Premium
Reaktionen von t BuPLi 2 mit Carbodiimiden
Author(s) -
Iravani Effat,
Neumüller Bernhard,
Grunenberg Jörg
Publication year - 2006
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500405
Subject(s) - carbodiimide , chemistry , trimethylsilyl , lithium (medication) , ligand (biochemistry) , ring (chemistry) , medicinal chemistry , silylation , nuclear magnetic resonance spectroscopy , crystallography , stereochemistry , polymer chemistry , organic chemistry , catalysis , medicine , biochemistry , receptor , endocrinology
Reaction of t BuPLi 2 with Carbodiimides The reaction of bis(cyclohexyl)carbodiimide with t BuPLi 2 in THF at 20 °C leads to the tetranuclear Li‐complex [Li 4 (THF) 2 { t BuP([ c HexN] 2 C) 2 } 2 ] ( 1 ). No addition on the carbodiimide but a silyl transfer was observed under similar conditions during the treatment of bis(trimethylsilyl)carbodiimide with t BuPLi 2 to give the lithium salts t BuP(SiMe 3 )Li and [Li(THF)(Me 3 SiN‐C≡N)] n ( 2 ). 1 was characterized by NMR, IR and RE spectroscopy, mass spectrometry and X‐ray analyses. Theoretical calculations were performed for 1 . According to the structural investigations 1 consists ofa central centrosymmetrical twelve‐membered Li 2 N 4 C 4 P 2 ring adjacent by two six‐membered LiN 2 C 2 P rings. The peripheric Li + cations posssess coordination number (cn) 3 buildt‐up by two N atoms and a THF ligand, while the two central Li + cations possess only cn 2. However, the theoretical calculations have shown no relevant bonding Li···Li or Li···P interaction.