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zhchd2008

金虫 (小有名气)

l楼上的,你好强啊,咋做到的?在帮帮我
4.Conclusion
The first examples of lanthanide coordination polymers
with bpdc and phen were self-assembled by hydrothermal
method.The bpdc ligands in these polymers adopt tetrad-
entate coordination modes in two bridging bidentate car-
boxylate groups.Coordination polymers 1–4 are
isostructural,and 1-D zigzag chains are composed of
Ln2(bpdc)3(phen)2(H2O)2 building blocks.The bond
lengths of Ln–O,Ln–N and Ln Ln separations show a
lanthanide contraction over the series.The thermal stabil-
ity of the frameworks can be attributed to the high coordi-
nation number of lanthanide ions,the strong metal–
carboxylate bonds and p–p interactions.Photolumines-
cence properties indicate that compound 2 and compound
4 emit characteristic fluorescence,respectively.
11楼2010-04-13 13:06:20
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daizhq8244

木虫 (小有名气)

好艰涩啊,等哈
当你不能够再拥有,你唯一可以做的,就是令自己不要忘记
12楼2010-04-13 13:17:23
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daizhq8244

木虫 (小有名气)

★
小木虫(金币+0.5):给个红包,谢谢回帖交流
第一个含有bpdc和苯的稀土配位化合物的例子是通过晶体生长水热法自聚合成的。这些聚合物中的Bpdc配体在两个羧基双齿桥处采取四齿配位方式。配位聚合物1-4是同结构的,1-D锯齿链是由Ln2(bpdc)3(phen)2(H2O)2砌块组成的。Ln-O,Ln-N的键长和Ln Ln的分离表明了这一系列的镧系收缩。这一结构的热稳定性可归功于稀土离子高的配位数,强的金属-羧酸键和P-P键相互作用。光致发光特性表明化合物2,4会各自发射特征荧光。
当你不能够再拥有,你唯一可以做的,就是令自己不要忘记
13楼2010-04-13 13:40:19
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zhchd2008

金虫 (小有名气)

谢谢,你很有耐心啊。
14楼2010-04-13 13:54:31
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