ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Preparation and Properties of, and Reactions with, Metal-Containing Heterocycles, XXIX. A Novel Phosphidomanganate as Starting Material for the Preparation of PhosphamanganacyclopropanesThe bifunctional phosphidomanganate [(OC)4MnPPh2]2- (2) is obtained by a two step reduction of (OC)4BrMnPPh2H (1) with sodium in THF. The presence of two adjacent nucleophilic centres in 2 is proved by the reaction with (CH3O)2SO2 and Br[CH2]3Br, which results in the formation of (OC)4CH3MnPPh2CH3 (3) and (4), respectively. From 2 and Cl2CHR the manganacyclopropane derivatives (5a, b) [R = H(a), CH3(b)] with unusual bonding properties are obtained. According to an X-ray structural analysis, crystals of 5a are monoclinic, space group P21/c with Z = 4.
Notes:
Durch zweistufige Reduktion von (OC)4BrMnPPh2H (1) mit Natrium in THF erhält man das bifunktionelle Phosphidomanganat [(OC)4MnPPh2]2- (2). Das Vorliegen von zwei benachbarten nucleophilen Zentren in 2 läßt sich durch Umsetzung mit (CH3O)2SO2 und Br[CH2]3Br beweisen, die zu (OC)4CH3MnPPh2CH3 (3) bzw. (4) führt. Aus 2 und Cl2CHR lassen sich die Manganacyclopropan-Derivate (5a, b) [R = H(a), CH3(b)] mit ungewöhnlichen Bindungseigenschaften gewinnen. Nach einer Röntgenstrukturanalyse kristallisiert 5a monoklin in der Raumgruppe P21/c mit Z = 4.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19831160332
