,8]octadeca-1(14),5,7,12,15,17-hexaene-6-carbonitrile], C17H13Br2NS2, the mean planes of the benzene rings are almost parallel, making a dihedral angle of 1.1 (2)°, and the distance between the ring centroids is 3.294 (3) , which is shorter than the normal packing distance of aromatic rings (about 3.4 ), indicating a strong π–π interaction. The S atom of one bridging chain is disorderd over two positions with site occupancies of 0.605 (4) and 0.395 (4) for the major and minor components, respectively.
Fang Hu,Zhi-Ming Chen
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811048434
Abstract: In the title compound [systematic name: 13,15-dibromo-6-nitro-3,10-dithiatricyclo[,8]octadeca-1(14),5,7,12,15,17-hexaene], C16H13Br2NO2S2, the dihedral angle between the two benzene rings is 0.93 (2)°. The crystal structure is stabilized by weak π–π intermolecular interactions [centroid–centroid distance = 3.286 (5) ]. One S atom and the H atoms on neighboring C atoms are disordered over two sets of sites (occupancy ratios: S = 0.91:0.09 and H = 0.93:0.07).
Xingxun Zhu,Ming Hu
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810028874
Abstract: In the title compound, C16H14Br2S2 [systematic name: 12,52-dibromo-2,7-dithia-1,5(1,4)-dibenzenaoctaphane], the centroids of the two benzene rings are separated by 3.313 (5) . The crystal packing exhibits weak intermolecular S...S contacts of 3.538 (2) .
5,8-Bis(3-hydroxy-3-methylbut-1-yn-1-yl)-2,11-dithia[3.3]paracyclophane  [cached]
Di Wu,Jie Huang
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811048446
Abstract: In the crystal structure of the title compound [systematic name: 2,2′-dimethyl-4,4′-(3,10-dithiatricyclo[,8]octadeca-1(14),5,7,12,15,17-hexaen-6,17-diyl)dibut-3-yn-2-ol], C26H28O2S2, molecules are linked by O—H...O hydrogen bonds, forming a tubular chain which runs parallel to the b axis. The tubular structure is reinforced by π–π stacking interactions [centroid–centroid distance = 3.6332(16 ].
5,8-Dibromo-2,11-dithia[3,3](2,6)pyridinoparacyclophane  [cached]
Si-Si Li,Bei Zhang,Hong-Lin Zhang
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810028850
Abstract: The title compound, C15H13Br2NS2 [systematic name: 12,15-dibromo-2,7-dithia-1(1,4)-benzena-5(2,6)-pyridinaoctaphane], contains a dibromo-substituted benzene ring and a pyridine ring that are linked by a pair of bridging —CH2SCH2— groups. There is a weak π–π interaction between the rings, the distance between the ring centroids being 3.572 (4) . The rings are not parallel, but form a dihedral angle of 18.29 (4)°.
Enantiospecific synthesis of [2.2]paracyclophane-4-thiol and derivatives  [cached]
Gareth J. Rowlands,Richard J. Seacome
Beilstein Journal of Organic Chemistry , 2009, DOI: 10.3762/bjoc.5.9
Abstract: This paper describes a simple route to enantiomerically enriched [2.2]paracyclophane-4-thiol via the stereospecific introduction of a chiral sulfoxide to the [2.2]paracyclophane skeleton. The first synthesis of an enantiomerically enriched planar chiral benzothiazole is also reported.
4,12-Bis(2,2-dibromovinyl)[2.2]paracyclophane  [cached]
Sébastien Clément,Laurent Guyard,Michael Knorr,Christian Däschlein
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809002475
Abstract: In the title compound, C20H16Br4, both vinylic substituents were introduced by a Corey–Fuchs reaction using 4,12-diformyl[2.2]paracyclophane as starting material. The title compound may be used as a valuable precursor for the synthesis of diethynyl[2.2]paracyclophane. The title molecule is centrosymmetric with a crystallographic center of inversion between the centers of the two phenyl rings. A strong tilting is observed with an interplanar angle between the best aromatic plane and the vinyl plane of 49.4 (5)°. No significant intermolecular interactions are found in the crystal.
4-Amino-13-(1-naphthyl)-[2,2]paracyclophane  [cached]
Junshan Sun,Yanmin Huo,Rentao Wu,Jikun Li
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808005333
Abstract: The title compound [systematic name: 12-amino-42-(1-naphthyl)-1,4(1,4)-dibenzenacyclohexaphane], C26H23N, was synthesized from 4-amino-13-bromo-[2,2]paracyclophane and 1-naphthaleneboronic acid in the presence of 1,4-dioxane. It is a new cyclophane-derived compound which can be regarded as a prospective ligand for asymmetric synthesis and catalysis. The benzene rings of the paracyclophane units are very slightly deformed from planarity as shallow boats.
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