Assertion: boron's compound | /r/HasProperty | tetrahedral or trigonal planar
Facets:
value: usually
type: DEGREE
Source sentences:
text: Organoboron(III) compounds are usually tetrahedral or trigonal planar, for example, tetraphenylborate, [B(C 6 H 5 ) 4 ]− vs. triphenylborane, B(C 6 H 5 ) 3 .