rental income tax in to pension?

i am looking at a liability of around 1800 euro for rental income for 2012 and another 1800 preliminary tax for this year, rather than pay that money to revenue would it be worth my while putting it in to a pension scheme/fund?
i'm 40 and i already pay superannuation and i have a (small) avc plan, is the only option open to me to pay a lump sum in to my avc or are there other options?
i know very little about pensions so i would appreciate any advice..

Rental income itself is not pensionable. Only your earned income is pensionable. However, if you're not claiming your full allowances of tax relief in respect of your earned income, you can still make an extra AVC against your earned income which would have the same effect in terms of reducing your tax bill.

Assuming that you have one source of earned income, you can either contribute to the pension scheme's AVC plan or choose your own AVC PRSA from [broken link removed].

good to know,thought i could only top up my existing avc.
thanks for the reply.