Queen inside of hive back in capital city (6)
I believe the answer is:
vienna
'capital city' is the definition.
(capital of Austria)
'queen inside of hive back' is the wordplay.
'queen' becomes 'anne' (Queen Anne, 18th-century queen).
'inside of' says to take the centre.
'back' says the letters should be written in reverse.
The middle of 'hive' is 'iv'.
'anne'+'iv'='anneiv'
'anneiv' reversed gives 'VIENNA'.
'in' acts as a link.
(Other definitions for vienna that I've seen before include "huge 20 [ULTRAVOX] hit" , "Capital on the Danube Canal" , "Capital city of Austria" , "City of Strauss and the waltz" , "Strauss 'Tales from the . . . . . . Woods'" .)