19229-79-9Relevant articles and documents
Establishment of the light-absorption ratio variation approach and application to determination of CO(II) in the ng ml-1 level and novel characterization of Co(II) and Zn(II) complexes with 1,5-di(2-hydroxy-5- sulfophenyl)-3-cyanoformazan
Gao, Hong-Wen,Wang, Hong-Yan,Zhang, Sheng-Yi,Zhao, Jian-Fu
, p. 1649 - 1656 (2003)
The light-absorption ratio variation approach (LARVA) has been established and applied to the determination of Co on the ng ml-1 level with 1, 5-di(2-hydroxy-5-sulfophenyl)-3-cyanoformazan (DSPCF) at pH 9.33. Competitive replacement complexatio
Russell, A. S.,Evans, D. C.
, p. 2221 - 2230 (1925)
Liebhafsky, H. A.
, p. 852 - 856 (1942)
Copper(II) Complexes of Substitued Macrobicyclic Hexaamines: Combined Trigonal and Tetragonal Distortions
Bernhardt, Paul V.,Bramley, Richard,Engelhardt, Lutz M.,Harrowfield, Jack M.,Hockless, David C. R.,et al.
, p. 3589 - 3599 (1995)
The hexaamine complexes [M{(NH3)2sar}](4+) and [M{(NMe3)2sar}](4+) (M =Cu(II), Zn(II); sar = 3,6,10,13,16,19-hexaazabicyclo[6.6.6]icosane) have been synthetized and characterized both spectroscopically and structurally. X-ray crystal structural analyses of [Cu{(NH3)2sar}](NO3)4*H2O (monoclinic, P21, a 12.311(3) ?, b 12.338(4) ?, c 8.574 ?, β 93.91(3)°, Z = 2), [Zn{(NH3)2sar}](NO3)4*H2O (monoclinic, P21,a 12.365(4) ?, b 12.396(7) ?, c 8.587(4) ?, β 94.13(3)°, Z = 2), [Cu{(NMe3)2sar}](ClO4)4 (hexagonal P6-2C, a 8.689(2) ?, c 27.927(2) ?, Z = 2), and [Zn{(NMe3)2sar}](ClO4)4 (hexagonal,P6-2C, a 8.669(5) ?, c 27.997 ?, Z = 2) are reported. Visible-near-infrared absorption, circular dichroism, magnetic circular dichroism, and electron paramagnetic resonance spectroscopic studies reveal distorted CuN6 chromophores. Trigonal distortions arise from steric requirements of the ligands, whereas tetragonal distortions result from Jahn-Teller coupling in the Cu(II) complexes. X-ray crystallographic studies of these copper(II) complexes revealed partially averaged ([Cu{(NH3)2sar}](4+)) and completely averaged ([Cu{(NMe3)2sar}](4+)) geometries as a result of both static disorder and dynamic processes throughout each lattice. Partial resolutions of [Cu{(NMe3)2sar}](4+) into its enantiomeric forms was achieved to give the first stable chiral molecule where Cu(II) is the stereogenic atom. In the absence of Jahn-Teller coupling characteristic of their Cu(II) relatives, the analogous Zn(II) complexes exhibited high-symmetry structures both in solution and in the solid state.
Experimental and quantum-chemical studies of anabasine complexes with copper(II) and zinc(II) ions
Bregier-Jarz?bowska, Romualda,Malczewska-Jaskó?a, Karolina,Jankowski, Wojciech,Jasiewicz, Beata,Hoffmann, Marcin,G?sowska, Anna,Jastrz?b, Renata
, p. 841 - 848 (2015)
Anabasine copper(II) and zinc(II) complexes have been studied using experimental methods and quantum-chemical studies. Preferred coordination centers and possible structures of the complexes have been determined. It has been revealed, that the main coordi
DEVICES FOR TREATMENT OF SKIN DISORDERS
-
, (2011/06/25)
The present invention discloses a layer of fabrics having antibacterial/microbe-resistant properties that are designed for contacting with the human skin. The fabric layer can be disposed, directly or indirectly, onto a pillowcase, pillow, comforter, comforter cover, head support, bed cloth, sleeping bag, mattress, cushion, blanket, and garment.