Synthesis and Study of Complex Formation of Tri- and Tetranitro-9-fluorenone Oximes with 3d Metals: Crystal and Molecular Structure of the 1:1 Solvate of 2,4,5,7-Tetranitro-9-fluorenone Oxime with Acetonitrile

The complexes M(L-1,L- 2)(2) center dot nH(2)O, where M = Co(II), Ni(II), Cu(II), and Zn; n = 2 and 3, were synthesized by the reaction of Co(II), Ni(II), Cu(II), and Zn(II) chlorides with 2,4,7-trinitro-9-fluorenone oxime (HL1) and 2,4,5,7-tetranitro-9-fluorenone oxime (HL2) and identified. It was shown that HL1, 2 were coordinated by metal cations in the anionic form in a 2:1 ratio. A single crystal of the solvate of HL2 with acetonitrile (1:1) HL2 center dot NCCH3 was isolated, and its crystal structure was determined. The spectral characteristics were determined, and the acidity constant of HL1 was calculated. The structures for the synthesized complexes were proposed.