Search results for "Borane"
showing 10 items of 278 documents
Substitution of the laser borane anti-B18H22 with pyridine: a structural and photophysical study of some unusually structured macropolyhedral boron h…
2018
Reaction of anti-B18H221 with pyridine in neutral solvents gives sparingly soluble B16H18-3',8'-Py23a as the major product (ca. 53%) and B18H20-6',9'-Py22 (ca. 15%) as the minor product, with small quantities of B18H20-8'-Py 4 (ca. 1%) also being formed. The three new compounds 2, 3a and 4 are characterized by single-crystal X-ray diffraction analyses and by multinuclear multiple-resonance NMR spectroscopy. Compound 2 is of ten-vertex nido:ten-vertex arachno two-atoms-in-common architecture, long postulated for a species with borons-only cluster constitution, but previously elusive. Compound 3a is of unprecedented ten-vertex nido:eight-vertex arachno two-atoms-in-common architecture. The si…
Effect of Iodination on the Photophysics of the Laser Borane anti-B18H22: Generation of Efficient Photosensitizers of Oxygen
2019
Treatment of the laser borane anti-B18H22 (compound 1) with iodine in ethanol gives the monoiodinated derivative 7-I-anti-B18H21 (compound 2) in 67% yield, or, by reaction with iodine or ICl in the presence of AlCl3 in dichloromethane, the diiodinated derivative 4,4'-I2-anti-B18H20 (compound 3) in 85% yield. On excitation with 360 nm light, both compounds 2 and 3 give strong green phosphorescent emissions (λmax = 525 nm, ΦL = 0.41 and λmax = 545 nm, ΦL = 0.71 respectively) that are quenched by dioxygen to produce O2(1Δg) singlet oxygen with quantum yields of ΦΔ = 0.52 and 0.36 respectively. Similarly strong emissions can be stimulated via the nonlinear process of two-photon absorption when …
Amino‐Substituted Ferra‐bis(tricarbollides) − Metallatricarbaboranes Designed for Linear Molecular Constructions
2004
Reactions between high purity FeCl2 and the anion [nido-7-(tBuHN)-7,8,9-C3B8H10)]− (1−) have been used for efficient syntheses of the twelve-vertex double-cluster metallatricarbollide complexes of the para,para (p,p) type [closo-9,9′(RHN)2-commo-2,2′-FeII-1,7,9-(C3B8H10)-1′,7′,9′-(C3B8H10)] (2) (2a, R = tBu and 2b, R = H) (yields 42−45% for 2a). Compound 2b, which contains two reactive amino substituents conveniently attached to the tricarbollide subclusters in p-positions with respect to the metal center, was prepared via facile cleavage of the tBu substituent in 2a either by AlCl3 or by thermal means. The structure of 2b constitutes a good setting for the synthesis of building blocks for …
CCDC 986491: Experimental Crystal Structure Determination
2014
Related Article: Albert Ferrer-Ugalde, Arántzazu González-Campo, Clara Viñas, Jesús Rodríguez-Romero, Rosa Santillan, Norberto Farfán, Reijo Sillanpää, Antonio Sousa-Pedrares, Rosario Núñez, Francesc Teixidor|2014|Chem.-Eur.J.|20|9940|doi:10.1002/chem.201402396
CCDC 1569222: Experimental Crystal Structure Determination
2017
Related Article: Justo Cabrera-González, Clara Viñas, Matti Haukka, Santanu Bhattacharyya, Johannes Gierschner, Rosario Núñez|2016|Chem.-Eur.J.|22|13588|doi:10.1002/chem.201601177
CCDC 1058314: Experimental Crystal Structure Determination
2015
Related Article: Marius Lupu, Adnana Zaulet, Francesc Teixidor, Reijo Sillanpää, Clara Viñas|2015|J.Organomet.Chem.|798|171|doi:10.1016/j.jorganchem.2015.05.053
CCDC 627239: Experimental Crystal Structure Determination
2007
Related Article: R.Nunez, A.Gonzalez-Campo, A.Laromaine, F.Teixidor, R.Sillanpaa, R.Kivekas, C.Vinas|2006|Org.Lett.|8|4549|doi:10.1021/ol061767k
CCDC 1441505: Experimental Crystal Structure Determination
2018
Related Article: Michael G. S. Londesborough, Jiří Dolanský, Tomáš Jelínek, John D. Kennedy, Ivana Císařová, Robert D. Kennedy, Daniel Roca-Sanjuán, Antonio Francés-Monerris, Kamil Lang, William Clegg|2018|Dalton Trans.|47|1709|doi:10.1039/C7DT03823B
CCDC 2009112: Experimental Crystal Structure Determination
2020
Related Article: Jonathan Bould, Kamil Lang, Kaplan Kirakci, Luis Cerdán, Daniel Roca-Sanjuán, Antonio Francés-Monerris, William Clegg, Paul G. Waddell, Marcel Fuciman, Tomáš Polívka, Michael G. S. Londesborough|2020|Inorg.Chem.|59|17058|doi:10.1021/acs.inorgchem.0c02277
CCDC 241028: Experimental Crystal Structure Determination
2004
Related Article: R.Nunez, O.Tutusaus, F.Teixidor, C.Vinas, R.Sillanpaa, R.Kivekas|2004|Organometallics|23|2273|doi:10.1021/om030635h