Showing papers by "Milan Melnik published in 2018"
TL;DR: In this article, the authors classified and analyzed structural parameters of over seventy examples of monomeric PtP2X2 (X = OL, NL, CN or BL) derivatives in which P donor ligands are organodiphosphines.
Abstract: In this review are classified and analyzed structural parameters of over seventy examples of monomeric PtP2X2 (X = OL, NL, CN or BL) derivatives in which P donor ligands are organodiphosphines. These complexes crystallize in four crystal systems: tetragonal (x1), triclinic (x11), orthorhombic (x19) and monoclinic (x40). The complexes were divided into the two groups: Pt(η2-P2L)(XL)2 (X = O, N, CN or B) and Pt(η2-P2L)(η2-X2L) (X = O or N). The chelating ligands create wide of metallocyclic rings and the effects of both steric and electronic factors influence on the values of L-Pt-L bite angles. The some cooperative effects were found and are discussed with trans-influence of the respective donor atoms.
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TL;DR: In this article, the structural parameters of non-transition metal derivatives are analyzed in terms of the coordination with the platinum and the M atoms and correlations are drawn among the metal atoms, donor atoms, bond lengths and bond angles.
Abstract: Abstract An analysis of the structural parameters of PtM, Pt2M, PtM2 and PtMM′ (M = non-transition metals) derivatives shows that each complex contains two crystallographically independent molecules within the same crystal. The respective molecules differ by the degrees of distortion and exemplify the distortion isomerism. These are discussed in terms of the coordination with the platinum and the M atoms and the correlations are drawn among the metal atoms, donor atoms, bond lengths and bond angles. A wide variety of non-transition metals (Sn, Ga, In, Tl, Zn, Cd, Hg, Sb) exist, among which the most prevalent is Sn.
TL;DR: This manuscript summarizes and analyzes X-ray data of monomeric cis-PtP2CCl derivatives, which exist in two isomeric forms, of the distortion isomer type.
Abstract: This manuscript summarizes and analyzes X-ray data of monomeric cis-PtP2CCl derivatives. These complexes crystallize in the following crystal systems: tetragonal, P42/n (3), triclinic, Pī (10), orthorhombic, P212121 (prevails)(16), and monoclinic, P21/c (prevails) (36) examples. There are three sub-groups of the respective complexes: Pt(η1-PL)2(η1-CL)(η1-Cl); Pt(η2-P2L)(η1-CL)(η1-Cl) and Pt(η1-PL)(η2-P,CL)(η1-Cl). The chelating P,P-donor ligands form: four-(POP, PCP), five-(PC2P), six-(PC3P, PCNCP), seven-(PC4P) and even ten-(PCNCNCNCP) membered rings. The chelating P.C-donor ligands create three-(PC), four-(PCC) and five-(PC2C) membered rings. The mean Pt-L bond distance elongates in the sequence: 2.10 A (C, trans to P) < 2.222 A (P, trans to Cl) < 2.312 A (P, trans to C) < 2.360 A (Cl, trans to P). There are examples which exist in two isomeric forms, of the distortion isomer type.