Syntheses, crystal structures, visible and near-IR luminescent properties of ternary lanthanide (Dy3+, Tm3+) complexes containing 4,4,4-trifluoro-1-phenyl-1,3-butanedione and 1,10-phenanthroline

The ligands 4,4,4-trifluoro-1-phenyl-1.3-butanedione (Hbfa) and 1,10-phenanthroline (phen) were used to prepare ternary lanthanide (Ln) complexes [Dy(bfa)(3)phen and Tm(bfa)(3)phen]. Crystal data: Dy(bfa)(3)phen C(42)H(26)FqN(2)O(6)Dy, triclinic, P (1) over bar, a= 9.9450(6) angstrom, b = 14.0944(9) angstrom, c = 14.6043(9) angstrom, alpha = 82.104(1)degrees, beta = 87.006(1)degrees, gamma = 76.490(1)degrees, V = 1971.1(2)angstrom(3), Z = 2; Tm(bfa)(3)phen C42H26F9N2O6Tm, triclinic, P (1) over bar, a = 9.898(5)angstrom, b = 13.918(5)angstrom, c = 14.753(5)angstrom, a = 83.517(5)degrees, alpha = 86.899(5)degrees, gamma = 76.818(5)degrees, V = 1965.3(14)angstrom(3), Z = 2. The coordination number of the central Ln(3+) (Ln = Dy, Tm) ion is eight, with six oxygen atoms from three Hbfa ligands and two nitrogen atoms from the phen ligand.

钼系1,2-聚丁二烯橡胶扩大试验

以钼系化合物为主催化剂,有机铝为助催化剂,烯丙基溴为分子量调节剂,加氢汽油为溶剂,在30 L连续聚合装置上进行了 1,2-聚丁二烯橡胶合成试验。首釜聚台温度 60—80℃,2~#、3~# 釜聚合温度70—80℃。胶液用热水凝聚,湿胶经螺杆挤压机脱水干燥。所得产品性能为:[η]=2.08—2.77dL/g,ML_(1+4)100℃=57—69,分子量分散指数1.3—2.2,1,2-链节含量为 81.4—90％。聚合经 1 500 h连续运转,无挂胶和凝胶。同时对产品的充油及其与 BR、NR共混进行了试验。