The two books of Chronicles are the very last books of the Hebrew Old Testament. Originally they formed one single book as the books of Samuel and Kings.
The division of the books originates from the translation of the Septuagint, which is the Greek version of the OT. From then on the division was taken over into the translations of the Holy Scriptures until finally it was taken over into the Hebrew Bible (firstly by Daniel Bomberg in 1517 AC).
The kingdoms of David and Solomon as well as their successors are the main subject of the Chronicles. Both David and Solomon form a joint picture of Christ as rejected, suffering, glorified and reigning king.
Therefore David and Solomon’s trespasses (David’s adultery with Bathsheba and his murdering Uriah and Solomon’s idolatry) are not mentioned.
The books of Kings give more moral teachings and stress the human responsibility. The Chronicles however contain more typical teachings in connection with the grace of God.