Fe-La, Fe-Ce, Fe-La-P, Fe-Ce-P and Fe-P alloys were obtained f rom aqueous solutions by using optimized electroplaing solutions and process con ditions. The experimental results show that these alloys (Fe-La-P, Fe-Ce-...Fe-La, Fe-Ce, Fe-La-P, Fe-Ce-P and Fe-P alloys were obtained f rom aqueous solutions by using optimized electroplaing solutions and process con ditions. The experimental results show that these alloys (Fe-La-P, Fe-Ce- P and Fe-P) have amorphous structure. The crystallization activation energy a nd kinetics equation of three kinds amorphous coatings have been determined by D SC method. The results indicated that the crystallization activation energy of F e-P, Fe-La-P, Fe-Ce-P amorphous coatings are 175.2, 370.1, 434.6kJ·m ol-1 respectively. The crystallization mechamism of three kinds amorphous alloy s may be expressed by Avrami-Erofeev equation (n=1), the kinetics equation is .展开更多
Crystals of a new 1,4-dimethyl cucurbituril(TMeQ6) with Silver(I) ion were synthesized, and the structure was determined by X-ray diffraction technique. There are two kinds of TMeQ6 A and B which formed molecular enca...Crystals of a new 1,4-dimethyl cucurbituril(TMeQ6) with Silver(I) ion were synthesized, and the structure was determined by X-ray diffraction technique. There are two kinds of TMeQ6 A and B which formed molecular encapsulates with two silver ion lids in the self-assembled entities. One dimensional supramolecular tubes are formed from the encapsulates A, and two dimensional molecular sieves are formed from the encapsulates B, the tubes and the sieves stack together alternately in the self-assembled entities. CCDC: 271401.展开更多
A novel complex of a new 1,4-dicyclohexyl cucurbituril(DCYQ6) with sodium(I) ion was synthesized, and the crystal structure was determined by X-ray diffraction technique. In this self-assembled entity both the cavity ...A novel complex of a new 1,4-dicyclohexyl cucurbituril(DCYQ6) with sodium(I) ion was synthesized, and the crystal structure was determined by X-ray diffraction technique. In this self-assembled entity both the cavity interaction of DCYQ6 included a nitrate anion and the portal interaction of the dipole carbonyls of DCYQ6 with sodium cations lead to form self assembled molecular capsules. The crystal structure of the entity shows a packing of the self assembled molecular capsules connected by hydrogen bonds of water molecules. CCDC: 271400.展开更多
A molecular bowl with barium ion covering one portal of decamethylcucurbit[5]uril as a‘metal-ion- bottom’has been synthesized. The structure of the molecular bowl has been confirmed by the single crystal X-ray diffr...A molecular bowl with barium ion covering one portal of decamethylcucurbit[5]uril as a‘metal-ion- bottom’has been synthesized. The structure of the molecular bowl has been confirmed by the single crystal X-ray diffraction determination. It belongs to orthorhombic with space group of Pna21. The crystal unit cell parameters are: a=3.2108(6) nm, b=1.4742(3) nm, c=1.1516(2) nm, and V=5.4509(18) nm3, Dc=1.677 Mg·m-3, Z=4, F(000)= 2832, R=0.0551, wR=0.1568. CCDC: 290552.展开更多
文摘Fe-La, Fe-Ce, Fe-La-P, Fe-Ce-P and Fe-P alloys were obtained f rom aqueous solutions by using optimized electroplaing solutions and process con ditions. The experimental results show that these alloys (Fe-La-P, Fe-Ce- P and Fe-P) have amorphous structure. The crystallization activation energy a nd kinetics equation of three kinds amorphous coatings have been determined by D SC method. The results indicated that the crystallization activation energy of F e-P, Fe-La-P, Fe-Ce-P amorphous coatings are 175.2, 370.1, 434.6kJ·m ol-1 respectively. The crystallization mechamism of three kinds amorphous alloy s may be expressed by Avrami-Erofeev equation (n=1), the kinetics equation is .
文摘Crystals of a new 1,4-dimethyl cucurbituril(TMeQ6) with Silver(I) ion were synthesized, and the structure was determined by X-ray diffraction technique. There are two kinds of TMeQ6 A and B which formed molecular encapsulates with two silver ion lids in the self-assembled entities. One dimensional supramolecular tubes are formed from the encapsulates A, and two dimensional molecular sieves are formed from the encapsulates B, the tubes and the sieves stack together alternately in the self-assembled entities. CCDC: 271401.
文摘A novel complex of a new 1,4-dicyclohexyl cucurbituril(DCYQ6) with sodium(I) ion was synthesized, and the crystal structure was determined by X-ray diffraction technique. In this self-assembled entity both the cavity interaction of DCYQ6 included a nitrate anion and the portal interaction of the dipole carbonyls of DCYQ6 with sodium cations lead to form self assembled molecular capsules. The crystal structure of the entity shows a packing of the self assembled molecular capsules connected by hydrogen bonds of water molecules. CCDC: 271400.
文摘A molecular bowl with barium ion covering one portal of decamethylcucurbit[5]uril as a‘metal-ion- bottom’has been synthesized. The structure of the molecular bowl has been confirmed by the single crystal X-ray diffraction determination. It belongs to orthorhombic with space group of Pna21. The crystal unit cell parameters are: a=3.2108(6) nm, b=1.4742(3) nm, c=1.1516(2) nm, and V=5.4509(18) nm3, Dc=1.677 Mg·m-3, Z=4, F(000)= 2832, R=0.0551, wR=0.1568. CCDC: 290552.
