Two ‘hollow’ B-site deficient perovskites, (TzH)11(H3PO2)Sn6I23 and (TzH)3Sn2I7 (TzH+ = 1,2,4-triazolium, H3PO2 = hypohosphorous acid), have been prepared. (TzH)11(H3PO2)Sn6I23 is the first example of a 2D layered structure of this type. Leaving the same reaction mixture for an extended time also affords the 3D derivative (TzH)3Sn2I7.
J. A. McNulty, A. M. Z. Slawin and P. Lightfoot, Dalton Trans., 2020, 49, 15171 DOI: 10.1039/D0DT03449E
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