Platinum(II) Complexes Incorporating Five- and Six-Membered Cyclic Phosphine Ligands 69
NMR (CDCl3) δ 1.01 (broad, d, 2JPH = 5.6, 6H, CH3),
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1.34–2.48 (m, 12H, CH2), 7.29–7.74 (m, 10H, Ar);
FAB, [M–Cl]+
= 585.1148, C22H30ClP2Pt requires
found
585.1138 for the 35Cl and the 194Pt isotopes.
Compound 8b: Yield: 81%. 31P NMR (CDCl3)
δ 14.5 (JPt−P = 3512); 1H NMR (CDCl3) δ 0.72 (d, JHH
=
5.6, 12H, CH3), 2.04–2.47 (m, 12H, CH2, CH), 7.35–
7.85 (m, 10H, Ar); FAB, [M–Cl]+
= 613.1474,
found
C22H34ClP2Pt requires 613.1451 for the 35Cl and the
194Pt isotopes.
Compound 11: Yield: 96%. 31P NMR (CDCl3)
1
δ −25.3 (JPt−P = 3602); H NMR (CDCl3) δ 2.33 (s,
12H, C3 CH3), 6.28 (d, 2JPH = 18.1, 4H, CH ), 7.21–
7.86 (m, 10H, Ar); FAB, [M–Cl]+
= 792.9614,
found
C28H26Cl5P2Pt requires 792.9579 for the 35Cl isotopes
and for the 194Pt isotope.
Compound 15: Yield: 30%. 31P NMR (CDCl3)
1
δ −14.7 (JPt−P = 3567); H NMR (CDCl3) δ 1.55 (s,
6H, CH3), 1.98–3.24 (m, 12H, CH2), 7.34–7.65 (m,
10H, Ar).
CALCULATIONS
Stereostructures of selected examples of the plat-
inum complexes were evaluated by the B3LYP/6-
31G(d) and in respect of the platinum atom, by
the LANL2DZ ECP methods implemented in Gaus-
sian’03 [41]. The force matrices of the optimized
structures were found to be positive definite. The
most favorable structures of complexes 4a, 4b, 8a,
8b, 11, and 15 together with the relevant geometrical
data are shown in Figs. 1–6, respectively. Semiem-
pirical calculations were performed by the PMG
method [34] implemented in MOPAC 2009. 30 struc-
tures were analyzed and described by the software
MOLDEN [42].
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Hanusz, M.; Simon, K.; Imre, T.; Luda´nyi, K. Tetra-
hedron: Asymmetry 2005, 16, 4015.
ACKNOWLEDGMENTS
[22] Keglevich, G.; Kere´nyi, A.; Mayer, B.; Ko¨rtve´lyesi, T.;
Luda´nyi, K. Transit Metal Chem 2008, 33, 505.
[23] Keglevich, G.; Szelke, H.; Kere´nyi, A.; Imre, T. Transit
Metal Chem 2006, 31, 306.
[24] Keglevich, G.; Kere´nyi, A.; Szelke, H.; Luda´nyi,
K.; Ko¨rtve´lyesi, T. J Organomet Chem 2006, 691,
5038.
T.K. is grateful for the Hungarian Supercomputer
Centre (NIIF and HPC Szeged) for the computa-
tional facility. The authors are grateful to Professor
Emeritus Dr Harry R. Hudson (London Metropoli-
tan University) for his advice.
[25] Kere´nyi, A.; Balassa, A.; Ko¨rtve´lyesi, T.; Luda´nyi, K.;
Keglevich, G. Transit Metal Chem 2008, 33, 459.
[26] Keglevich, G.; Petneha´zy, I.; Miklo´s, P.; Alma´sy, A.;
To´th, G.; To¨ke, L.; Quin, L. D. J Org Chem 1987, 52,
3983.
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Heteroatom Chemistry DOI 10.1002/hc