ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Directed Synthesis of Sulfinato-O and -S Complexes of some Transition Metals, VII1) Linkage Isomerism in Sulfinato Complexes of Copper(II)Fourfold configurated bis(p-toluenesulfinato-O)-2,2′-bipyridylcopper(II) (2) and pseudooctahedrally bis(p-toluenesulfinato-O)bis(2,2′ bipyridyl)copper(II) (3O) are obtained by reaction of bis(p-toluenesulfinato-O,O′)diaquacopper(II) (1) with 2,2′-bipyridyl in acetone and in water according to equations (2) and (3), respectively. 3O can also be prepared from 2 and 2,2′-bipyridyl in water according to equation (6); in acetone or THF equation (6) is reversible. On the contrary the addition of 2,2′-bipyridyl to 1 in pyridine forms bis(p-toluenesulfinato-S)bis(2,2′-bipyridyl)copper(II) (3S) according to equation (4), being linkage isomerie with 3O. Finally in pyridine at 115° the O-isomer 3O is converted irreversibly into the S-isomer 3S. The newly prepared compounds are characterized on the basis of their i.r. and electronic spectra as well as by magnetochemical investigations.
Notes:
Durch Einwirkung von 2,2′-Bipyridyl auf Bis(p-toluolsulfinato-O,O′)-diaquo-kupfer (II) (1) erhält man gemäß Gl. (2) in Aceton das vierfach konfigurierte Bis(p-toluolsulfinato-O)-2,2′- bipyridyl-kupfer(II) (2) und gemäß Gl. (3) in Wasser das pseudooktaedrische Bis(p-toluolsulfinato-O)-bis(2,2′-bipyridyl)-kupfer(II) (3O). 3O bildet sich auch aus 2 und 2,2′-Bipyridyl in Wasser gemäß Gl. (6); in Acetone oder THF verläuft Gl. (6) reversibel. Bei der Addition von 2,2′-Bipyridyl an 1 in Pyridin entsteht dagegen das zu 3O bindungsisomere Bis(p-toluolsulfinato-S)-bis(2,2′-bipyridyl)-kupfer(II) (3S) gemäß Gl. (4). Das O-isomere 3 O kann schließlich in Pyridin bei 115° gemäß Gl. (5) irreversibel in das S-Isomere 3S übergeführt werden. Die neudargestellten Verbindungen werden an Hand ihrer IR- und Elektronenspektren sowie durch magnetochemische Untersuchungen charakterisiert.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19731060207
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