Assertion: tin | /r/HasProperty | 3 o
Facets:
Source sentences:
text: Diorganotin oxides (R 2 SnO) are polymers except when the organic substituents are very bulky, in which case cyclic trimers or, in the case of R = CH(SiMe 3 ) 2 dimers, with Sn 3 O 3 and Sn 2 O 2 rings.
text: Sn 3 O 4