Charge density studies of single and transient (single to double) boron–oxygen bonds in (NH₄)₂B₄O₅(OH)₄·2H₂O

Abstract

The H4B4O92- ion which makes up the (NH4)2B4O5(OH)4 ·2H2O crystal structure has two types of boron-oxygen bond, i.e. single B−O bonds and an intermediate between single and double B=O bonds....