Details

Autor(en) / Beteiligte

• Liu, Xu-Feng
• Xiao, Xun-Wen
• Shen, Liang-Jun

Titel

Synthesis, characterization, and crystal structures of N-functionalized diiron azadithiolate complexes related to the active site of [FeFe]-hydrogenases

Ist Teil von

• Journal of coordination chemistry, 2011-03, Vol.64 (6), p.1023-1031

Ort / Verlag

Abingdon: Taylor & Francis Group

Erscheinungsjahr

2011

Quelle

Taylor & Francis

Beschreibungen/Notizen

• A series of N-functionalized diiron azadithiolate complexes, [(µ-SCH 2 ) 2 NCH 2 CO 2 Me]Fe 2 (CO) 5  L [L = CO (1); PPh 3 (2); Ph 2 PCH 2 PPh 2 (3)], as active site models of [FeFe]-hydrogenases has been prepared and characterized. While 1 was prepared by a sequential reaction of (µ-HS) 2 Fe 2 (CO) 6 with two equiv. of aqueous HCHO, followed by treatment of (µ-HOCH 2 S) 2 Fe 2 (CO) 6 with one equiv. of H 2 NCH 2 CO 2 Me in 46% yield; 2 and 3 were prepared by a carbonyl substitution reaction of 1 with PPh 3 or Ph 2 PCH 2 PPh 2 in the presence of Me 3 NO · 2H 2 O in 90% and 85% yields, respectively. The crystal structures of 1 and 2 revealed that the substituent attached to the bridgehead nitrogen occupies an equatorial position and the PPh 3 ligand resides in an axial position of the square pyramid of Fe2.