Die Molekül‐ und Kristallstrukturen von (η 5 ‐Cyclopentadienyl)bis‐(triphenylphosphan)cobalt(I)–(Hexan/Toluol) (2/1), (η 5 ‐Cyclopentadienyl)‐{1,1′‐[(1,2‐η)‐ethin‐1,2‐diyl]bis(benzol)}(triphenylphosphan)cobalt(I) und (η 5 ‐Cyclopentadienyl)(1,2,3,4‐tetraphenyl‐buta‐1,3‐dien‐1,4‐diyl)(triphenyl‐phosphan)cobalt(I)

The Molecular and Crystal Structures of (η 5 ‐Cyclopentadienyl)bis‐(triphenylphosphane)cobalt(I)–(hexane/toluene) (2/1), (η 5 ‐Cyclopentadienyl)‐{1,1′‐[(1,2‐η)‐ethyne‐1,2‐diyl]bis(benzene)}(triphenylphosphane)cobalt(I), and (η 5 ‐Cyclopentadienyl)(1,2,3,4‐tetraphenyl‐buta‐1,3‐diene‐1,4‐diyl)(triphenyl‐phosphane)cobalt(I) The molecular and crystal structures of (η 5 ‐cyclopentadienyl)bis(triphenylphosphane)cobalt(I)–(hexane/toluene) (2/1) CpCo(PPh 3 ) 2 ·0.5 (C 6 H 14 /C 7 H 8 ), (η 5 ‐cyclopentadienyl){1,1′‐[(1,2‐η)‐ethyne‐1,2‐diyl]bis(benzene)}(triphenylphosphane)cobalt(I) CpCo(PPh 3 )(PhC≡CPh), and (η 5 ‐cyclopentadienyl)(1,2,3,4‐tetraphenyl‐buta‐1,3‐diene‐1,4‐diyl)(triphenylphosphane)cobalt(I) CpCo(PPh 3 )C 4 Ph 4 were determined. Their NMR, IR, and UV‐VIS data and a modified preparation of CpCo(PPh 3 ) 2 ·0.5 (C 6 H 14 /C 7 H 8 ) are also presented.