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Crystal structures of N,N′-bis(thiophen-2-ylmethyl)ethane-1,2-diaminium hydrochloride and of its [AuCl4]− salt solved by powder diffraction

Published online by Cambridge University Press:  15 August 2014

Silvioney A. Silva ,
Norberto Masciocchi  and
Alexandre Cuin
Silvioney A. Silva
Affiliation:
LQBin, Laboratório de Química BioInorgânica, Departamento de Química, Instituto de Ciências Exatas, UFJF – 36036-330, Juiz de Fora, MG, Brazil
Norberto Masciocchi
Affiliation:
Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, 22100Como, Italy
Alexandre Cuin*
Affiliation:
LQBin, Laboratório de Química BioInorgânica, Departamento de Química, Instituto de Ciências Exatas, UFJF – 36036-330, Juiz de Fora, MG, Brazil
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected], [email protected]
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Abstract

Preparation, analytical characterization, and crystal structures of N,N′-bis(thiophen-2-ylmethyl)ethane-1,2-diaminium hydrochloride (1) and of its gold derivative, N,N′-bis(thiophen-2-ylmethyl)ethane-1,2-diaminium tetrachloroaurate(III) (2) are reported. Compound (1) was obtained by reduction of the Schiff base N,N′-bis(thiophen-2-ylmethyl)ethane-1,2-diamine followed by HCl solution addition, whereas compound (2) was prepared reacting (1) with K[AuCl4] in aqueous solution. Compound (1) crystallizes in the orthorhombic system with space group Iba2 and cell parameters a = 29.856(1), b = 5.1372(2), and c = 10.1635(4) Å. Crystals of (2) belong to the monoclinic system with space group P21/c and cell parameters a = 11.0829(1), b = 9.5852(1), c = 11.6054(2) Å, and β = 75.49(1)°. Both structures contain diprotonated organic moieties, counterbalanced by hydrogen-bonded Cl−, or [AuCl4]− ions, in compounds (1) and (2), respectively.

Keywords

goldpowder diffraction2-thiophenecarboxaldehydecrystal structure
Type
New Diffraction Data
Information
Powder Diffraction , Volume 29 , Issue 3 , September 2014 , pp. 300 - 306
Copyright
Copyright © International Centre for Diffraction Data 2014 

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