Zur Umsetzung von Tri(phenylethinyl)arsan und -stiban mit Octacarbonyldicobalt; Kristallstruktur von (Ph– C≡ C)As[(η2-C≡ C – Ph)Co2(CO)6]2 / Reaction of Tri(phenylethynyl)arsane and -stibane with Octacarbonyldicobalt; Crystal Structure of (Ph–C≡C)As[η2-C≡C–Ph)Co2(CO)6]2
1990 ◽
Vol 45
(11)
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pp. 1529-1536
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Keyword(s):
X Ray
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The synthesis of tri(phenylethynyl)arsane (1) and -stibane (7) is discussed. Octacarbonyldicobalt reacts selectively with 1 or 7 to yield the η2-side-on co-ordinated phenylethynyl complexes (Ph–C=C)nE[(η2-C≡C–Ph)Co2(CO)6]3-n (E = As: n = 2: 3, n = 1: 4, n = 0: 5; E = Sb: n = 2: 8; n = 1: 9; n = 0: 10), which contain sterically hindered carbon-cobalt tetrahedrane cluster units. 3 gives upon heating {(Ph–C≡C)2As[(η2-C=C–Ph)Co2(CO)5]}2 (6) a compound containing a six-membered Co2As2C2 ring.All new compounds have been characterized by analytical and spectroscopic data (IR, 1H, 13C NMR), and (Ph –C≡C)As[(η2-C≡C–Ph)Co2(CO)6]2 (4) by X-ray analysis.
2002 ◽
Vol 57
(9)
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pp. 1017-1026
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