Detail of "58345-97-4"

Reference

Dichloro(4'-phenyl-2,2':6',2''-terpyridine-k3N)zinc(II) monohydrate

Dichloro(4'-phenyl-2,2':6',2''-terpyridine-k3N)zinc(II) monohydrate. Tu, Qi Dong; Li, Dan; Wu, Tao; Yin, Ye Gao; Ng, Seik Weng ( Department of Chemistry, Shantou University, Guangdong 515063, Peop. Rep. China). Acta Crystallographica, Section E: Structure Reports Online, E60(10), m1403-m1404 (English) 2004 Blackwell Publishing Ltd. URL: http://journals.iucr.org/e/graphics/htmlborder.gif. CODEN: ACSEBH. ISSN: 1600-5368. DOCUMENT TYPE: Journal; (online computer file) CA Section: 75 (Crystallography and Liquid Crystals) Section cross-reference(s): 78 Crystals of the title compd.Several reagents with their cas registry numbers 58345-97-4 and 825648-48-4 are used here. are triclinic, space group P1, with a 7.8813(6), b 16.355(1), c 17.228(1) ?, a 117.131(1), b 95.273(1), g 93.091(1)°; Z = 2 (2 mols./Z), dc = 1.574; R = 0.062, Rw(F2) = 0.181 for 8709 reflections. The Zn atom in each of the two symmetry-independent complex mols. shows trigonal-bipyramidal coordination as the N-heterocycle is able to span the two axial sites of the coordination polyhedron. One of the mols. occupies a position in the crystal structure such that it does not interact with any H2O mol.; the other interacts with two H2O mols. to give rise to a H-bonded chain that runs along the a axis of the triclinic unit cell. .

The synthesis of 4'-aryl substituted terpyridines by Suzuki cross-coupling reactions: substituent effects on ligand fluorescence

The synthesis of 4'-aryl substituted terpyridines by Suzuki cross-coupling reactions: substituent effects on ligand fluorescence. Goodall, Wendy; Wild, Kerstin; Arm, Kathryn J.; Williams, J. A. Gareth ( Department of Chemistry, University of Durham, Durham DH1 3LE, UK). Journal of the Chemical Society, Perkin Transactions 2, (10), 1669-1681 (English) 2002 Royal Society of Chemistry. CODEN: JCSPGI. ISSN: 1472-779X. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 73 Several 4'-aryl-substituted 2,2':6',2''-terpyridines (tpy-C6H4R) have been prepd. by palladium-catalyzed cross-coupling of 4'-bromoterpyridine or 4'-triflate-terpyridine (triflate = trifluoromethylsulfonyloxy) with aryl boronic acids or esters, RC6H4B(OR')2 (R = H, m-NH2, p-CHO, -NO2, -CN, -NMe2, -NPh2). The new ligand 4'-mesitylterpyridine (mesityl = 2,4,6-trimethylphenyl) was prepd. in the same way. Similarly, 4'-bromophenylterpyridine (tpy-[phis]-Br) has been cross-coupled with aryl halides to generate several new biaryl-substituted terpyridines (tpy-[phis]-C6H4R where R = H, p-CN, NMe2, NPh2), together with two related compds. with pendent 3- or 4-pyridyl groups (tpy-[phis]-C6H4-py).In this article, certain chemicals are used. One of their cas registry numbers is 58345-97-4 For selected compds., the alternative coupling strategy of reaction of a terpyridine-4-boronate or terpyridine-4-phenylboronate with the appropriate aryl halide has also been investigated (e.g. to prep. tpy-[phis]-C6H4NO2), but was generally found to be less satisfactory. All of the compds. are fluorescent in the UV region of the spectrum, the biaryl-substituted compds. being only slightly red-shifted compared to the monoaryl systems, but with the further red-shift that accompanies protonation being more significant for the former. Fluorescence lifetimes in soln. are in the range 1-5 ns. The emission spectra of the aminobiphenyl-substituted compds. (tpy-[phis]-C6H4NR''2, where R'' = Me or Ph) display a large red-shift with increasing solvent polarity, suggesting the involvement of an intramol. charge transfer state, as found previously for the two analogs omitting the Ph ring (tpy-C6H4NR''2). In contrast to the latter, however, protonation or binding of a Lewis acidic metal ion to the aminobiphenyl compds. serves to quench almost completely their emission. .