Bis(perchlorato-κO)tetra­kis[1-(2-pyridyl)-4-(4-pyridylmethyl-κN)piperazine]cadmium(II)

Farnum, G.A.; LaDuca, R.L.

doi:10.1107/S1600536809004437

Volume 65
Part 3
Page m274
March 2009

Received 2 February 2009
Accepted 6 February 2009
Online 13 February 2009

Key indicators
Single-crystal X-ray study
T = 173 K
Mean (C-C) = 0.007 Å
R = 0.041
wR = 0.084
Data-to-parameter ratio = 17.8
Details

Bis(perchlorato-O)tetrakis[1-(2-pyridyl)-4-(4-pyridylmethyl-N)piperazine]cadmium(II)

Gregory A. Farnum ^a and Robert L. LaDuca ^a ^*

^aLyman Briggs College, Department of Chemistry, Michigan State University, East Lansing, MI 48825, USA
Correspondence e-mail: laduca@msu.edu

In the title compound, [Cd(ClO₄)₂(C₁₅H₁₈N₄)₄], the Cd^II ion is coordinated in a slightly distorted octahedral environment by two trans monodentate perchlorate ligands and four 1-(2-pyridyl)-4-(4-pyridylmethyl)piperazine (pmpp) ligands. In the crystal structure, molecules are organized into layers parallel to the ab plane by C-HO interactions. Similar interactions promote the stacking of these layers into the three-dimensional crystal structure.

Related literature

For a silver nitrate supramolecular complex and the synthesis of pmpp, see: Farnum et al. (2009).

Experimental

Crystal data

[Cd(ClO₄)₂(C₁₅H₁₈N₄)₄]
M_r = 1328.64
Monoclinic, C c
a = 34.958 (4) Å
b = 9.1736 (11) Å
c = 24.153 (3) Å
= 126.8740 (10)°
V = 6196.4 (13) Å³
Z = 4
Mo K radiation
= 0.51 mm^-1
T = 173 K
0.20 × 0.16 × 0.12 mm

Data collection

Bruker SMART 1K diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 2007) T_min = 0.875, T_max = 0.941
34115 measured reflections
13967 independent reflections
11273 reflections with I > 2(I)
R_int = 0.052

Refinement

R[F² > 2(F²)] = 0.041
wR(F²) = 0.084
S = 0.98
13967 reflections
784 parameters
2 restraints
H-atom parameters constrained
_max = 0.70 e Å^-3
_min = -0.41 e Å^-3
Absolute structure: Flack (1983), with 6755 Friedel pairs
Flack parameter: -0.041 (13)

Table 1
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C29-H29O1ⁱ	0.95	2.54	3.406 (6)	152
C54-H54AO7ⁱⁱ	0.99	2.57	3.348 (5)	135
Symmetry codes: (i) $[x+{\script{1\over 2}}, y+{\script{1\over 2}}, z]$ ; (ii) $[x-{\script{1\over 2}}, -y+{\script{3\over 2}}, z-{\script{1\over 2}}]$ .

Data collection: SMART (Bruker, 2006); cell refinement: SAINT-Plus (Bruker, 2006); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: CrystalMaker (Palmer, 2007); software used to prepare material for publication: SHELXL97.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH2771 ).

Acknowledgements

The authors gratefully acknowledge the donors of the American Chemical Society Petroleum Research Fund for funding this work.

References

Bruker (2006). SMART and SAINT-Plus. Bruker AXS Inc., Madison, Wisconsin, USA.
Farnum, G. A., Knapp, W. R. & LaDuca, R. L. (2009). Polyhedron, 28, 291-299.
Flack, H. D. (1983). Acta Cryst. A39, 876-881.
Palmer, D. (2007). CrystalMaker. CrystalMaker Software Ltd, Bicester, Oxfordshire, England.
Sheldrick, G. M. (2007). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.

metal-organic compounds