
TY  - JOUR
A1  - Baker, LJ 
A1  - Bowmaker, GA 
A1  - Effend, y 
A1  - Skelton, BW 
A1  - White, AH 
T1  - Structure of [(tmpp)<sub>2</sub>Ag]<sup>+</sup><sub>2</sub>[Ag<sub>5</sub>I<sub>7</sub>]<sup>2-</sup>; an Unusual Ionic Adduct of Tris(2,4,6-trimethoxyphenyl)phosphine (tmpp) With Silver(I) Iodide
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1992
VL  - 45
IS  - 11
SP  - 1909
EP  - 1917
KW  - 
UR  - https://doi.org/10.1071/CH9921909 
N2  - A single-crystal structure determination is reported for [( tmpp )2Ag]+2 [Ag5I7]2-, a product isolated from the reaction of the highly basic, sterically hindered tertiary phosphine ligand tris (2,4,6-trimethoxypheny1) phosphine ( tmpp ) with silver(I) iodide. This complex is triclinic, P1, a 22.01(2), b 19.98(1), c 16.48(1) Å , &#945; 94.49(6), &#946; 92.46(7), &#947; 116.76(5)',Z 2; R was 0.11 for 3436 'observed' reflections. The asymmetric unit contains two crystallographically inequivalent [( tmpp )2Ag]+ cations in which the silver atoms are quasi-linearly coordinated to two phosphorus atoms with P-Ag-P angles of 175.9(9) and 179(1)&#176;, and a mean Ag-P distance of 2.38 Å . The anion has a novel one-dimensionally polymeric structure which is based on a double-stranded 'ladder' polymer of AgI units to which are bonded one I- and one AgI2-unit for every four AgI units. In the resulting polymer, all silver atoms are four-coordinate, while iodide coordination numbers of two, three and four are observed, with associated Ag-I distances of 2.75-2.86(1), 2.72-2.91(1) and 2.90-3-08(1) Å respectively. 
ER  -

