The title compound N,N,N’,N’-tetra[(diphenylphosphine)methyl]-1,4-phenylenediamine is synthesized by reaction of [Ph2P(CH2OH)2]Cl and 1,4-phenylenediamine.It is characterized by elemental analysis,IR,31PNMR,1HNMR.Single crystal X-ray diffraction analysis reveals that it is centro-symmetric with the inversion center at the centroid of phenylene.Intermolecular π–π stacking interactions between phenyl rings make molecules arrange along the b axis into one-dimensional chains,while these chains are further extended by intermolecular C-H…π interactions into three-dimensional supramolecular structure.The crystal is orthorhombic system with space group Pbca,Mr: 900.90,a=12.215(1),b=14.460(2),c=27.821(3),β=90°,v=4914.0(9)3,z=4,Dc=1.218 mg·m-3,F(000)=1896,R=0.0487,wR=0.1245.
Pyridin-a-ylmethyl 3,5-bis(pyridin-a-ylmethoxy)benzoate(a=2,L1;a=3,L2;a=4,L3)were synthesized by reaction of 3,5-dihydroxybenzoic acid and a-chloromethyl pyridine(a=2,3,4).Their structures were characterized by IR,1H NMR,13C NMR,ESI-MS and elemental analysis.The effects of reaction temperature and reaction time on esterification and etherification were also studied,respectively.
