(2,2′-Biquinoline-κ2N,N′)dibromidopalladium(II)

Ha, K.

doi:10.1107/S1600536812015425

Volume 68
Part 5
Page m618
May 2012

Received 4 April 2012
Accepted 9 April 2012
Online 18 April 2012

Key indicators
Single-crystal X-ray study
T = 200 K
Mean (C-C) = 0.008 Å
R = 0.028
wR = 0.070
Data-to-parameter ratio = 15.0
Details

(2,2'-Biquinoline-²N,N')dibromidopalladium(II)

Kwang Ha ^a ^*

^aSchool of Applied Chemical Engineering, The Research Institute of Catalysis, Chonnam National University, Gwangju 500-757, Republic of Korea
Correspondence e-mail: hakwang@chonnam.ac.kr

The Pd^II ion in the title complex, [PdBr₂(C₁₈H₁₂N₂)], is four-coordinated in a distorted square-planar environment by the two N atoms from the chelating 2,2'-biquinoline (Biqu) ligand and two mutually cis Br^- anions. The Biqu ligand is not planar, the dihedral angle between the quinoline systems being 17.2 (2)°. In the crystal, the complex molecules are connected by C-HBr hydrogen bonds, forming chains along the c axis. When viewed down the b axis, successive chains are stacked in opposite directions. Intramolecular C-HBr hydrogen bonds are also observed.

Related literature

For the crystal structure of the related chlorido Pd^II complex [PdCl₂(Biqu)], see: Muranishi et al. (2005).

Experimental

Crystal data

[PdBr₂(C₁₈H₁₂N₂)]
M_r = 522.50
Triclinic, $[P \overline 1]$
a = 8.9390 (5) Å
b = 9.2187 (5) Å
c = 11.1486 (6) Å
= 72.398 (1)°
= 69.318 (1)°
= 87.258 (1)°
V = 817.47 (8) Å³
Z = 2
Mo K radiation
= 6.02 mm^-1
T = 200 K
0.17 × 0.12 × 0.11 mm

Data collection

Bruker SMART 1000 CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2000) T_min = 0.813, T_max = 1.000
5100 measured reflections
3126 independent reflections
2612 reflections with I > 2(I)
R_int = 0.018

Refinement

R[F² > 2(F²)] = 0.028
wR(F²) = 0.070
S = 1.12
3126 reflections
208 parameters
H-atom parameters constrained
_max = 0.67 e Å^-3
_min = -0.65 e Å^-3

Table 1
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C2-H2Br1	0.95	2.73	3.252 (5)	116
C14-H14Br1ⁱ	0.95	2.90	3.754 (5)	150
C17-H17Br2	0.95	2.85	3.261 (5)	107
Symmetry code: (i) x, y, z-1.

Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RK2351 ).

Acknowledgements

This work was supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-0030747).

References

Bruker (2000). SADABS, SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.
Muranishi, Y., Wang, Y., Odoko, M. & Okabe, N. (2005). Acta Cryst. C61, m307-m310.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.

metal-organic compounds

(2,2'-Biquinoline-2N,N')dibromidopalladium(II)