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.Si...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.展开更多
The proton dissociation constants of some novel water soluble phosphine ligands containing phosphonic acid were determined pH metrically at 25℃ and at an inonic strength of 0.1mol·L -1 (KNO 3).From these data it...The proton dissociation constants of some novel water soluble phosphine ligands containing phosphonic acid were determined pH metrically at 25℃ and at an inonic strength of 0.1mol·L -1 (KNO 3).From these data it had been established that when the complexing group PPh 2 was introdued,the proton dissociating power of phosphonic acid significantly increased and the p K 1,p K 2 values were 1.35～1.75 log units smaller than those of the corresponding 2 aminoethylphosphonic acid analogues;while ertheric linkenge was introdued into the corresponding phosphonic acid,the proton dissociating ability of NH + 3, PO 3H - groups decreased and that of PO 3H 2 group increased respectively;However,as hydroxyethyl group was introduced,all proton dissociating power of NH + 3, PO 3H - and PO 3H 2 groups decreased.The ultraviolet properties of this type of phosphine complexes were also determinated.展开更多
文摘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.
文摘The proton dissociation constants of some novel water soluble phosphine ligands containing phosphonic acid were determined pH metrically at 25℃ and at an inonic strength of 0.1mol·L -1 (KNO 3).From these data it had been established that when the complexing group PPh 2 was introdued,the proton dissociating power of phosphonic acid significantly increased and the p K 1,p K 2 values were 1.35～1.75 log units smaller than those of the corresponding 2 aminoethylphosphonic acid analogues;while ertheric linkenge was introdued into the corresponding phosphonic acid,the proton dissociating ability of NH + 3, PO 3H - groups decreased and that of PO 3H 2 group increased respectively;However,as hydroxyethyl group was introduced,all proton dissociating power of NH + 3, PO 3H - and PO 3H 2 groups decreased.The ultraviolet properties of this type of phosphine complexes were also determinated.
