Ternary complexes in solution1 with hydrogen phosphate and methyl phosphate as ligands

Extent of intramolecular π stacks in aqueous solution in mixed-ligand copper(II) complexes formed by heteroaromatic amines and the anticancer and antivirally active 9-[2-(phosphonomethoxy)ethyl]guanine (PMEG). A comparison with related acyclic nucleotide analogues

“…H plots, also the data points measured for the corresponding methyl phosphate systems [76] fit, confirming the reliability of the plots.…”

“…Indeed, statistical considerations predict for Δ log K Cu a value of about -0.5 for the coordination of a monodentate ligand to Cu(Arm) 2+ [75]. However, for simple phosph(on)ates Δ log K Cu equals about 0.03 [70,76] Comparing the above with the results listed in column 6 of Table 2 shows that Δ log K Cu has a positive sign and is also larger than expected for all the ternary complexes, indicating that Equilibrium (9a) is shifted towards its right side. One may add that in the Cu(Arm)(PME) complexes, Δ log K Cu being about 0.15 (Table 2, entry 1), the ether oxygen atom (see Fig.…”

Extent of intramolecular stacking interactions in the mixed-ligand complexes formed in aqueous solution by copper(II), 2,2′-bipyridine or 1,10-phenanthroline and 2′-deoxyguanosine 5′-monophosphate †

“…For equations ( 15) and ( 16) only ligands incapable of aromaticring stacking or hydrophobic interactions could be used, i.e., -ribose 5-monophosphate, methylphosphonate and ethylphosphonate; 12 for these log K Cu(arm) Cu(arm)(R-PO 3 ) versus pK H H(R-PO 3 ) correlations the data pairs for the methyl phosphate systems also fit. 41 The reference lines as defined by eqn. ( 14), ( 15) and ( 16) are seen in Fig.…”

Studies on Solvent Sublation of Trace Heavy Metals by Continuous Flow System as Ternary Complexes of 1,10-Phenanthroline and Thiocyanate Ion

“…The structure of ternary metallic complex with 1,10-phenanthroline [27][28][29] and SCN -30-33 was given as one form of follow structures depending on the coordination number of metallic ion 35,36,37,40 : or Generally, these four kinds of analyte elements{Cu(II), Mn(II), Ni(II) and Zn(II)} are known to form 1 : 2 chelate with 1,10-phenanthroline ligand 36,37 mainly, but also 1 : 3 chelates can be formed for Ni(II), 41,45 Zn(II), 42 and Mn(II). 40 An anion, which forms ternary complex, can be bound to the 1,10-phenanthroline chelates additionally depending on the coordination number of metal ion.…”

“…Such phenomena were considered to be due to neutral or positive charge of four or six coordinated complexes. 35,40,[43][44][45] On the other hand, the effective flotation was shown in the addition of cationic CTAB for Mn(II) complex. This is because of high possibility to form the anionic four coordinated complex of Mn(II) with SCN − ion.…”