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柳州市洋紫荆开花习性及影响因素调查分析 被引量:2
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作者 林云 《南方农业》 2020年第8期46-47,共2页
洋紫荆是南方观花赏叶的优选树种,广泛分布于我国华南地区。基于此,对柳州市各城区主干道、游园、苗圃等地洋紫荆的开花习性进行物候观察分析,研究气候、温度、光照和雨水等因素对洋紫荆开花的影响,并对柳州市洋紫荆的开花特性及影响因... 洋紫荆是南方观花赏叶的优选树种,广泛分布于我国华南地区。基于此,对柳州市各城区主干道、游园、苗圃等地洋紫荆的开花习性进行物候观察分析,研究气候、温度、光照和雨水等因素对洋紫荆开花的影响,并对柳州市洋紫荆的开花特性及影响因素进行归纳总结。 展开更多
关键词 洋紫荆 开花习性 影响因素 广西柳州市
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Syntheses and Crystal Structures of Two Silver(I) Complexes Isolated by the Reaction of [Ag(PPh_3)_2(MeCN)](SbF_6) with a N_6 Ligand
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作者 MAZhena linyun CHENZhong-Ning 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第11期1277-1281,共5页
Two silver(I) complexes were obtained by the reaction of a N6 ligand with [Ag(PPh3)2(MeCN)](SbF6). In complex [AgL1(PPh3)](SbF6) 1, the silver center is bound to three N donors of the nitrogen ligand and P donor of ... Two silver(I) complexes were obtained by the reaction of a N6 ligand with [Ag(PPh3)2(MeCN)](SbF6). In complex [AgL1(PPh3)](SbF6) 1, the silver center is bound to three N donors of the nitrogen ligand and P donor of one triphenylphosphine group, forming an irregular AgN3P tetrahedron. In complex [Ag(PPh3)4](SbF6) 2, the Ag+ ion is coordinated to four triphenyl- phosphine groups, affording a tetrahedral geometry. Crystal data for complex 1: C30H37AgF6N6PSb, Mr = 856.25, orthorhombic, space group Pbca, a = 19.0702(9), b = 15.9047(7), c = 21.498(1) ?, V = 6520.5(6) ?3, Z = 8, Dc= 1.744 g/cm3, F(000) = 3408, μ = 1.544 mm-1, the final R = 0.0367 and wR = 0.1077 for 5325 observed reflections with I > 2σ(I); and those for 2: C72H60AgF6P4Sb, Mr = 1392.70, trigonal, space group R3, a = 14.4577(6), b = 14.4577(6), c = 51.544(2) ?, V = 9330.5(7) ?3, Z = 6, Dc= 1.487 g/cm3, F(000) = 4224, μ = 0.913 mm-1, the final R = 0.0352 and wR = 0.1089 for 3498 observed reflections with I > 2σ(I). 展开更多
关键词 coordination crystal structure N6 ligand silver(I) complexes
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