All Outputs (32)

Conformational diastereoisomers of PPh3 coordinated to stereogenic metal centres as molecular optical switches (2001)
Journal Article
Ayscough, A. P., Costello, J. F., & Davies, S. G. (2001). Conformational diastereoisomers of PPh3 coordinated to stereogenic metal centres as molecular optical switches. Tetrahedron: Asymmetry, 12(11), 1621-1624. https://doi.org/10.1016/S0957-4166%2801%2900253-1

The specific rotation of (RFe,R,M)-4 switches sign upon epimerisation to (RFe,S,P)-5. X-Ray crystallographic studies suggest that inversion of the propeller configuration of the coordinated PPh3 ligand is the major contributor to the switch of specif... Read More about Conformational diastereoisomers of PPh3 coordinated to stereogenic metal centres as molecular optical switches.

Synthesis and structure of organoantimony (V) cyclometallates: Transannular interactions and the barrier to cyclisation (2001)
Journal Article
Barucki, H., Coles, S. J., Costello, J. F., & Hursthouse, M. B. (2001). Synthesis and structure of organoantimony (V) cyclometallates: Transannular interactions and the barrier to cyclisation. Journal of Organometallic Chemistry, 622(1-2), 265-273. https://doi.org/10.1016/S0022-328X%2800%2900923-2

A variety of α-hydroxy carboxylic acid salts [AgO2CC(OH)R1R2] react with SbPh3Cl2 1 to afford the cyclometalled complexes 4b-g. A single crystal X-ray analysis of (±)-4g reveals the presence of conformational diastereoisomers arising from the helical... Read More about Synthesis and structure of organoantimony (V) cyclometallates: Transannular interactions and the barrier to cyclisation.

Characterising secondary bonding interactions within triaryl organoantimony(v) and organobismuth(v) complexes (2000)
Journal Article
Barucki, H., Coles, S. J., Costello, J. F., Gelbrich, T., & Hursthouse, M. B. (2000). Characterising secondary bonding interactions within triaryl organoantimony(v) and organobismuth(v) complexes. https://doi.org/10.1039/b002337j

The thermodynamically preferred conformations of the five-co-ordinate trigonal-bipyramidal complexes SbPh3CI21 and BiPh3Cl2 2, determined via van der Waals energy calculations, have been found to be in good agreement with the corresponding correlated... Read More about Characterising secondary bonding interactions within triaryl organoantimony(v) and organobismuth(v) complexes.

The conformational analysis of phosphine ligands in organometallic complexes: Part 2: Triphenylphosphine coordinated to achiral and prochiral octahedral metal centres (1999)
Journal Article
Costello, J. F., Davies, S. G., & McNally, D. (1999). The conformational analysis of phosphine ligands in organometallic complexes: Part 2: Triphenylphosphine coordinated to achiral and prochiral octahedral metal centres. Journal of the Chemical Society, Perkin Transactions 2, 465-474. https://doi.org/10.1039/A808794F

The novel concept of nadir energy planes has been used to illuminate the principles governing the preferred orientation of rings A-C in PPh3 1, coordinated to achiral octahedral metal complexes of the type [M(PPh3)L1-5] 2a-d, and prochiral octahedral... Read More about The conformational analysis of phosphine ligands in organometallic complexes: Part 2: Triphenylphosphine coordinated to achiral and prochiral octahedral metal centres.

The conformational analysis of phosphine ligands in organometallic complexes: Part 1: Triphenylphosphine coordinated to an achiral metal centre 1 (1998)
Journal Article
Costello, J. F., & Davies, S. G. (1998). The conformational analysis of phosphine ligands in organometallic complexes: Part 1: Triphenylphosphine coordinated to an achiral metal centre 1. Journal of the Chemical Society, Perkin Transactions 2, 7, 1683-1690. https://doi.org/10.1039/A708014J

The conformational analyses of PPh3 1 and the representative achiral metal complexes [Al(PPh3)(Me)3] 2, [Fe(PPh3)(CO)4] 7 and [Ir(PPh3)2(CO)3]+ 8 possessing tetrahedral and trigonal-bipyramidal geometries are reported, and comparisons between the cal... Read More about The conformational analysis of phosphine ligands in organometallic complexes: Part 1: Triphenylphosphine coordinated to an achiral metal centre 1.

Structure of organoruthenium-derived Langmuir monolayers at the air-water interface: A molecular-modelling approach (1997)
Journal Article
Costello, J. F., Davies, S. G., Highcock, R. M., Polywka, M. E. C., Poulter, M. W., Richardson, T., & Roberts, G. G. (1997). Structure of organoruthenium-derived Langmuir monolayers at the air-water interface: A molecular-modelling approach. Journal- Chemical Society Dalton Transactions, 1(1), 105-110. https://doi.org/10.1039/A605348C

A two-dimensional model for the structure of films fabricated from organoruthenium amphiphiles of the type [Ru(η5-C5H5)(PPh2R) 2(p-NCC6H4OR′)]PF6 (R = Ph,p-tolyl or p-biphenyl; R′ = Et or C16H33) at the air-water interface has been devised.

Origins of the high stereoselectivity in the conjugate addition of lithium(α-methylbenzyl)benzylamide to t-butyl cinnamate (1994)
Journal Article
Costello, J. F., Davies, S. G., & Ichihara, O. (1994). Origins of the high stereoselectivity in the conjugate addition of lithium(α-methylbenzyl)benzylamide to t-butyl cinnamate. Tetrahedron: Asymmetry, 5(10), 1999-2008. https://doi.org/10.1016/S0957-4166%2800%2986275-8

A model for the stereoselective conjugate addition of lithium (α-methylbenzyl) benzylamide, to t-butyl cinnamate has been devised, using molecular modelling techniques. © 1994.

Kinetic resolution of the chiral iron acetyl complexes [Fe(CO) (η5-C5H5)(L)COCH3] [L= PPh 3, P(p-tolyl)3] via aldol reactions with camphor (1994)
Journal Article
Case-Green, S. C., Costello, J. F., Davies, S. G., Heaton, N., Hedgecock, C. J. R., Humphreys, V. M., …Primes, J. C. (1994). Kinetic resolution of the chiral iron acetyl complexes [Fe(CO) (η5-C5H5)(L)COCH3] [L= PPh 3, P(p-tolyl)3] via aldol reactions with camphor. Journal of the Chemical Society, Perkin Transactions 1, 933-941. https://doi.org/10.1039/P19940000933

The chiral iron acetyl complexes [Fe(CO)(η5-C 5H5)(L)COCH3] [L = PPh3, P(p-tolyl)3] have been kinetically resolved via aldol reactions involving their derived lithium enolates and camphor in the presence of lithium chloride. With (1R)-(+)-camphor the... Read More about Kinetic resolution of the chiral iron acetyl complexes [Fe(CO) (η5-C5H5)(L)COCH3] [L= PPh 3, P(p-tolyl)3] via aldol reactions with camphor.

A novel one-pot synthesis of homochiral (R)-(-)- and (S)-(+)-Fe(CO) (η5-C5H5)(PPh3)COCH3 (1994)
Journal Article
Cook, S. J., Costello, J. F., Davies, S. G., & Kruk, H. T. (1994). A novel one-pot synthesis of homochiral (R)-(-)- and (S)-(+)-Fe(CO) (η5-C5H5)(PPh3)COCH3. Journal of the Chemical Society, Perkin Transactions 1, 17(17), 2369-2372. https://doi.org/10.1039/p19940002369

Treatment of the salt [Fe(CO)2(η5-C 5H5)(PPh3)]Br with potassium L-mentholate followed by lithium bromide and methyllithium generates, after work-up and crystallisation, homochiral (S)-(+)-[Fe(CO)(η5-C 5H5)(PPh3)COCH3] in ≥ 30% yield.

Kinetic resolution of the chiral iron acetyl [Fe(η5-C5H5)(CO)(PPh3)COMe] (1993)
Journal Article
Prime, J. C., Hedgecock, C. J., Case-Green, S. C., Costello, J. F., Davies, S. G., Heaton, N., …Primes, J. C. (1993). Kinetic resolution of the chiral iron acetyl [Fe(η5-C5H5)(CO)(PPh3)COMe]. Journal of the Chemical Society, Chemical Communications, 21(21), 1621-1622. https://doi.org/10.1039/C39930001621

The chiral discrimination displayed between the enolate derived from (RS)-[Fe(η5-C5H5)(CO)(PPh3)COMe] and (1R)-(+)-camphor furnishes a practical route to homochiral (R)-[Fe(η5-C5H5)(CO)(PPh3)COMe] via a kinetic resolution protocol, while a retro-aldo... Read More about Kinetic resolution of the chiral iron acetyl [Fe(η5-C5H5)(CO)(PPh3)COMe].

Pyroelectric organo-ruthenium Langmuir-Blodgett films (1992)
Journal Article
Davies, S. G., Costello, J. F., Roberts, G. G., Poulter, M. W., Poulter, M. W., Roberts, G. G., …Edwards, A. J. (1992). Pyroelectric organo-ruthenium Langmuir-Blodgett films. Thin Solid Films, 210-211(PART 2), 427-429. https://doi.org/10.1016/0040-6090%2892%2990301-Q

Pyroelectric and dielectric data are presented for Langmuir-Blodgett multilayers of molecules of a class of organo-ruthenium complexes. A correlation between the average area per molecule and the magnitude of the pyroelectric coefficient is demonstra... Read More about Pyroelectric organo-ruthenium Langmuir-Blodgett films.

A New Mode of Metal Encapsulation (1990)
Journal Article
Slawin, A. M., Bartlett, J. S., Costello, J. F., Mehani, S., Ramdas, S., Slawin, A. M. Z., …Williams, D. J. (1990). A New Mode of Metal Encapsulation. Angewandte Chemie International Edition, 29(12), 1404-1406. https://doi.org/10.1002/anie.199014041

All ten oxygen atoms of the acyclic oligomer 1 c participate in the coordination of Ba2⊕ in the “scorpion” complex 1c · Ba(SCN)2 · Me2CO. The eleventh coordination site is occupied by the acetone molecule. A further characteristic of the complex are... Read More about A New Mode of Metal Encapsulation.