Crystal structure and properties of [Cu(sac)2(py)3], a new example of a mononuclear complex with both N‐ and O‐bonded saccharinate ligands

The crystal structure of the title complex has been determined by single X‐ray diffraction methods and refined to an R‐value of 0.0543. It crystallizes in the monoclinic P2₁/a space group with a = 21.1231(9), b = 9.4523(4), c = 16.1874(7) Å, β = 107.3706(3)° and Z = 4. The compound represents only the second known example of a simple mononuclear metal complex containing simultaneously N‐ and O‐bonded saccharinato ligands. Its infrared spectrum and thermal behavior are also briefly discussed.