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Reaktion von ( R,R )‐( N,N′ )‐Diisopropylcyclohexyl‐1,2‐diamin mit Berylliumchlorid. Kristallstrukturen von ( R,R,S N ,S N′ )‐[(C 12 H 26 N 2 )BeCl 2 ] und ( R,R,S N ,S N′ )‐[(C 12 H 26 N 2 )BeCl(N 3 )]
Author(s) -
Neumüller Bernhard,
Dehnicke Kurt
Publication year - 2007
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.200700393
Subject(s) - crystal structure , dichloromethane , crystallography , molecule , stereochemistry , chemistry , medicinal chemistry , solvent , organic chemistry
Reaction of ( R,R )‐( N,N′ )‐Diisopropylcyclohexyl‐1,2‐diamine with Beryllium Chloride. Crystal Structures of ( R,R,S N ,S N′ )‐[(C 12 H 26 N 2 )BeCl 2 ] and ( R,R,S N ,S N′ )‐[(C 12 H 26 N 2 )BeCl(N 3 )] ( R,R )‐( N,N′ )‐diisopropylcyclohexyl‐1,2‐diamine reacts with equimolar amounts of BeCl 2 in dichloromethane suspension to give the donor acceptor complex ( R,R,S N ,S N′ )‐[(C 12 H 26 N 2 )BeCl 2 ] ( 1 ). The reaction of 1 with excess trimethylsilylazide in dichloromethane solution leads to the formation of the azido derivative ( R,R,S N ,S N′ )‐[(C 12 H 26 N 2 )BeCl(N 3 )] ( 2 ). Both complexes are characterized by X‐ray diffraction and by IR spectroscopy. 1 · 0.5CH 2 Cl 2 : Space group P6 1 22, Z = 6, lattice dimensions at 193 K: a = b = 1390.3(1), c = 1624.8(1) pm, R 1 = 0.0509. In the chiral complex 1 the BeCl 2 unit forms a BeN 2 C 2 chelate ring with Be–N distances of 199.8(4) pm. The molecules are associated via Cl···H–N hydrogen bridges along [001]. 2 : Space group P2 1 , Z = 6, lattice dimensions at 193 K: a = 1501.7(2), b = 968.6(2), c = 1629.2(4) pm, β = 90.03(3)°, R 1 = 0.0981. The structure of 2 consists of three independent chiral units ( R,R,S N ,S N′ )‐[(C 12 H 26 N 2 )BeCl(N 3 )], which are associated via Cl···H–N and N α ···H–N hydrogen bridges along [100], N α being N α atoms of the azido groups.