Semireduced bridging ligands containing N-N multiple bond coordination sites. ESR study of binuclear Group 6 metal carbonyl complexes

1986 ◽  
Vol 25 (19) ◽  
pp. 3442-3448 ◽  
Author(s):  
Wolfgang Kaim ◽  
Stephan Kohlmann
1993 ◽  
Vol 447 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Ikhtiar Ahmed ◽  
Alan M. Bond ◽  
Ray Colton ◽  
Mandy Jurcevic ◽  
John C. Traeger ◽  
...  

Author(s):  
Nicole L. Armanasco ◽  
Murray V. Baker ◽  
Michael R. North ◽  
Brian W. Skelton ◽  
Allan H. White

1986 ◽  
Vol 41 (5) ◽  
pp. 629-639 ◽  
Author(s):  
Anna-Margarete Hinke ◽  
Axel Hinke ◽  
Wilhelm Kuchen ◽  
Wolfgang Hönle

Abstract Reduction of MentPBr2M(CO)5 1 (M = Cr, W) with magnesium in THF yields the diphos­phene complex (CO)5M(Ment)P=P(Ment)M(CO)5 2 as the main product. In addition, a phosphinidene complex, (CO)5M(Ment)PM(CO)5 (3) is also formed. The latter is obtained in larger amounts, if the reaction is carried out in the presence of M(CO)5THF. The proposed structures are confirmed by NMR and UV data as well as - in the case of the chromium compounds (2a, 3a) - by crystal structure analysis. Compound 2a is obtained only as the frans-isomer. The P-P distance in 2a (204.0 pm) indicates a double bond which does not participate in the complex formation. The P-Cr distance in 3a (average: 230.3 pm) is within the low est range found for this element combination. Reaction of 2a with LiAlH4 yields the diphosphane complex (CO)5CrMent(H)P-P(H)MentCr(CO)5 4 as a mixture of “meso” and “rac” diastereomers.


2002 ◽  
Vol 642 (1-2) ◽  
pp. 179-185 ◽  
Author(s):  
Liang-Fu Tang ◽  
Zhi-Hong Wang ◽  
Jian-Fang Chai ◽  
Xue-Bing Leng ◽  
Ji-Tao Wang ◽  
...  

2009 ◽  
Vol 34 (7) ◽  
pp. 791-795 ◽  
Author(s):  
Yang Yu ◽  
Xiao-Yan Zhang ◽  
Juan Hong ◽  
Hai-Bin Song ◽  
Liang-Fu Tang

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