Systematic studies on pH-dependent transformations of dinuclear vanadium(V)-citrate complexes in aqueous solutions. A perspective relevance to aqueous vanadium(V)-citrate speciation.
作者： M. Kaliva , C.P. Raptopoulou , A. Terzis , A. Salifoglou
DOI: 10.1016/S0162-0134(02)00563-9
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摘要: Abstract Vanadium(V) involvement in interactions with physiological ligands biological media prompted us to delve into the systematic pH-dependent synthesis, spectroscopic characterization, and perusal of chemical properties arising aqueous vanadium(V)–citrate species requisite system. To this end, facile reactions led dinuclear complexes (NH 4 ) [V 2 O (C 6 H 5 7 ]·4H ( 1 ]·6H ). Complex were characterized by elemental analysis, FT-IR X-ray crystallography. crystallizes monoclinic space group C 2/ c a =16.998(5) A, b =16.768(5) =9.546(3) β =105.22(1)°, V =2625(1) A 3 , Z =4. triclinic P =9.795(4) =9.942(4) =9.126(3) α =90.32(1)°, =111.69(1)°, γ =108.67(1)°, =774.5(5) =1. The structures consistent presence core, which citrate differing protonation state bound coordination mode past observations. Ultimately, pH dependent transformations series three complexes, ]·2H ), all isolated at values from 7.5, explored revealed an important interconnection among species. Collectively, emerged as determining factor structural attributes adjoining acid–base chemistry unfolding around stable core. results point participation speciation, may relate site-specific protonations–deprotonations on potential processes involving vanadium(V) ligand targets.
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sci-hub.se 参考文章(50)
K H W Lau, J R Farley, D J Baylink, Phosphotyrosyl protein phosphatases. Biochemical Journal. ,vol. 257, pp. 23- 36 ,(1989) , 10.1042/BJ2570023
Zhao-Hui Zhou, Hui Zhang, Ya-Qi Jiang, Dong-Hai Lin, Hui-Lin Wan, Khi-Rui Tsai, Complexation between vanadium(V) and citrate: spectroscopic and structural characterization of a dinuclear vanadium(V) complex Transition Metal Chemistry. ,vol. 24, pp. 605- 609 ,(1999) , 10.1023/A:1006947218366
Paul G. Drake, Barry I. Posner, Insulin receptor-associated protein tyrosine phosphatase(s): Role in insulin action Molecular and Cellular Biochemistry. ,vol. 182, pp. 79- 89 ,(1998) , 10.1023/A:1006808100755
Nikola Vuleti?, Cirila Djordjevi?, Oxodiperoxovanadate(V) complexes with bidentate ligands Journal of The Chemical Society-dalton Transactions. pp. 1137- 1141 ,(1973) , 10.1039/DT9730001137
M. Tsaramyrsi, M. Kaliva, A. Salifoglou, C. P. Raptopoulou, A. Terzis, V. Tangoulis, J. Giapintzakis, Vanadium(IV)-citrate complex interconversions in aqueous solutions. A pH-dependent synthetic, structural, spectroscopic, and magnetic study. Inorganic Chemistry. ,vol. 40, pp. 5772- 5779 ,(2001) , 10.1021/IC010276N
Murugesan Velayutham, Babu Varghese, Sankaran Subramanian, Magneto-Structural Correlation Studies of A Ferromagnetically Coupled Dinuclear Vanadium(IV) Complex. Single-Crystal EPR Study. Inorganic Chemistry. ,vol. 37, pp. 1336- 1340 ,(1998) , 10.1021/IC9707467
Jon Zubieta, Clusters and Solid Phases of the Oxovanadium–Phosphate and – Organophosphonate Systems Comments on Inorganic Chemistry. ,vol. 16, pp. 153- 183 ,(1994) , 10.1080/02603599408035857
P G Drake, A P Bevan, J W Burgess, J J Bergeron, B I Posner, A role for tyrosine phosphorylation in both activation and inhibition of the insulin receptor tyrosine kinase in vivo. Endocrinology. ,vol. 137, pp. 4960- 4968 ,(1996) , 10.1210/ENDO.137.11.8895369
J. W. Eriksson, P. L�nnroth, B. I. Posner, A. Shaver, C. Wesslau, U. P. G. Smith, A stable peroxovanadium compound with insulin-like action in human fat cells Diabetologia. ,vol. 39, pp. 235- 242 ,(1996) , 10.1007/BF00403968
Karin L. C. Grönberg, Carol A. Gormal, Marcus C. Durrant, Barry E. Smith, Richard A. Henderson, Why R-Homocitrate Is Essential to the Reactivity of FeMo-Cofactor of Nitrogenase: Studies on NifV--Extracted FeMo-Cofactor Journal of the American Chemical Society. ,vol. 120, pp. 10613- 10621 ,(1998) , 10.1021/JA981832O