11529
In an attempt to simulate the complexes in an aqueous environment , water molecules were added explicitly to complete the coordination sphere of the metal cations , and the corresponding metal - ion affinities were calculated to study the effect of microhydration .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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