Showing papers by "Stephen Barlow published in 1997"
TL;DR: In this article, the walls of the mesoporous silicate MCM-41 can be functionalised with 1,1′-ferrocenyl end groups by reaction with an alkane solution of======(1,1')-ferrocenediyl)dimethylsilane; the product is studied by======solid state NMR and EXAFS spectroscopies.
44 citations
TL;DR: The diiron complexes exhibit very strong electron-electron coupling between iron centres as evidenced by a 810 mV separation between the 0/+====== and +/2+ redox waves as discussed by the authors.
16 citations
TL;DR: The crystal and molecular structure of [{Cu(pmdien)F(H2O)}2][BF4]21 (n, n, N′, N″,N″-pentamethyldiethylenetriamine) has been determined.
Abstract: The crystal and molecular structure of [{Cu(pmdien)F(H2O)}2][BF4]21 (pmdien = N,N,N′,N″,N″-pentamethyldiethylenetriamine) has been determined. The cation exists in the solid state as a unique dimer, held together by O–H· · ·F hydrogen-bonding interactions [O· · ·F 2.567(2), O–H 0.83(3), F· · ·H 1.74(3) A, F· · ·H–O 178.5(23)°]. The O· · ·F separation is the shortest ligand fluoride–ligand water hydrogen-bonding interaction in any copper(II) complex. The copper atom is five-co-ordinate and has a square-based pyramidal geometry comprising equatorially located pmdien (mean Cu–N 2.052 A), and fluoride [Cu–F 1.888(1) A] and axially located water [Cu–O 2.211(1) A].
12 citations
TL;DR: In this article, a new fused-ring compound 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene (H2L1) has been synthesized from p-xylene.
Abstract: A new fused-ring compound 1,2,3,4,5,6,7,8-octamethyl-1,5-dihydro-s-indacene (H2L1) has been synthesized from p-xylene. Three transition-metal derivatives [Mn(η5-HL1)(CO)3], [Rh(η5-HL1)(η-C5Me5)]+[SbF6]− and [Cr(η6-H2L1)(CO)3] have been characterised: spectroscopic and crystallographic data for these compounds show the ligand system is strongly electron donating. Although H2L1 is readily deprotonated to the monoanion by potassium metal or potassium hydride, surprisingly we have been unable to form (L1)2. The crystal structure of [K]+[HL1]−·18-crown-6 reveals the potassium ion to be sandwiched between the crown ether (1,4,7,10,13,16-hexaoxacyclooctadecane) and the (HL1)− anion.
8 citations