Issue 29, 2016

Selective formation of silver(i) bis-phospholane macrocycles and further evidence that gold(i) is smaller than silver(i)

Abstract

A new synthetic approach to highly flexible bis-phospholanes from 1-benzylphospholane (1) as starting material is described. Silver(I) macrocycles containing 16 ([Ag2(μ-3a)2](BF4)2, 4), 20 ([Ag2(μ-3b)2](BF4)2, 5), 24 ([Ag2(μ-3c)2](BF4)2, 6), and 28 ([Ag2(μ-3d)2](BF4)2, 7) atoms in the ring were obtained in one step from AgBF4 and the respective bis-phospholane (C4H8P)(CH2)n(PC4H8) (n = 5, 7, 9, 11; 3a–d) in excellent yields. Comparison of 6 with the previously reported isomorphous complex [Au2(μ-3c)2](BF4)2 gave further evidence that gold(I) is significantly smaller than silver(I). All complexes were fully characterized by NMR and IR spectroscopy, mass spectrometry, and X-ray diffraction.

Graphical abstract: Selective formation of silver(i) bis-phospholane macrocycles and further evidence that gold(i) is smaller than silver(i)

Supplementary files

Article information

Article type
Paper
Submitted
09 Mar 2016
Accepted
18 May 2016
First published
18 May 2016
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2016,45, 11644-11649

Selective formation of silver(I) bis-phospholane macrocycles and further evidence that gold(I) is smaller than silver(I)

M. Streitberger, A. Schmied, R. Hoy and E. Hey-Hawkins, Dalton Trans., 2016, 45, 11644 DOI: 10.1039/C6DT00945J

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