Bis{2-[(2,4,6-trimethyl­phen­yl)imino­methyl]pyrrol-1-ido}palladium(II)

Imhof, W.

doi:10.1107/S1600536813000573

Volume 69
Part 2
Page m96
February 2013

Received 30 November 2012
Accepted 7 January 2013
Online 12 January 2013

Key indicators
Single-crystal X-ray study
T = 183 K
Mean (C-C) = 0.004 Å
R = 0.032
wR = 0.082
Data-to-parameter ratio = 18.3
Details

Bis{2-[(2,4,6-trimethylphenyl)iminomethyl]pyrrol-1-ido}palladium(II)

Wolfgang Imhof ^a ^*

^aUniversity Koblenz-Landau, Institute for Integrated Natural Sciences, Universitätsstrasse 1, 56070 Koblenz, Germany
Correspondence e-mail: Imhof@uni-koblenz.de

The title compound, [Pd(C₁₄H₁₅N₂)₂], is a square-planar palladium complex composed of two deprotonated pyrrole-2-carbaldimine ligands coordinating a central Pd^II atom. In the crystal, three crystallographically independent complex molecules are observed, one of which is located in a general position, whereas the Pd^II atoms of the other molecules are situated on crystallographic inversion centers. The aromatic substituents at the imine N atoms in the three molecules show dihedral angles of 87.6 (7)/83.64 (7), 74.3 (7) and 88.3 (7)° with respect to the corresponding PdN₄ plane.

Related literature

For structural analyses of the related ligand N-((1H-pyrrol-2-yl)methylene)aniline, see: Gomes et al. (2010); Crestani et al. (2011) and of of the free ligand N-((1H-pyrrol-2-yl)methylene)-2,4,6-trimethylaniline, see: Imhof (2013). For the structure of the corresponding nickel complex, see: Anderson et al. (2006), the closely related 2,6-dimethyl complex, see: Pérez-Puente et al. (2008), the closely related 2,6-diisopropyl complex, see: Liang et al. (2004) and a related nickel complex with only one pyrrole-carbaldimine ligand, see: Bellabarba et al. (2003).

Experimental

Crystal data

[Pd(C₁₄H₁₅N₂)₂]
M_r = 528.96
Triclinic, $[P \overline 1]$
a = 13.4342 (2) Å
b = 13.7395 (3) Å
c = 13.9932 (3) Å
= 89.174 (11)°
= 77.075 (12)°
= 77.159 (12)°
V = 2452.76 (19) Å³
Z = 4
Mo K radiation
= 0.78 mm^-1
T = 183 K
0.3 × 0.3 × 0.2 mm

Data collection

Nonius KappaCCD diffractometer
18633 measured reflections
11178 independent reflections
9176 reflections with I > 2(I)
R_int = 0.025

Refinement

R[F² > 2(F²)] = 0.032
wR(F²) = 0.082
S = 1.04
11178 reflections
610 parameters
H-atom parameters constrained
_max = 1.17 e Å^-3
_min = -0.80 e Å^-3

Data collection: COLLECT (Nonius, 1998); cell refinement: DENZO (Otwinowski & Minor, 1997); data reduction: DENZO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: publCIF (Westrip, 2010).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: NC2300 ).

References

Anderson, C. E., Batsanov, A. S., Dyer, P. W., Fawcett, J. & Howard, J. A. K. (2006). Dalton Trans. pp. 5362-5378.
Bellabarba, R. M., Gomes, P. T. & Pascu, S. I. (2003). Dalton Trans. pp. 4434-4436.
Crestani, M. G., Manbeck, G. F., Brennessel, W. W., McCormick, T. M. & Eisenberg, R. (2011). Inorg. Chem. 50, 7172-7188.
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.
Gomes, C. S. B., Suresh, D., Gomes, P. T., Veiros, L. F., Duarte, M. T., Nunes, T. G. & Oliveira, M. C. (2010). Dalton Trans. 39, 736-748.
Imhof, W. (2013). Acta Cryst. E69, o113.
Liang, H., Liu, J., Li, X. & Li, Y. (2004). Polyhedron, 23, 1619-1627.
Nonius (1998). COLLECT, Nonius BV, Delft, The Netherlands.
Otwinowski, Z. & Minor, W. (1997). Methods in Enzymology, Vol. 276, Macromolecular Crystallography, Part A, edited by C. W. Carter Jr & R. M. Sweet, pp. 307-326. New York: Academic Press.
Pérez-Puente, P., de Jesús, E., Flores, J. C. & Gómez-Sal, P. (2008). J. Organomet. Chem. 693, 3902-3906.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.

metal-organic compounds