Zirconium and Hafnium Hydrazinediido Half-Sandwich Complexes: Synthesis and Reactivity
作者： Peter D. Schweizer , Hubert Wadepohl , Lutz H. Gade
DOI: 10.1021/OM500087S
关键词:
摘要: The hydrazinediido complexes [Cp*M(NxylN)(NNPh2)(dmap)] (M = Zr, 3a; M Hf, 3b; NxylN 2-(N-xylylamino)pyrrolinate) have been synthesized, and their reactivity has investigated. Both were prepared from [Cp*M(NxylN)Cl2] (1a,b) [Cp*M(NxylN)(NHNPh2)Cl] (2a,b), respectively, as precursors. While 3a was obtained by dehydrohalogenation of 2a using LiHMDS in the presence dmap, reaction 2b with initially afforded a mixture [Cp*Hf(NxylN)(NHNPh2)2] (6) [Cp*Hf(NxylN)(NNPh2)LiHMDS] (4), which thermolyzed subsequently dmap to yield 3b. [Cp*Zr(NxylN)(NNPh2)(dmap)] (3a) reacted diisopropylcarbodiimide, giving rearranged [2 + 2] cycloaddition product [Cp*Zr(NXylN){κ2-NiPrC(NNPh2)NiPr}] (7) six-membered zirconacycle [Cp*Zr(NXylN){κ2-N(NPh2)C(NiPr)NiPrC(NiPr)NiPr}] (8a). With N-phenylbenzimine [Cp*Zr(NXylN){κ2-N(NPh2)CHPhNPh}] (9) isolated, upon diphenylacetylene seven-membered [...
sci-hub.se 参考文章(81)
Thorsten Gehrmann, Gudrun T. Plundrich, Hubert Wadepohl, Lutz H. Gade, [2 + 2] Cycloaddition Products of Zirconium and Hafnium Hydrazinediides with Allenes and Heteroallenes and Their Thermally Induced Rearrangements Organometallics. ,vol. 31, pp. 3346- 3354 ,(2012) , 10.1021/OM300143H
M. Dolg, U. Wedig, H. Stoll, H. Preuss, Energy‐adjusted ab initio pseudopotentials for the first row transition elements Journal of Chemical Physics. ,vol. 86, pp. 866- 872 ,(1987) , 10.1063/1.452288
Yonghui Zhang, Erin K. Reeder, Richard J. Keaton, Lawrence R. Sita, Goldilocks Effect of a Distal Substituent on Living Ziegler−Natta Polymerization Activity and Stereoselectivity within a Class of Zirconium Amidinate-Based Initiators Organometallics. ,vol. 23, pp. 3512- 3520 ,(2004) , 10.1021/OM049835Z
Brett L. Lucht, David B. Collum, SOLVATION OF LITHIUM HEXAMETHYLDISILAZIDE BY N,N-DIMETHYLETHYLENEDIAMINE :EFFECTS OF CHELATION ON COMPETITIVE SOLVATION AND MIXED AGGREGATION Journal of the American Chemical Society. ,vol. 118, pp. 3529- 3530 ,(1996) , 10.1021/JA953517X
Sanjukta Banerjee, Eyal Barnea, Aaron L. Odom, Titanium-Catalyzed Hydrohydrazination with Monosubstituted Hydrazines: Catalyst Design, Synthesis, and Reactivity Organometallics. ,vol. 27, pp. 1005- 1014 ,(2008) , 10.1021/OM700852V
Jonathan D. Selby, Catherine D. Manley, Andrew D. Schwarz, Eric Clot, Philip Mountford, Titanium Hydrazides Supported by Diamide-Amine and Related Ligands: A Combined Experimental and DFT Study Organometallics. ,vol. 27, pp. 6479- 6494 ,(2008) , 10.1021/OM8007597
Thorsten Gehrmann, Julio Lloret Fillol, Hubert Wadepohl, Lutz H. Gade, Bridging N-Aminoisocyanate Ligands in Heterobimetallic Complexes: Coupling of Zirconium Hydrazinediides and Transition-Metal Carbonyls Organometallics. ,vol. 29, pp. 28- 31 ,(2010) , 10.1021/OM900877C
J. P. Foster, F. Weinhold, Natural hybrid orbitals Journal of the American Chemical Society. ,vol. 102, pp. 7211- 7218 ,(1980) , 10.1021/JA00544A007
Heike Herrmann, Julio Lloret Fillol, Hubert Wadepohl, Lutz H. Gade, A Zirconium Hydrazide as a Synthon for a Metallanitrene Equivalent: Atom‐by‐Atom Assembly of [EN2]2− Units (E=S, Se) by Chalcogen‐Atom Transfer in the Coordination Sphere of a Transition Metal Angewandte Chemie. ,vol. 46, pp. 8426- 8430 ,(2007) , 10.1002/ANIE.200703938
Thorsten Gehrmann, Julio Lloret Fillol, Hubert Wadepohl, Lutz H. Gade, Assembly of an R3N52− Chain by Cycloaddition of a Hydrazinediide and an Azide at Zirconium and its Thermal Fragmentation Angewandte Chemie. ,vol. 48, pp. 2152- 2156 ,(2009) , 10.1002/ANIE.200805631