11 P. G. Jones, Acta Crystallogr., Sect. C., 1993, 49, 1148.
neutral polymeric chains in the solid state can explain the
unsuccessful attempts to prepare the corresponding 3 : 1
adducts.
12 G. A. Bowmaker, Effendy, P. J. Harvey, P. C. Healy, B. W. Skelton
and A. H. White, J. Chem. Soc., Dalton Trans., 1996, 2449.
13 M. Camalli and F. Caruso, Inorg. Chim. Acta, 1988, 144, 205.
14 A. Del Zotto, P. Di Bernardo, M. Tolazzi, G. Tomat and P.
Zanonato, J. Chem. Soc., Dalton Trans., 1993, 3009.
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19 S. Sailaja and M. V. Rajasekharan, Inorg. Chem., 2000, 39, 4586.
20 C.-T. Chen and K. S. Suslick, Coord. Chem. Rev., 1993, 128, 293.
21 O. Kahn and C. J. Martínez, Science, 1998, 279, 44.
22 M. Bertelli, L. Carlucci, G. Ciani, D. M. Proserpio and A. Sironi,
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25 S. L. James, D. M. P. Mingos, A. J. P. White and D. J. Williams,
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While the 1 : 1 complexes of silver() halides with pendant tri-
phosphines as CP3 and NP3 show the same coordination mode
of the ligand through the 3 P atoms, the structures in solution
of the 1 : 1 nitrate derivatives are strongly dependent on the
phosphineused, revealingAgP2, AgP3 ϩAgP4 andAgP3 environ-
ments for CP3, PP3 and NP3 complexes, respectively, in consist-
ence with the formation of a dinuclear cationic system in the
case of PP3. The 2 : 1 and 3 : 1 complexes of silver() nitrate with
these triphosphines involve the participation of nitrate anion as
coordinating ligand and convert into the corresponding 1 : 1
complex by addition of phosphine. The crystal structures of the
2 : 1 adducts of silver() halides with CP3, Ag2(CP3)X2 (X = Cl,
Br, I), consist of two infinite zigzag (X = Cl, I) or four linear
chains (X = Br) which run along the unit cell. Silver() is three-
and four-coordinate and bridged by two halogen atoms. The
zigzag arrangement (X = Cl, I) generates cavities with appropri-
ate size to accommodate solvent molecules. Further additions
of AgX to these 2 : 1 adducts did not lead to the formation of
Ag3(CP3)X3 complexes.
29 M. M. Taqui Khan and E. Rama Rao, Polyhedron, 1988, 7, 29.
30 L. Sacconi and I. Bertini, J. Am. Chem. Soc., 1968, 90, 5443.
31 Bruker, SMART and SAINT, Area Detector Control and
Integration Software, Bruker Analytical X-ray Instruments Inc.,
Madison, WI, USA, 1997.
32 G. M. Sheldrick, SADABS, Program for Empirical Absorption
Correction of Area Detector Data, University of Göttingen,
Germany, 1997.
Acknowledgements
We thank Xunta de Galicia for financial support. Crystallo-
graphic data for complex 6 were measured at the University of
Edinburgh, UK, and intensity measurements of crystals for
complexes 8, 9 and 10 were performed at the Unidade de Raios
X, RIAIDT, University of Santiago de Compostela, Spain.
33 G. M. Sheldrick, Acta Crystallogr., Sect. A, 1990, 46, 467.
34 G. M. Sheldrick, SHELXL-97, Program for the Refinement of
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