1912

Crystal and molecular structure of the yellow form of chloro (2,2':6',2''-terpyridine) platinum (II) chloride dihydrate, [Pt(terpy)Cl]$Cl.2H_2O$

The synthesis, characterization, and X-ray crystal structure of the yellow dimorph, [Pt(terpy)Cl]$Cl.2H_2O$, are reported. The yellow acicular crystals are monoclinic: space group $P2_1/n$, a = 6.908(3) Â, b = 17.06700(11) Â, c = 13. 8390(10) Â, $beta$ = 98.607(4)°, and $D_{calc}$ =2.204 Mg $m^{-3}$ for Z = 4. The cation consists of platinum coordinated to tridentate terpyridine ligand and to chloride ion. The coordination geometry is essentially square-planar with distortions arising from the constraints of the terpyridine ligand. Bond distances are within the acceptable limits of predicted values. The cations stack in a head-to-tail orientation with an intermolecular Pt-Pt distance of 3.39 Â

PDF

___

1. M. Howe-Grant, K.C. Wu, W.R. Bauer, and S.J. Lippard, Biochemistry, 15, 4339 (1976).
2. Y.S. Wong and S.J. Lippard, J. Chem. Soc. Chem. Comm., 825 (1977).
3. H.K. Yip, L.K. Cheng, K.K. Cheung and C.M. Che, J. Chem. Soc. Dalton Trans. 2933 (1993).
4. G. Annibale, M. Brandolisio and B. Pitteri, Polyhedron, 14, 451 (1995).
5. J.W. Pfugrath and A. Messerschmidt, MADNES. Distributed by Delft Instruments, Delft, The Netherlands, 1989
6. J.A. Darr, S.R. Drake, M.B. Hursthouse and K. M.A. Malik, Inorg. Chem., 32, 5704 (1993).
7. A.I. Karaulov, ABSMAD. Program for FAST Data Processing. University of Wales, Cardiff, Wales, 1991.
8. G.M. Sheldrick, Acta Cryst, A46, 467 (1990).
9. G.M. Sheldrick, SHELXL93. Program for the Refinement of Crystal Structures. University of Gottingen, Germany, 1993.
10. L.J. Farrugia, J. Appl. Cryst., 32, 837 (1999).
11. R.D. Gillard, A. Sengul and A. Oldroyd, Transition Met. Chem., 26, 339 (2001).
12. G.M. Intille, C.E. Pfluger and W.A. Baker, JR, J. Cryst. Mol. Struct., 3, 47 (1973).
13. K.W. Jennette, T.J. Gill, J.A. Sadownick and S.J. Lippard, J. Am. Chem. Soc., 98, 6159 (1976).
14. R.S. Osborn and D. Rogers, J. Chem. Soc. Dalton Trans, 1002 (1974).