“…Compounds of selenite have been extensively studied due to the stereochemically active lone pairs at the Se centers. 1–4 The combination of the inherently asymmetric (SeO 3 ) 2− , (HSeO 3 ) − and (Se 2 O 5 ) 2− oxoanion groups with various transition metals will result in a rich structural chemistry in transition metal selenite, 5–7 such as MnSeO 3 ·H 2 O, 8 ZnSe–Se 2 O 5 , 9 Nd(SeO 3 )(HSeO 3 ), 7 NiH 2 SeO 4 , 10 and Sc(HSeO 3 ) 3 . 11 Under the influence of lone electron pairs, some of them exhibit two-dimensional magnetoresistive frustration.…”