The chiastic analysis of 2 Corinthians 5:21 and surrounding verses is the subject of a 2014 Famous Fox publication which is made available in its entirety below. I hope you will find it interesting!
As a result of the structural (largely chiastic) analysis, both of the verse itself and of the surrounding verses, the book supports N. T. Wright’s (controversial!) interpretation of 2 Cor. 5:21. The book also attempts briefly to discuss some aspects of the New Perspective on Paul – particularly those relating to the righteousness of God – and to set the structural analysis in the context of the views of John Piper and N. T. Wright regarding this vital topic.
The book can be accessed by clicking on the links below.
All comments, advice and corrections gratefully received! (Some of the structural suggestions are in this book are somewhat speculative, and rather unorthodox, so please feel free to criticise!) S.F.