Reference

A Novel Right-Angled Ligand that Forms Polymeric Metal-Organic Frameworks with Nanometer-Sized Square Cavities

A Novel Right-Angled Ligand that Forms Polymeric Metal-Organic Frameworks with Nanometer-Sized Square Cavities. Wong, Ken-Tsung; Liao, Yuan-Li; Peng, Ying-Chu; Wang, Chih-Chieh; Lin, Sue-Yi; Yang, Cheng-Han; Tseng, Shih-Min; Lee, Gene-Hsiang; Peng, Shie-Ming (Department of Chemistry, National Taiwan University, Taipei 106, Taiwan). Crystal Growth & Design, 5(2), 667-671 (English) 2005 American Chemical Society. CODEN: CGDEFU. ISSN: 1528-7483. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 28, 75 A new right angle-shaped ligand, 2,2'-bis(4-pyridyl)-9,9'-spirobifluorene (L, I), is designed and synthesized. Treatment of L with silver(I) ions leads to linear polymeric metal-org. frameworks, [Ag(L)2]+ (1), that feature square subunits. Single-crystal x-ray anal. reveals that [Ag(L)2]+ has a 1-dimensional double-stranded polymeric chain comprising square grids with cavity dimensions of ca. 8 ? ′ 8 ?. By p-p stacking of adjacent double-stranded chains, the structure is extended into a two-dimensional (2D) layer framework with a unique quasi-aperture (dimensions of ca. 14 ? ′ 8 ?). Each 2-dimensional layer is inclined and mutually interpenetrated, which gives rise to the three-dimensional interlocked network structure. Compd. 1×(BF4)(CH3OH) crystallizes in the monoclinic system, space group C2/c, with chem. formula C71H49N4OBF4Ag, a 25.709(1), b 14.4164(6), c 15. 790674-51-0 and 19524-06-2 are just another two chemicals used in this study.6865(7) ?, b 109.220(2)°, and Z = 4. .

Synthesis of bis(4-pyridyl)methane

Synthesis of bis(4-pyridyl)methane. Gaus, P. L.; Haim, Albert; Johnson, Francis (Dep. Chem. 1120-87-2 is the cas registry number. This chemical is also mentioned in this article., State Univ. New York, Stony Brook, N. Y., USA). J. Org. Chem., 42(3), 564-5 (English) 1977. CODEN: JOCEAH. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Bis(4-pyridyl)methane was prepd. by the Huang-Minlon modification of the Wolff-Kishner redn. of bis(4-pyridyl) ketone in BuOH. .