ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Preparative, Spectroscopic, and Crystallographic Investigations on Phosphinato Complexes of Rhenium with Bidentate Nitrogen LigandsThe ionogenic compounds [(OC)3Re(en-N,N′)(en-N)][O2PR2] (2a, b) and the phosphinato-O,O′ complexes [μ-R2PO2Re(CO)3(en-N)]n (3a, b) are obtained from [μ-R2PO2Re(CO)3]n (1a, b) [R = CH3 (a), C6H5 (b)] and 1,2-ethanediamine at 110°C and 20 °C respectively. On the basis of the mass spectra 3a is dimeric (n = 2) and 3b oligomeric (n 〉 2). The monomeric phosphinato-O complexes [R2P(O)ORe(CO)3bpy] (4a, b) are formed by addition of 2,2′-bipyridine (bpy) to 1a, b. The vibrational spectra are in agreement with a bidentate [3a, b] and a unidentate [4a, b] linkage respectively of the phosphinate ligands to the rhenium atoms. 2b crystallizes monoclinic in the space group P21/c with Z = 8.
Notes:
Aus [μ-R2PO2Re(CO)3]n (1a, b) [R = CH3 (a), C6H5 (b)] und 1,2-Ethandiamin (en) erhält man bei 110°C die ionogenen Verbindungen [(OC)3 Re(en-N,N′)(en-N)][O2PR2] (2a, b) und bei 20°C die Phosphinato-O,O′-Komplexe [μ-R2PO2Re(CO)3(en-N)]n (3a, b). Aufgrund der Massenspektren liegt 3a dimer (n = 2) und 3b oligomer (n 〉 2) vor. Durch Addition von 2,2′-Bipyridin (bpy) an 1a, b bilden sich die monomeren Phosphinato-O-Komplexe [R2P(O)ORe(CO)3bpy] (4a, b). Die Schwingungsspektren entsprechen einer zweizähnigen [3a, b] bzw. einzähnigen [4a, b] Verknüpfung der Phosphinat-Liganden an die Rheniumatome. 2b kristallisiert monoklin in der Raumgruppe P21/c mit Z = 8.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19801130222
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