116
B.-b. Tang et al. / Journal of Molecular Structure 984 (2010) 111–116
molecules act as pillars to connect and stabilize the overall structure.
Further, these 2D structures extended to 3D network by hydrogen
bonding from O–Hꢁ ꢁ ꢁO [O(6B)ꢁ ꢁ ꢁH(4F) = 2.262 Å, O(4C)ꢁ ꢁ ꢁO(6B) =
2.900 Å, O(4C)–H(4F)ꢁ ꢁ ꢁO(6B) = 169.4°]. The hydrogen bond lengths
and angles are collected in Table 3.
Cambridge Crystallographic Data Centre as supplementary publi-
cation numbers: CCDC_757897 (1), CCDC_757900 (2),
CCDC_757899 (3), CCDC_757898 (4), CCDC_757896 (H2L). Copies
of the data can be obtained free of charge on application to CCDC,
12, Union Road, Cambridge CB2 1EZ, UK (fax: +44 1223 336 033; E-
mail: deposit@ccdc.cam.ac.uk). Supplementary data associated
with this article can be found, in the online version, at
In complex 4, the uncoordinated phenolic oxygen atom O(1)
acts as a H-bonding donor to N(1) and a H-bonding acceptor to
C(17) atom in construction of supramolecular architecture. A
strong intermolecular H-bonding exists between the phenolic oxy-
gen atom O(1) and the amido nitrogen atom N(1B) with O–Hꢁ ꢁ ꢁN
type [N(1B)ꢁ ꢁ ꢁH(1B) = 1.855 Å, N(1B)ꢁ ꢁ ꢁO(1) = 2.686 Å, O(1)–
H(1B)ꢁ ꢁ ꢁN(1B) = 165.2°], which link the molecules to exhibit 2D
supramolecular structure. The resulting 2D supramolecular struc-
ture is held together via weak non-conventional H-bonding C–
HꢁꢁꢁO [O(1B)ꢁ ꢁ ꢁH(17C) = 2.559 Å, C(17)ꢁ ꢁ ꢁO(1B) = 3.409 Å, C(17)–
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Acknowledgments
We thank the National Science Council of the People’s Republic
of China for supporting this research (Nos. 20571011, 20771014)
and the specialized research fund for the doctoral program of higher
education, State Education Ministry of China (20091101110038).
Appendix A. Supplementary material
Crystallographic data (excluding structure factors) for the
structure(s) reported in this paper have been deposited with the