ChemInform Abstract: The Crystal and Molecular Structures of Two 1:2 Complexes of 1,4‐Diazabicyclo(2.2.2)octane (DABCO) with 1‐(o‐Chlorophenyl)‐1‐phenyl‐2‐propyn‐1‐ol (CPPOH), and Those of Two 1:2 Complexes of N,N′ Dimethylpiperazine (DMP) with CPPOH

Abstract

X-Ray crystal structure analysis of the title four complexes showed that crystals consist of CPPOH···achiral diamine···CPPOH units. In the first two crystals a DABCO molecule is bound by two (−)-CPPOH molecules (1) or by (+)- and (−)-CPPOH (2) to form 1:2 complex by strong intermolecular O–H···N hydrogen bonds [O–H···N=2.707(3) and 2.755(3) (1) and 2.704(4) and 2.747(4) A (2)]. The latter two crystals are respectively formed by (+)-CPPOH···DMP···(−)-CPPOH complex (3) [O–H···N=2.771(3) A] and (−)-CPPOH···DMP···(−)-CPPOH complex (4) [O–H···N=2.768(5) and 2.730(6) A].