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Crystal structures of trichlorido(4-methylpiperidine) gold(III) and two polymorphs of tribromido-(4-methylpiperidine)gold(III).

Authors :
Döring, Cindy
Jones, Peter G.
Source :
Acta Crystallographica Section E: Crystallographic Communications; Apr2024, Vol. 80 Issue 5, p476-480, 14p
Publication Year :
2024

Abstract

Trichlorido(4-methylpiperidine)gold(III), [AuCl<subscript>3</subscript>(C<subscript>6</subscript>H<subscript>13</subscript>N)], 1, crystallizes in Pbca with Z = 8. Tribromido(4-methylpiperidine)gold(III), [AuBr<subscript>3</subscript>(C<subscript>6</subscript>H<subscript>13</subscript>N)], 2, crystallizes as two polymorphs, 2a in Pnma with Z = 4 (imposed mirror symmetry) and 2b, which is isotypic to 1. The Au--N bonds trans to Cl are somewhat shorter than those trans to Br, and the Au--Cl bonds trans to N are longer than those cis to N, whereas the Au--Br bonds trans to N are slightly shorter than the cis bonds. The methyl and AuX<subscript>3</subscript> groups (X = halogen) occupy equatorial positions at the six-membered ring. The packing of all three structures involves chains of molecules with offset stacking of the AuX<subscript>3</subscript> moieties associated with short Au...X contacts; for 1 and 2b these are reinforced by N--H...X hydrogen bonds, whereas for 2a there are no classical hydrogen bonds and the chains are interconnected by Br...Br contacts. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20569890
Volume :
80
Issue :
5
Database :
Complementary Index
Journal :
Acta Crystallographica Section E: Crystallographic Communications
Publication Type :
Academic Journal
Accession number :
177305259
Full Text :
https://doi.org/10.1107/S2056989024002822