Abstract
AbstractMixed amido/imido/guanidinato tantalum complexes [Ta(NR1R2){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, R3 = 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, 69451 Weinheim, Germany, 2006)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
