In the middle of Spain Siemens produces chemicals (6)

I believe the answer is:

amides

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'chemicals' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'in the middle of spain siemens' is the wordplay.
'in the middle of' becomes 'amid' (I've seen this before).
'spain' becomes 'e' (abbreviation for Espana).
'siemens' becomes 'S' (synonyms).
'amid'+'e'+'s'='AMIDES'

'produces' acts as a link.

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I've seen this clue in The Independent.

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