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Issue 29, 2016
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Selective formation of silver(i) bis-phospholane macrocycles and further evidence that gold(i) is smaller than silver(i)

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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)

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Supplementary files

Article information


Submitted
09 Mar 2016
Accepted
18 May 2016
First published
18 May 2016

This article is Open Access

Dalton Trans., 2016,45, 11644-11649
Article type
Paper

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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