Formation of an Unusual Bis(diguanidinate) Ligand via Nucleophilic Attack of a Guanidinate onto a Carbodiimide
Rebecca L. Melen A B C , Hayley R. Simmonds A , Hubert Wadepohl B , Paul T. Wood A , Lutz H. Gade B and Dominic S. Wright A C
+ Author Affiliations
- Author Affiliations
A Chemistry Department, Cambridge University, Lensfield Road, Cambridge CB2 1EW, UK.
B Institute of Inorganic Chemistry, University of Heidelberg, In Neuenheimer Feld 270 D-69120 Heidelberg, Germany.
C Corresponding authors. Email: rebecca.melen@cantab.net; dsw1000@cam.ac.uk
Australian Journal of Chemistry 67(7) 1030-1036 https://doi.org/10.1071/CH14170
Submitted: 26 March 2014 Accepted: 28 April 2014 Published: 30 May 2014
Abstract
During an investigation of the synthesis of the new mono- and bis(guanidinate) complexes [{iPr2NC(···NiPr)2}GaCl2] (2) and [{iPr2NC(···NiPr)2}2GaCl] (3) from the in situ reactions of the lithium guanidinate [{iPr2NC(···NiPr)2}Li]n (1) with GaCl3, an unexpected new guanidinate expansion reaction was uncovered in which it is found that the nucleophilic addition of 2 to the carbodiimide, iPrN=C=NiPr, gives [iPrN{C(NiPr)=NiPr}{C(=NiPr)NiPr2}GaCl2] (4), containing an unusual bis(diguanidinate) ligand.
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