Sain, Saugata ; Maji, Tapas Kumar ; Mostafa, Golam ; Lu, Tian-Huey ; Chaudhuri, Nirmalendu Ray (2003) Three new thiocyanato-bridged complexes of cadmium(II): syntheses, X-ray crystal structures and thermal properties Journal of Coordination Chemistry, 56 (13). pp. 1157-1168. ISSN 0095-8972
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Official URL: https://www.tandfonline.com/doi/abs/10.1080/009589...
Related URL: http://dx.doi.org/10.1080/00958970310001601794
Abstract
Three new thiocyanato-bridged polymers of cadmium(II), [Cd(me4dpt)(SCN)2] n (1) [me4dpt = 3,3′-iminobis(N,N-dimethylpropylamine], [Cd(me2tn)(SCN)2] n (2) (me2tn = N,N′-dimethyl-1,3-propanediamine) and [{amphyH} {Cd(SCN)3}] n (3) (ampyH = 4-aminopyridinium cation), have been synthesized and their molecular structures determined through X-ray crystallography. In Complex 1 each square pyramidal mononuclear fragment is H-bonded (N − H…S) to form a 1D supramolecular chain. Complex 2 is a 1D coordination polymer in which each distorted octahedral cadmium(II) ion is linked with the four bridging thiocyanates and one diamine. The structure of 3 reveals anionic [Cd(SCN)3]− zigzag chains arranged in an approximately hexagonal array with the 4-aminopyridinum cations occupying triangular channels. Each chain is H-bonded (N−H…N) to form a 2D supramolecular network. Upon heating, 1 and 2 melt and transform to transparent solid masses at ambient temperature over a few days. On scratching, these turn to a fine powder. This phenomenon is repeatable. Complex 3 upon heating loses a 4-aminopyridine molecule and transforms to [H][Cd(SCN)3] at ˜195°C.
Item Type: | Article |
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Source: | Copyright of this article belongs to Taylor and Francis Ltd. |
Keywords: | Cadmium(II), Thiocyanato-Bridged Complexes, Crystal Structures, Thermal Studies |
ID Code: | 114732 |
Deposited On: | 30 May 2018 10:18 |
Last Modified: | 30 May 2018 10:18 |
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