Synthesis of heteroleptic violurato complexes of co<sup>III</sup>. Influence of the co-ordinated ligands on the protonation–deprotonation reactions of dihydrogenviolurate anion. Crystal structure of potassium dihydrogenviolurato(nitrilotriacetato)cobaltate(<scp>III</scp>) dihydrate, K[Co(H<sub>2</sub>vi)(nta)]·2H<sub>2</sub>O
作者:Fidel Almazán、Enrique García-España、Miquel Mollar、Francesc Lloret、Miguel Julve、Juan Faus、Xavier Solans、Neus Alins
DOI:10.1039/dt9900002565
日期:——
Six cobalt(III) heteroleptic violurato complexes of formula [Co(Hvi)(trien)]Cl·4H2O, K[Co(H2vi)(nta)]·2H2O, [Co(Hvi)(phen)2]NO3·5H2O, [Co(H2vi)2(phen)]NO3·4.5H2O, Na[Co(Hvi)2(phen)]·8H2O, and [Co(H2vi)(salen)]·4H2O [H3vi, trien, nta, phen, and salen being violuric acid (1H, 3H-pyrimidine-2,4,5,6-tetrone 5-oxime, triethylenetetramine, nitrilotriacetate(3–), 1,10-phenanthroline, and N,N′-ethylenebis
六种钴(III)式的杂violurato络合物[CO(HVI)(三烯)]氯·4H 2 O,K [CO(H 2 ⅵ)(NTA)]·2H 2 O,[CO(HVI)(phen)的2 ] NO 3 ·5H 2 O,[Co(H 2 vi)2(phen)] NO 3 ·4.5H 2 O,Na [Co(Hvi)2(phen)]·8H 2 O和[Co(H 2 vi)(salen)]·4H 2 O [H 3 vi,trien,nta,phen和salen为紫草酸(1 H,3 H-嘧啶-2,4,5,6-四氟5-肟,三亚乙基四胺,次氮基三乙酸酯(3-),1,10-菲咯啉和N,N'-亚乙基双(水杨亚胺基)(2-)]已经合成。已通过电位测定法确定了这些复合物中的紫罗兰素配体的质子化和去质子常数,并分析了不同配位配体对其的影响。通过直接方法解决了K [Co(H 2 vi)(nta)]·2H 2 O的晶体结构。K [Co(H