Komplexchemie P-reicher Phosphane und Silylphosphane. XXV. Bildung und Struktur des [{cyclo-P3(PtBu2)3}{Ni(CO)2}{Ni(CO)3}]

✍ Scribed by Harald Krautscheid; Eberhard Matern; Jolanta Olkowska-Oetzel; Jerzy Pikies; Gerhard Fritz

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: German
• Weight: 102 KB
• Volume: 627
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/1521-3749(200105)627:5<999::aid-zaac999>3.0.co;2-g

✦ Synopsis

Professor Kurt Dehnicke zum 70. Geburtstag gewidmet Inhaltsu È bersicht. [{cyclo-P 3 (P t Bu 2 ) 3 }{Ni(CO) 2 }{Ni(CO) 3 }] entsteht aus [Ni(CO) 4 ] und t Bu 2 P±P=P(R) t Bu 2 (R = Br, Me). Die beiden cis-sta Èndigen t Bu 2 P-Gruppen des Cyclotriphosphans, das durch Trimerisierung des Phosphinophosphinidens t Bu 2 P±P entsteht, koordinieren chelatartig eine Ni(CO) 2 -Ein-heit unter Ausbildung eines fu È nfgliedrigen P 4 Ni-Ringes; der trans-P t Bu 2 -Substituent bindet eine Ni(CO) 3 -Gruppe. Der Komplex kristallisiert orthorhombisch in der Raumgruppe Pbca (Nr. 61) mit a = 933,30(5), b = 2353,2(1) und c = 3474,7(3) pm. Coordination Chemistry of P-rich Phosphanes and Silylphosphanes. XXV [1] Formation and Structure of [{cyclo-P 3 (P t Bu 2 ) 3 }{Ni(CO) 2 }{Ni(CO) 3 }] Abstract. t Bu 2 P±P=P(R) t Bu 2 (R = Br, Me) reacts with [Ni(CO) 4 ] yielding [{cyclo-P 3 (P t Bu 2 ) 3 }{Ni(CO) 2 }{Ni(CO) 3 }]. The two cis-t Bu 2 P substituents of the cyclotriphosphane, which results from the trimerization of the phosphinophosphinidene t Bu 2 P±P, are coordinating to a Ni(CO) 2 unit forming a five-membered P 4 Ni chelate ring. The trans-t Bu 2 P group is linked to a Ni(CO) 3 unit. The compound crystallizes in the orthorhombic space group Pbca (No. 61) with a = 933.30(5), b = 2353.2(1) and c = 3474.7(3) pm.