کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1325851 | 977406 | 2006 | 5 صفحه PDF | دانلود رایگان |
The 8,9′-[closo-{3-Co(η5-C5H5)-1,2-C2B9H10}]2 (1) species, in which two large closo-CoC2B9 sub-clusters are connected by a B–B bond, is unexpectedly obtained from the reaction of closo-[3-Co(η5-C5H5)-1,2-C2B9H11] with sulfur in the presence of aluminium chloride under reflux conditions. The solid state conformation of 1 seems to be the result of a pair of intramolecular C–H⋯H–B dihydrogen bonds between the protonic H atoms of the C5H5 fragment of a sub-cluster and the hydridic H atoms of the C2B9H11 fragment in the other sub-cluster in 1.
The first example of a boron–boron linked large metallacarborane cluster, 8,9′-[closo-{3-Co(η5-C5H5)-1,2-C2B9H10}]2 (1), has been characterized by single crystal X-ray diffraction analysis and NMR spectroscopy. The solid state conformation of 1 seems to be the result of a pair of intramolecular C–H⋯H–B dihydrogen bonds between the protonic H atoms of the C5H5 fragment of a sub-cluster and the hydridic H atoms of the C2B9H10 fragment in the other sub-cluster in 1.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 691, Issue 16, 1 August 2006, Pages 3472–3476