TY - JOUR
T1 - Reactions of [Os3(CO)10(MeCN)2] with ethynyl thiophenes
T2 - The formation of linked clusters
AU - Ahrens, Birte
AU - Clarke, Lionel P.
AU - Feeder, Neil
AU - Khan, Muhammad S.
AU - Li, Peiyi
AU - Martin, James N.
AU - Raithby, Paul R.
N1 - Funding Information:
We are grateful to the EPSRC for studentships to LPC and JNM, a post doctoral award to N.F. and for a Senior Fellowship to P.R.R. The award of a DAAD grant (Gemeinsames Hochschulsonder-programm II von Bund und Ländern) to B.A. is gratefully acknowledged. We also thank the Sultan Qaboos University (SQU) Research Grant No. IG/SCI/CHEM/02/01 to support M.S.K., and Johnson Matthey plc for the loan of the heavy metal salts.
PY - 2008/7/27
Y1 - 2008/7/27
N2 - The reaction of 2 equiv. of [Os3(CO)10(MeCN)2] with R-C{triple bond, long}C-L-C{triple bond, long}C-R (R = H, L = (C4H2S); R = SiMe3, L = (C4H2S-C4H2S), (C4H2S-C4H2S-C4H2S), (C4H2S)-(C14H8)-(C4H2S)) affords the series of linked clusters [{Os3(CO)10}(HC{triple bond, long}C(C4H2S)C{triple bond, long}CH){Os3(CO)10}] (1), [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S-C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (2), [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S-C4H2S-C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (4) and [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S)-(C14H8)-(C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (6) as the major products. The complexes have been characterised by a range of spectroscopic methods and, in the case of 1 and 2 by single crystal X-ray crystallography. The alkyne groups cap the osmium triangles in the expected μ3-η2-||-bonding mode and each triangle is coordinated by nine terminal and one μ2-carbonyl group. Solution UV-Vis spectra of the complexes were similar to those observed for the free ligands consistent with there being little delocalisation between the cluster units and the thiophene groups.
AB - The reaction of 2 equiv. of [Os3(CO)10(MeCN)2] with R-C{triple bond, long}C-L-C{triple bond, long}C-R (R = H, L = (C4H2S); R = SiMe3, L = (C4H2S-C4H2S), (C4H2S-C4H2S-C4H2S), (C4H2S)-(C14H8)-(C4H2S)) affords the series of linked clusters [{Os3(CO)10}(HC{triple bond, long}C(C4H2S)C{triple bond, long}CH){Os3(CO)10}] (1), [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S-C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (2), [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S-C4H2S-C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (4) and [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S)-(C14H8)-(C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (6) as the major products. The complexes have been characterised by a range of spectroscopic methods and, in the case of 1 and 2 by single crystal X-ray crystallography. The alkyne groups cap the osmium triangles in the expected μ3-η2-||-bonding mode and each triangle is coordinated by nine terminal and one μ2-carbonyl group. Solution UV-Vis spectra of the complexes were similar to those observed for the free ligands consistent with there being little delocalisation between the cluster units and the thiophene groups.
KW - Alkynes
KW - Osmium clusters
KW - Thiophenes
KW - X-ray crystal structures
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U2 - 10.1016/j.ica.2007.12.020
DO - 10.1016/j.ica.2007.12.020
M3 - Article
AN - SCOPUS:46649098488
SN - 0020-1693
VL - 361
SP - 3117
EP - 3124
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
IS - 11
ER -