A C Symmetric Nitrate Complex with a Thiophene-Based Tripodal Receptor.
A C Symmetric Nitrate Complex with a Thiophene-Based Tripodal Receptor.
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具有噻吩基三二极体受体的C对称硝酸盐配合物。
DOI:
10.1021/cg2001859
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发表时间:
2011-04-06
影响因子:
3.8
通讯作者:
Hossain, Md Alamgir
中科院分区:
文献类型:
--
作者:
Isiklan, Muhammet;Saeed, Musabbir A.;Pramanik, Avijit;Wong, Bryan M.;Fronczek, Frank R.;Hossain, Md Alamgir
A thiophene-based tripodal receptor has been synthesized and its complexes with nitrate and iodide have determined by single-crystal X-ray analysis. In the nitrate complex, one nitrate is encapsulated in a selective orientation forming a C3 symmetric complex, which is bonded to three protonated secondary amines with six NH···O bonds. The anion is coordinated in a plane perpendicular to the principal rotation axis passing through the tertiary nitrogen of the receptor and the nitrogen of the encapsulated nitrate. High-level DFT calculations support the crystallographic results demonstrating that an adduct with trigonal binding of three oxygen atoms is more stable than that of one oxygen atom of the encapsulate nitrate. On the other hand, in the structure of the iodide complex, all three iodides lie outside the cavity. 1H NMR titration studies indicate that the receptor forms a 1:1 complex with nitrate with a binding constant of K = 315 M−1 in chloroform, showing a moderate selectivity over halides and perchlorate.
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影响因子:
15
作者:
Gale, PA;Sessler, JL;Lynch, V
通讯作者:
Lynch, V
影响因子:
2.6
作者:
Sang, Rul-Li;Xu, Li
通讯作者:
Xu, Li
影响因子:
4.6
作者:
Hossain, A;Liljegren, JA;Bowman-James, K
通讯作者:
Bowman-James, K
DOI:
10.1107/s1600536809039166
发表时间:
2009-11-01
影响因子:
0.9
作者:
Portis, Bobby;Dey, Kalpana R.;Hossain, Md. Alamgir
通讯作者:
Hossain, Md. Alamgir
影响因子:
7.4
作者:
Qian, QS;Wilson, GS;Girault, HH
通讯作者:
Girault, HH