950666-76-9

Basic information

• Product Name: [Ta(NEt₂)(N(cy)2CNEt₂)2(N-tBu)]
• CAS NO: 950666-76-9
• Molecular Weight: 881.123
• Mol File: 950666-76-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [Ta(NEt₂)(N(cy)2CNEt₂)2(N-tBu)](CAS DataBase Reference)
• NIST Chemistry Reference: [Ta(NEt₂)(N(cy)2CNEt₂)2(N-tBu)](950666-76-9)
• EPA Substance Registry System: [Ta(NEt₂)(N(cy)2CNEt₂)2(N-tBu)](950666-76-9)

Safety Data

• Hazardous Substances Data: 950666-76-9(Hazardous Substances Data)

Upstream product

• 169896-41-7 (tert-butylimido)tris(diethylamido)tantalum 
• 538-75-0 dicyclohexyl-carbodiimide 

Relevant articles and documents

Mixed amido/imido/guanidinato complexes of tantalum: Effects of ligand substitution on thermal properties

Mixed amido/imido/guanidinato tantalum complexes [Ta(NR1R 2){C(NR1R2)(NR3)2} 2(NR4)] [R1,R2 = methyl, ethyl; R3 = cyclohexyl (cy), isopropyl; R4 = tert-butyl, n-propyl] have been synthesized by the insertion of carbodiimides into tantalum-amide bonds. All compounds have been characterized by means of NMR spectroscopy, mass spectrometry, and CHN analysis. Additionally, single crystal structures of five compounds (4: R1 = Me, R2 = Et, R 3 = iPr, R4 = tBu; 5: R1, R2 = Et, R3 = iPr, R4 = tBu; 6: R1, R2 = Me, R3 = cy, R4 = tBu; 8: R1, R2 = Et, R3 = cy, R4 = tBu; 9: R1, R2 = Et, R3 = iPr, R4 = nPr) have been determined and relevant structural issues are discussed. The thermal properties of all complexes have been investigated by TGA/DTA measurements. Thus, complexes originating from diisopropylcarbodiimide (iPr-cdi) are significantly more volatile than complexes derived from dicyclohexylcarbodiimide (cy-cdi). In contrast, variations of R1, R2, and R4 have only a small impact on the thermal behavior of the complexes. Finally, selected compounds have been pyrolyzed at 600°C, and the decomposition products studied by GC-MS and 1H NMR spectroscopy. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.