investigated in ligand-substitution reactions with [Co(CNR)5]X, X = ClO4, BF4; R = C6H5, o-MeC6H4, p-ClC6H4, 2,6-Et2C6H3. The P(NEt2)3 monosubstituted in all instances, including reduction/ligand substitution reaction with [Co(CNR)5](ClO4)2. The P(C6H13-n)3 disubstituted, except with the sterically-hindered R = 2,6-Et2C6H3, which monosubstituted. The P(C2H4CN)3, whose limited solubility forced departure
三烷基膦,P(NEt2)3,P(
C6H13-n)3和P(C2H4CN)3; 在与[Co(CNR)5] X,X =
ClO4,
BF4的
配体取代反应中进行了研究;R = C 6 H 5,o-MeC 6 H 4,p-ClC 6 H 4,2,6-Et 2 C 6 H 3。在所有情况下,P(NEt2)3均被单取代,包括与[Co(CNR)5]( )2的还原/
配体取代反应。P( -n)3经双取代,但位阻的R = 2,6-Et2C6H3被单取代。P(C2H4CN)3,其有限的溶解度迫使其脱离常规的
CH2Cl2溶剂,根据芳基异
氰化物进行单取代或双取代:[Co(CNR)3 P-(C2H4CN)3} 2] X,R =
C6H5,C6H4Me -o,
C6H4Cl-p;[Co(CNR)4P(C2H4CN)3] X,R = -p,C6H3Et2-2,6。即使在Co(II)反应中也获得了[Co(CNC6H3Et2-2