9551
Contrary to the expectation of relatively weak basis set dependence for DFT , the basis set effects are large , for example , more than 10 kcal mol ( - 1 ) difference from converged basis for the activation energy with " small " basis sets ( DZ / 6 - 31G * * for Ir / other atoms , or SVP ) and still more than 6 kcal mol ( - 1 ) for def2 - TZVPP / 6 - 31G * * .
 Chemical: Ir
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Ir