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Coordinatively and Electronically Unsaturated Pentamethylcyclopentadienyliridium(III) Complexes with the Dianions of Biuret, of the Diamide of Malonic Acid and of an N ‐Acetyldipeptide Ester
Author(s) -
Ponikwar Walter,
Mayer Peter,
Beck Wolfgang
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200208)2002:8<1932::aid-ejic1932>3.0.co;2-7
Subject(s) - chemistry , biuret test , malonic acid , chelation , ring (chemistry) , medicinal chemistry , stereochemistry , inorganic chemistry , organic chemistry , urea
The dianions of biuret, of the diamide of malonic acid and of N ‐acetyl‐ L ‐alanyl‐ L ‐alanine methyl ester give the coordinatively unsaturated 16‐electron N , N ′‐chelate complexes [Cp*Ir[NHC(O)NHC(O)NH)] ( 1 ), [Cp*Ir[NHC(O)CH 2 C(O)NH)] ( 2 ) and {Cp*Ir[N(COCH 3 )CH(CH 3 )C(O)NCH(CH 3 )CO 2 Me]} ( 3 ) upon reaction with [Cp*IrCl 2 ] 2 . From [(R 3 P)PdCl 2 ] 2 (R = Et, Ph) and biuret the complexes [(Cl)(R 3 P)Pd(η 2 ‐biureto)Pd] − Na + were obtained. The X‐ray structure determinations of 1 and 3 reveal that the almost planar chelate rings lie perpendicular to the Cp* ring. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)