"Aminoalkyl-1,1-bis(phosphinic acids): Stability, Acid-Base, and Coordination Properties" . . "DE - Spolkov\u00E1 republika N\u011Bmecko" . . . "acidity; stability constants; hydrolytic stability; phosphinic acids; O ligands; ligand design"@en . . "European Journal of Inorganic Chemistry" . "Kub\u00ED\u010Dek, Vojt\u011Bch" . "I, P(GPP207/10/P153), P(LD13012), S, Z(MSM0021620857)" . . "[FC3D98897E94]" . . "1434-1948" . "Hermann, Petr" . . . . . "Luke\u0161, Ivan" . . . "Aminoalkyl-1,1-bis(phosphinic acids): Stability, Acid-Base, and Coordination Properties"@en . . "6"^^ . . . . . "RIV/00216208:11310/14:10281898!RIV15-MSM-11310___" . . . "Proch\u00E1zkov\u00E1, So\u0148a" . "Four geminal bis(phosphinic acids), namely, aminomethyl-bis(H-phosphinic acid) (H2L1) and 4-aminobutyl-1-hydroxy-1,1-bis(R-phosphinic acid) with R = H (H2L2), Me (H2L3) and CH2CH2COOH (H4L4), were studied. Their acid-base properties and coordination ability towards Cu2+, Ni2+ and Zn2+ ions were studied by potentiometry, UV/Vis spectroscopy and NMR spectroscopy. The amine group in H2L1 has a lower protonation constant (log K-a = 6.79) than those found for other studied bisphosphinates (logK(a) = 10.75-11.05) with distant amine groups. The structure of [Ca(H2L2-O,O')(HL2-O,O')]Cl revealed an octahedral arrangement of the metal coordination sphere and a linear polymeric structure, which forms through eight-membered Ca(-O-P-O-)(2)Ca rings. The structure of [Cu(HL3-O,O')(2)(H2O)]center dot 5H(2)O shows two chelating bisphosphinate groups in an equatorial O-4 environment. The structure of [Cu(H0.5L3-O,O')(NO3)(0.5)]center dot 2.25H(2)O shows two different coordination environments, one is an elongated tetragonal pyramid, and the other is a trigonal bipyramid with a bidentate nitrate ion." . "Aminoalkyl-1,1-bis(phosphinic acids): Stability, Acid-Base, and Coordination Properties"@en . . "6"^^ . "Neuveden" . "http://dx.doi.org/10.1002/ejic.201402420" . . . "26" . . "10.1002/ejic.201402420" . . "Kotek, Jan" . "11310" . "12"^^ . "2334" . "RIV/00216208:11310/14:10281898" . . . "Four geminal bis(phosphinic acids), namely, aminomethyl-bis(H-phosphinic acid) (H2L1) and 4-aminobutyl-1-hydroxy-1,1-bis(R-phosphinic acid) with R = H (H2L2), Me (H2L3) and CH2CH2COOH (H4L4), were studied. Their acid-base properties and coordination ability towards Cu2+, Ni2+ and Zn2+ ions were studied by potentiometry, UV/Vis spectroscopy and NMR spectroscopy. The amine group in H2L1 has a lower protonation constant (log K-a = 6.79) than those found for other studied bisphosphinates (logK(a) = 10.75-11.05) with distant amine groups. The structure of [Ca(H2L2-O,O')(HL2-O,O')]Cl revealed an octahedral arrangement of the metal coordination sphere and a linear polymeric structure, which forms through eight-membered Ca(-O-P-O-)(2)Ca rings. The structure of [Cu(HL3-O,O')(2)(H2O)]center dot 5H(2)O shows two chelating bisphosphinate groups in an equatorial O-4 environment. The structure of [Cu(H0.5L3-O,O')(NO3)(0.5)]center dot 2.25H(2)O shows two different coordination environments, one is an elongated tetragonal pyramid, and the other is a trigonal bipyramid with a bidentate nitrate ion."@en . "Aminoalkyl-1,1-bis(phosphinic acids): Stability, Acid-Base, and Coordination Properties" . . . "David, Tom\u00E1\u0161" . "000342825900018" .