checkCIF procedure

PROC-NAME: CHEMS02 Type_1

PURPOSE: To check that the stated category _publ_requested_category is consistent with the chemical formula of the compound.

PROCEDURE:

1. If compound contains no C then inorganic.
   
2. If compound contains C but no H, probably inorganic.
   
3. If compound contains C, H and a metal then metalorganic.
   
4. If compound contains C, H and no metal then organic.
   

IF the _publ_requested_category doesn't match the deduced category then issue a General ALERT for author to cross check
   "Please check that you have entered the correct _publ_requested_category classification of your compound; FI or CI for inorganic; FM or CM for metal-organic; FO or CO for organic."