Issue 14, 2016

Concise access to iminophosphonamide stabilized heteroleptic germylenes: chemical reactivity and structural investigation

Abstract

The influence of a sterically demanding iminophosphonamide ligand, [(2,6-iPr2C6H3N)P(Ph2)(NtBu)]H (LH), on the synthesis and stability of a heteroleptic germylene monochloride, [(2,6-iPr2C6H3N)P(Ph2)(NtBu)]GeCl (1), and its reaction chemistry has been discussed. Complex 1 behaves as a Lewis base to form an adduct with Fe(CO)4, namely [(2,6-iPr2C6H3N)P(Ph2)(NtBu)]Ge(Cl)Fe(CO)4 (2). Reaction of 1 with KOtBu or AgOSO2CF3 affords Ge(II) compounds, [(2,6-iPr2C6H3N)P(Ph2)(NtBu)]GeR (R = OtBu (3), OSO2CF3 (4)). Treatment of complex 1 with elemental sulfur or selenium leads to heavier analogues of germaacid chlorides, [(2,6-iPr2C6H3N)P(Ph2)(NtBu)]Ge(E)Cl (E = S (5), Se (6)). Similarly, compound 3 on reaction with elemental sulfur or selenium produces heavier analogues of germaesters, [(2,6-iPr2C6H3N)P(Ph2)(NtBu)]Ge(E)OtBu (E = S (7), Se (8)). Complexes 1–8 were characterized using multinuclear NMR and EI-MS, and solid state structures of complexes 1–3, 5 and 8 have been elucidated using single crystal X-ray diffraction.

Graphical abstract: Concise access to iminophosphonamide stabilized heteroleptic germylenes: chemical reactivity and structural investigation

Supplementary files

Article information

Article type
Paper
Submitted
29 شعبان 1436
Accepted
03 ذو الحجة 1436
First published
03 ذو الحجة 1436

Dalton Trans., 2016,45, 6079-6087

Author version available

Concise access to iminophosphonamide stabilized heteroleptic germylenes: chemical reactivity and structural investigation

B. Prashanth and S. Singh, Dalton Trans., 2016, 45, 6079 DOI: 10.1039/C5DT02287H

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