66561-63-5Relevant academic research and scientific papers
Reactions of Manganese Atoms with Cyclic Dienes and Cycloheptatriene: Crystal Structure of Carbonylbis(1-4-η-cyclohexa-1,3-diene)manganese
Kuendig, E. Peter,Timms, Peter L.,Kelly, Barbara A.,Woodward, Peter
, p. 901 - 904 (2007/10/02)
Condensation of manganese atoms with cyclopentadiene, cyclohexa-1,3-diene, cycloheptatriene, and cyclo-octa-1,3-diene at -196 deg C, followed by warming to 20 deg C in the presence of CO, has given organomanganese carbonyl complexes in yields of 5-10 percent based on Mn.The new compounds 4-C6H8)2(CO)>, 4-C7H8)2(CO)>, and 3-C8H13)(CO)4> have been isolated.A single-crystal X-ray diffraction study of 4-C6H8)2(CO)> shows that the manganese atom adopts a square-pyramidal configuration with the carbonyl ligand in the axial position.The two hexadiene rings are each folded equatorially away from the Mn atom and the moleule has C2v symmetry.As in other diene complexes, the two inner C atoms are slightly closer to the metal than are the outer C atoms .The crystals are orthorhombic, space group P212121 (no. 19) with Z = 4 in a unit cell with a = 8.570(1), b = 17.220(1), and c = 7.562(1) Angstroem.The structure has been refined to R 0.045.
