CRYSTAL STRUCTURE OF DI-Ој-AMIDO-bis[DIAMMINEPLATINUM(II)] NITRATE
Q.-S. Ye1, M.-J. Xie2, X.-N. Li3, W.-P. Liu1, J. Yu1, Q.-W. Chang1, J. Jiang1, C.-X. Yan1, J. Li1
1Kunming Institute of Precious Metals, Kunming 650106, P. R. China
liuweiping0917@126.com
2Yunnan University, Kunming 650031, P. R. China
3Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, P. R. China
Ключевые слова: platinum, amide, ammine, crystal structure, synthesis
Страницы: 882-885
Аннотация
Di-m-amido-bis[diammineplatinum(II)] nitrate (1) was synthesized as a byproduct during preparation of tetraammineplatinum(II) nitrate. One possible pathway to produce 1 is that [(H3N)2Pt(m-OH)2Pt(NH3)2](NO3)2, a well-known complex forming on treatment of cis -Pt(NH3)2I2 with AgNO3, reacts with aqueous ammonia. The other possible pathway involves deprotonation of [Pt(NH3)4](NO3)2 to form monomeric Pt(NH3)3(NH2)NO3 followed by elimination of NH3. Crystals of 1 (from water) are monoclinic ( C 2/ c ) with a = 16.834(2) Å, b = 10.573(1) Å, c = 7.415(1) Å, b = 114.846(1)°, and Z = 4. The cationic portion consists of two symmetrical square-planar Pt centers with the inversion center at the midpoint of the Pt(1)⋯Pt(1A) vector. The Pt(II) ion is coordinated by four N atoms from two ammonia molecules and two bridging amido groups affording a slightly distorted square. The molecules are stacked in such a way that the planes of coordination squares turn out to be parallel to each other with a distance of 3.501 Å. Intermolecular Pt-H interaction between the m-NH2 hydrogens and the platinum(II) centers of the adjacent molecule are observed.
DOI: 10.15372/JSC20160435 |
