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Rhodium-catalyzed dehydrocoupling of the sterically encumbered phosphine-borane adduct tBu(2)PH.BH(3): synthesis of the linear dimers tBu(2)PH-BH(2)-tBu(2)P-BH(3) and tBu(2)PH-BH(2)-tBu(2)P-BH(2)Cl.

Inorganic chemistry

Dorn H, Vejzovic E, Lough AJ, Manners I.
PMID: 11487339
Inorg Chem. 2001 Aug 13;40(17):4327-31. doi: 10.1021/ic0100626.

The dehydrocoupling of the sterically hindered phosphine-borane adduct tBu(2)PH.BH(3) above 140 degrees C is catalyzed by the rhodium complexes [Rh(1,5-cod)(2)][OTf] or Rh(6)(CO)(16) to give the four-membered chain tBu(2)PH-BH(2)-tBu(2)P-BH(3) (1), which was isolated in 60% yield and characterized by multinuclear...

Hydrated salts of 3,5-dihydroxybenzoic acid with organic diamines: hydrogen-bonded supramolecular structures in two and three dimensions.

Acta crystallographica. Section B, Structural science

Burchell CJ, Ferguson G, Lough AJ, Gregson RM, Glidewell C.
PMID: 11373391
Acta Crystallogr B. 2001 Jun;57:329-38. doi: 10.1107/s0108768100019832. Epub 2001 Jun 01.

The trigonally trisubstituted acid 3,5-dihydroxybenzoic acid forms hydrated salt-type adducts with organic diamines. In 1,4-diazabicyclo[2.2.2]octane-3,5-dihydroxybenzoic acid-water (1/1/1) (1), where Z' = 2 in P2(1)/c, the constitution is [HN(CH(2)CH(2))(3)N](+).[(HO)(2)C(6)H(3)COO](-).H(2)O: the anions and the water molecules are linked by six O-H.O...

Phosphonopropionic acid as a building block in supramolecular chemistry: salts with organic diamines.

Acta crystallographica. Section B, Structural science

Bowes KF, Ferguson G, Lough AJ, Glidewell C.
PMID: 12657817
Acta Crystallogr B. 2003 Apr;59:248-62. doi: 10.1107/s0108768102021237. Epub 2003 Mar 26.

The structures of seven salts formed by phosphonopropionic acid with organic diamines are reported; in these salts, the hydrogen-bonded substructures formed by the anions can be zero-, one- or two-dimensional, while the overall hydrogen-bonded supramolecular structures are three-dimensional. The...

Preparation of Rhenium(I) and Rhenium(II) Amine Dinitrogen Complexes and the Characterization of an Elongated Dihydrogen Species.

Inorganic chemistry

Chin RM, Barrera J, Dubois RH, Helberg LE, Sabat M, Bartucz TY, Lough AJ, Morris RH, Harman WD.
PMID: 11670037
Inorg Chem. 1997 Jul 30;36(16):3553-3558. doi: 10.1021/ic9700866.

A series of rhenium(I) dinitrogen complexes were prepared containing predominantly amine ligands. On the basis of infrared and electrochemical data, a system was selected that was anticipated to be a suitable precursor for an elongated dihydrogen complex. Upon oxidation...

F8BINOL, an electronically perturbed version of BINOL with remarkable configurational stability.

Organic letters

Yudin AK, Martyn LJ, Pandiaraju S, Zheng J, Lough A.
PMID: 10814241
Org Lett. 2000 Jan;2(1):41-4. doi: 10.1021/ol991244v.

[structure: see text] Substitution of hydrogens by fluorines at the 5, 5', 6, 6', 7, 7', 8, and 8' positions of BINOL strongly affects distribution of electron density within the biaryl skeleton but has a very small influence on...

Rethinking the formula.

Drug discovery today

Clough J.
PMID: 11983566
Drug Discov Today. 2002 May 01;7(9):506-8. doi: 10.1016/s1359-6446(02)02276-6.

No abstract available.

Self-assembled hydrogen-bonded bilayers in 1,4-diazabicyclo[2.2.2]octane-N-(phosphonomethyl)iminodiacetic acid-water (1/1/1.5).

Acta crystallographica. Section C, Crystal structure communications

Bowes KF, Ferguson G, Glidewell C, Lough AJ.
PMID: 12154301
Acta Crystallogr C. 2002 Aug;58:o467-9. doi: 10.1107/s0108270102010648. Epub 2002 Jul 12.

The title compound is a hydrated salt, 1,4-diazoniabicyclo[2.2.2]octane-N-[(hydroxyphosphinato)methyl]iminiodiacetate-water (1/1/1.5), C(6)H(14)N(2)(2+).C(5)H(8)NO(7)P(2-).1.5H(2)O, in which one of the water molecules lies across a twofold rotation axis in space group P2/n. The ionic components are linked into sheets by a combination of a...

Left-sided multifractality in a binary random multiplicative cascade.

Physical review. E, Statistical, nonlinear, and soft matter physics

Hanan WG, Gough J, Heffernan DM.
PMID: 11304236
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Jan;63(1):011109. doi: 10.1103/PhysRevE.63.011109. Epub 2000 Dec 27.

In this paper we study a binary random multiplicative cascade. Specifically, the cascade is used to produce and study left-sided multifractal random measures. Extensive numerical simulations of the random cascade process were undertaken and f(alpha) spectra obtained and compared...

Mechanism of the hydrogenation of ketones catalyzed by trans-dihydrido(diamine)ruthenium II complexes.

Journal of the American Chemical Society

Abdur-Rashid K, Clapham SE, Hadzovic A, Harvey JN, Lough AJ, Morris RH.
PMID: 12475357
J Am Chem Soc. 2002 Dec 18;124(50):15104-18. doi: 10.1021/ja016817p.

The complexes trans-RuH(Cl)(tmen)(R-binap) (1) and (OC-6-43)-RuH(Cl)(tmen)(PPh(3))(2) (2) are prepared by the reaction of the diamine NH(2)CMe(2)CMe(2)NH(2) (tmen) with RuH(Cl)(PPh(3))(R-binap) and RuH(Cl)(PPh(3))(3), respectively. Reaction of KHB(sec)Bu(3) with 1 yields trans-Ru(H)(2)(R-binap)(tmen) (5) while reaction of KHB(sec)Bu(3) or KO(t)Bu with 2 under...

meso-5,5,7,12,12,14-hexamethyl-1,4-diaza-8,11-diazoniacyclotetradecane bis(2-naphthoate) ethanol disolvate: centrosymmetric five-component aggregates linked into sheets by C-H...pi(arene) hydrogen bonding.

Acta crystallographica. Section C, Crystal structure communications

Bowes KF, Ferguson G, Lough AJ, Glidewell C.
PMID: 12711791
Acta Crystallogr C. 2003 Mar;59:o147-9. doi: 10.1107/s0108270103002804. Epub 2003 Feb 18.

The title compound is an ethanol-solvated salt, C(16)H(38)N(4)(2+) x -2C(11)H(7)O(2)(-) x -2C(2)H(6)O, in which the cation lies across a centre of inversion in P2(1)/c. The ions are linked by N-H...O hydrogen bonds [H...O = 1.70 and 2.30 A, N...O...

Threefold interweaving of (4,4) nets built from R(10)10(58) rings inthe hydrogen-bonded adduct 1,4-diazabicyclo.

Acta crystallographica. Section C, Crystal structure communications

Burchell CJ, Ferguson G, Lough AJ, Glidewell C.
PMID: 10986506
Acta Crystallogr C. 2000 Sep;56:1126-8. doi: 10.1107/s010827010000771x.

The 1:1 adduct of 1,4-diazabicyclo[2.2.2]octane and 5-hydroxyisophthalic acid is a salt, [H(C(6)H(12)N(2))](+). [HOC(6)H(3)(COOH)COO](-) or C(6)H(13)N(2)(+).C(8)H(5)O(5)(-). The ions are linked by three types of hydrogen bond, i.e. N-H.O, O-H.O and O-H.N, into continuous two-dimensional (4,4) nets built from a single...

Carbamoyl-substituted N-heterocyclic carbene complexes of palladium(II): application to Sonogashira cross-coupling reactions.

Organic letters

Batey RA, Shen M, Lough AJ.
PMID: 11975591
Org Lett. 2002 May 02;4(9):1411-4. doi: 10.1021/ol017245g.

[reaction: see text]. The first examples of N-carbamoyl-substituted heterocyclic carbene Pd(II) complexes are described. These thermal and hydrolytically stable complexes are readily prepared from carbamoyl imidazolium salts and efficiently promote Sonogashira cross-coupling reactions under mild conditions. Cesium carbonate is...

Showing 25 to 36 of 505 entries