Conclusions
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1.
X-ray diffraction structural analysis established the structure and steric features of N,N′-bis(di-tert-butylphosphino)-N-trimethylsilylaminoiminophosphine, which is the first representative of dicoordinated phosphorus compounds with a
bond system.
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2.
The unshared electron pair at the phosphorus atom bound to the “iminyl” nitrogen atom is virtually unconjugated with the P=N bond. Stabilization of the P=N bond is a consequence of the steric shielding by the bulky substituents.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2236–2240, October, 1985.
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Chernega, A.N., Antipin, M.Y., Struchkov, Y.T. et al. Molecular structure of N,N′-bis(di-tert-butylphosphino)-N-trimethylsilylaminoiminophosphine. Russ Chem Bull 34, 2068–2071 (1985). https://doi.org/10.1007/BF00963235
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DOI: https://doi.org/10.1007/BF00963235