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Reaction of Spiro[2.4]hepta-4,6-diene with Molybdenum(II) Indenyl Compounds: Effects of Substitution in the Indenyl Ligand
Authors: Honzíček Jan | Romao Carlos | Calhorda Maria | Mukhopadhyay Abhik | Vinklárek Jaromír | Padělková Zdeňka
Year: 2011
Type of publication: článek v odborném periodiku
Name of source: Organometallics
Publisher name: American Chemical Society
Place: Washington
Page from-to: 714-722
Titles:
Language Name Abstract Keywords
cze Reakce spiro[2.4]hepta-4,6-dienu s indenylovými sloučeninami molybdenu: efekt substituce na indenylovém ligandu Indenylové sloučeniny molybdenu [(Ind)Mo(CO)2(NCMe)2][BF4] byly připraveny a byla studována jejich reaktivita se spiro[2.4]hepta-4,6-dienem. Bylo pozorováno, že otvírání kruhu spiro[2.4]hepta-4,6-dienu může být blokováno substitucí na indenylovém kruhu. Sloučeniny substituované v pozici 2 [(C9H6Me)Mo(CO)2(NCMe)2][BF4] a 1,3-disubstituované sloučeniny [(C9H5tBu2)Mo(CO)2(NCMe)2][BF4] netvoří obvyklý ansa-komplex, ale sloučeninu s 4-vázaným spiro[2.4]hepta-4,6-dieneem [(Ind)(C5H4(CH2)2)Mo(CO)2][BF4]. Použití 1-substituovaných sloučenina [(C9H6R)Mo(CO)2(NCMe)2][BF4] nebo sloučenin s méně stericky náročnými substituenty v pozicích 1 a 3 [(C9H5Ph2)Mo(CO)2(NCMe)2][BF4] neblokuje otvírání kruhu. Tyto sloučeniny pozkytují ansa-molybdenoceny [(Ind)(C5H4CH2CH2)Mo(CO)][BF4] podobně nesubstituovaný analog. molybdenocen;metallocen
eng Reaction of Spiro[2.4]hepta-4,6-diene with Molybdenum(II) Indenyl Compounds: Effects of Substitution in the Indenyl Ligand The series of molybdenum indenyl compounds [(Ind)Mo(CO)2(NCMe)2][BF4] was prepared, and their reactivity toward spiro[2.4]hepta-4,6-diene was studied. It was observed that the spiro[2.4]hepta-4,6-diene ring opening could be blocked through substitution in the indenyl ring. Hence, the 2-substituted compound [(C9H6Me)Mo(CO)2(NCMe)2][BF4] and 1,3-disubstituted compound [(C9H5tBu2)Mo(CO)2(NCMe)2][BF4] do not produce the usual ansa-compounds but the compounds with 4-bonded spiro[2.4]hepta-4,6-diene [(Ind)(C5H4(CH2)2)Mo(CO)2][BF4]. The use of 1-substituted compounds [(C9H6R)Mo(CO)2(NCMe)2][BF4] or compounds with less sterically demanding substituents in the 1,3-positions [(C9H5Ph2)Mo(CO)2(NCMe)2][BF4] does not block the ring-opening reaction. These compounds give ansa-molybdenocenes [(Ind)(C5H4CH2CH2)Mo(CO)][BF4] in a manner similar to that for the unsubstituted analogue. molybdenocene;metallocene

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