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Crystal structure of unsymmetrical α-di­imine palladium(II) complex cis-[{ArN=C(Me)–(Et)C=NAr}PdCl2] [Ar = 2,6-(iPr)2C6H3]

aDepartment of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA, and bDepartment of Chemistry, Tulane University, 6400 Freret Street, New Orleans, LA 70118, USA
*Correspondence e-mail: chandru@lamar.edu

Edited by G. S. Nichol, University of Edinburgh, Scotland (Received 6 June 2017; accepted 28 June 2017; online 7 July 2017)

The unsymmetrical α-di­imine ligand N-{2-[2,6-bis­(propan-2-yl)phenylimino]pentan-3-yl­idene}-2,6-bis­(propan-2-yl)aniline, [ArN=C(Me)—(Et)C=NAr] [Ar = 2,6-(iPr)2C6H3], (I), and the corresponding palladium complex, cis-(N-{2-[2,6-bis­(propan-2-yl)phenylimino]pentan-3-yl­idene}-2,6-bis­(propan-2-yl)aniline)di­chlor­ido­palladium(II) 1,2-di­chloro­ethane monosolvate, [PdCl2(C29H42N2)]·C2H4Cl2 or cis[PdCl2{I}], (II), have been synthesized and characterized. The crystal and mol­ecular structure of the palladium(II) complex have been established by single-crystal X-ray diffraction. The compound crystallized along with a 1,2-di­chloro­ethane solvent of crystallization. The coordination plane of the PdII atom shows a slight tetra­hedral distortion from square-planar, as indicated by the dihedral angle between the PdCl2 and PdN2 planes of 4.19 (8)°. The chelate ring is folded along the N⋯N vector by 7.1 (1)°.

1. Chemical context

α-Di­imines (or) 1,4-di­aza-1,3-butadienes (DAD) are one of the most versatile classes of chelating nitro­gen-donor ligands, and are well known to stabilize several transition metal complexes at various oxidation levels (Bart et al., 2005[Bart, S. C., Hawrelak, E. J., Lobkovsky, E. & Chirik, P. J. (2005). Organometallics, 24, 5518-5527.]; Greene et al., 2014[Greene, A. F., Chandrasekaran, P., Yan, Y., Mague, J. T. & Donahue, J. P. (2014). Inorg. Chem. 53, 308-317.]). Nickel and palladium complexes of α-di­imines are reported to be effective catalysts for various olefin polymerization and co-polymerization reactions (Ittel et al., 2000[Ittel, S. D., Johnson, L. K. & Brookhart, M. (2000). Chem. Rev. 100, 1169-1204.]). Furthermore, the polymer properties, topology and stability of these catalysts can be tuned by altering the steric and electronic properties of the α-di­imine ligands (Gates et al., 2000[Gates, D. P., Svejda, S. A., Onate, E., Killian, C. M., Johnson, L. K., White, P. S. & Brookhart, M. (2000). Macromolecules, 33, 2320-2334.]). These observations have motivated the synthesis of several nickel and palladium complexes with α-di­imine ligands containing various substituents at the imine nitro­gen atom (Nakamura et al., 2009[Nakamura, A., Ito, S. & Nozaki, K. (2009). Chem. Rev. 109, 5215-5244.]). α-Di­imine ligands may be conveniently prepared by condensation reactions between alkyl or aryl amine with 1,2-diketones. Most of the reported α-di­imine ligands possess molecular C2 symmetry, while very few unsymmetrical α-di­imine ligands, obtained by varying the substituents on the nitro­gen atom, have been reported (Jeon & Kim, 2008[Jeon, M. & Kim, S. Y. (2008). Polym. J. 40, 409-413.]). We report herein the synthesis and spectroscopic characterization of the unsymmetrical α-di­imine ligand [ArN=C(Et)—(Me)C=NAr], (I)[link], [Ar = 2,6-i(Pr)2C6H3] and the corresponding palladium complex cis-[PdCl2{I}] (II), where the α-di­imine ligand backbone contains methyl and ethyl substituents. The crystal structure of compound (II) has been established using single-crystal X-ray diffraction.

[Scheme 1]

2. Structural commentary

The mol­ecular structure of PdII complex (II), is presented in Fig. 1[link]. Compound (II) crystallized along with a solvent mol­ecule of 1,2-di­chloro­ethane, which is disordered over the two crystallographic positions. The mol­ecular structure of (II) revels the chelation of the α-di­imine ligand to the palladium(II) atom. The Pd1—N1 and Pd1—N2 distances are 2.0280 (19) and 2.0200 (18) Å, respectively, and are in the typical range for palladium α-di­imine complexes (Zou & Chen, 2016[Zou, W. & Chen, C. (2016). Organometallics, 35, 1794-1801.]). The C1—C2 bond length is 1.492 (3) Å, which is slightly shorter than a standard C—C bond length (1.54 Å; Chandrasekaran et al., 2014[Chandrasekaran, P., Greene, A. F., Lillich, K., Capone, S., Mague, J. T., DeBeer, S. & Donahue, J. P. (2014). Inorg. Chem. 53, 9192-9205.]), and similarly minimal elongation of the C1—N1 and C2—N2 bonds confirms the slight delocalization of the double bonds. As expected, the palladium(II) atom is in a distorted square-planar geometry, with an N2—Pd1—N1 angle of 79.01 (8)°. The coordination plane shows a slight tetra­hedral distortion from square-planar, as indicated by the dihedral angle between the Cl1–Pd1–Cl2 and N1–Pd1–N2 planes of 4.19 (8)°. The chelate ring is folded along the N1⋯N2 vector by 7.1 (1)°. The aryl substituents at N1 and N2 are nearly perpendicular to the metal–ligand plane, subtending dihedral angles of 81.82 (2)° (C6–C11 aryl ring) and 86.74 (2)° (C18–C23 aryl ring). The aryl substituents in square–planar α-di­imine complexes are anti­cipated to lie perpendicular to the metal–ligand plane due to steric repulsion.

[Figure 1]
Figure 1
Perspective view of palladium complex (II) with displacement ellipsoids drawn at the 50% probability level. All H atoms and solvent mol­ecule have been omitted for clarity.

3. Supra­molecular features

In the crystal lattice, the components are linked through weak C—H⋯Cl hydrogen-bonding inter­actions between the complex and solvent mol­ecule 1,2-dichloro­ethane (Table 1[link], Fig. 2[link]).

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
C3—H3B⋯Cl1i 0.98 2.67 3.604 (3) 160
C4—H4A⋯Cl1i 0.99 2.79 3.763 (3) 166
C15—H15⋯Cl4i 1.00 2.80 3.586 (3) 136
C21—H21⋯Cl1ii 0.95 2.74 3.633 (3) 156
Symmetry codes: (i) x+1, y, z; (ii) [-x+1, y-{\script{1\over 2}}, -z+{\script{3\over 2}}].
[Figure 2]
Figure 2
Hydrogen-bonding inter­actions in the crystal lattice.

4. Database survey

A search of the Cambridge Structure Database (Version 5.38 with updates Nov 2016; Groom et al., 2016[Groom, C. R., Bruno, I. J., Lightfoot, M. P. & Ward, S. C. (2016). Acta Cryst. B72, 171-179.]) confirmed that the PdII complex cis-[{ArN=C(Me)—(Et)C=NAr}PdCl2] (Ar = 2,6-(iPr)2C6H3) containing unsymmetrical α-di­imine ligands has not previously been structurally characterized. However, the crystal structures of several PdII complexes containing symmetrical α-di­imine ligands (IJONIE, Cope-Eatough et al., 2003[Cope-Eatough, E. K., Mair, F. S., Pritchard, R. G., Warren, J. E. & Woods, R. J. (2003). Polyhedron, 22, 1447-1454.]; FEGVOD, Coventry et al., 2004[Coventry, D. N., Batsanov, A. S., Goeta, A. E., Howard, J. A. K. & Marder, T. B. (2004). Polyhedron, 23, 2789-2795.]; EBEXAK, Tempel et al., 2000[Tempel, D. J., Johnson, L. K., Huff, R. L., White, P. S. & Brookhart, M. (2000). J. Am. Chem. Soc. 122, 6686-6700.]; APOFOC, Tian et al., 2016[Tian, J., He, X., Liu, J., Deng, X. & Chen, D. (2016). RSC Adv. 6, 22908-22916.]; TABSOH, Chang et al., 2016[Chang, Y.-C., Lee, Y.-C., Chang, M.-F. & Hong, F.-E. (2016). J. Organomet. Chem. 808, 23-33.]) have been reported. In all of these complexes, the PdII atom exhibits a slightly distorted square-planar geometry.

5. Synthesis and crystallization

Synthesis of [ArN=C(Me)—(Et)C=NAr] [Ar = 2,6-(iPr)2C6H3] (I). A 100 mL round-bottom flask containing a magnetic bar was charged with 2,3-penta­nedione (1 mL, 0.96 g, 9.6 mmol) and 2,6-diso­propyl­aniline (4.0 mL, 3.76 g, 21.2 mmol). Over this, 50 mL of MeOH was added followed by a few drops of formic acid. The reaction mixture was heated to 343 K for 12 h. It was then cooled to room temperature and the solvent removed under reduced pressure. The resulting yellow pasty solid was dissolved in 15 mL of pentane and stored at 248 K for 3 d, forming a yellow precipitate, which was isolated by filtration and then dried under vacuum, to afford the product as a yellow solid. Yield: 90% (3.63 g). 1H NMR (CDCl3): 1.08 (t, J = 7.8 Hz, 3H, CH2CH3), 1.15 (d, J = 6.8 Hz, 6H, iPr-CH3), 1.20 (d, J = 6.8 Hz, 6H, iPr-CH3), 1.39 (d, J = 6.7 Hz, 6H, iPr-CH3), 1.46 (d, J = 6.7 Hz, 6H, iPr-CH3), 2.05 (s, 3H, CH3), 2.43 (q, J = 7.6 Hz, 2H, CH2CH3), 2.93 (sep, J = 6.7 Hz, 2H, iPr-CH), 3.05 (sep, J = 6.8 Hz, 2H, iPr-CH), 7.08–7.26 (m, 6H, Ar-H). IR (cm−1): 2957 (m), 2926 (w), 2868 (w), 1631 (m), 1458 (w), 1433 (w), 1362 (m), 1323 (w), 1254 (w), 1183 (m), 1123 (m), 1056 (w), 934 (w), 792 (m), 761 (s), 688 (w). Analysis calculated for C29H42N2; C, 83.20; H, 10.11; N, 6.69. Found: C, 83.35; H, 10.07; N, 6.72.

Growing X-ray quality crystals of thw ligand by slow evaporation from various solvents such as hexane, diethyl ether, dicholoro­methane and toluene was unsuccessful.

Synthesis of cis[PdCl2{I}] (II). A di­chloro­methane (10 mL) solution of [Pd(COD)Cl2] (0.10 g, 0.35 mmol) was added dropwise to 5 mL di­chloro­methane solution of (I)[link] (0.15 g, 0.35 mmol) at room temperature. The reaction mixture was stirred for 4 h to give a clear yellow solution. The solvent was removed under reduced pressure, and the resulting yellow solid was washed with 3 × 5 mL of pentane and dried in vacuo, affording a yellow powder as the product. Yield: 85% (0.17 g). 1H NMR (CDCl3): 1.08 (t, J = 7.8 Hz, 3H, CH2CH3), 1.20 (d, J = 6.7 Hz, 12H, iPr-CH3), 1.52 (d, J = 6.7 Hz, 12H, iPr-CH3), 2.05 (s, 3H, CH3), 2.43 (q, J = 7.8 Hz, CH2CH3), 2.75 (sep, J = 6.8 Hz, 2H, iPr-CH), 2.93 (sep, J = 6.6 Hz, 2H, iPr-CH), 7.08–7.24 (m, 6H, Ar-H). IR (cm−1): 3031 (w), 2989 (w), 1523 (m), 1478 (m), 1448 (w), 1419 (m), 1341 (s), 1310 (w), 1247 (w), 1177 (w), 1088 (m), 994 (s), 906 (m), 865 (s), 823 (m), 791 (s), 767 (m). Analysis calculated for C29H42N2PdCl2; C, 58.44; H, 7.10; N, 4.70. Found: C, 58.86; H, 7.02; N, 4.94.

X-ray quality crystals of compound (II) were obtained by vapor diffusion of pentane over 1,2-di­chloro­ethane solution.

6. Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2[link]. H-atoms attached to carbon were placed in calculated positions (C—H = 0.95–1.00 Å). All were included as riding contributions with isotropic displacement parameters 1.2–1.5 times those of the parent atoms. The 1,2-di­chloro­ethane solvent mol­ecule is disordered over two resolved sites in an 0.8596 (15):0.1404 (15) ratio. The minor component was refined with restraints that its geometry approximate that of the major component.

Table 2
Experimental details

Crystal data
Chemical formula [PdCl2(C29H42N2)]·C2H4Cl2
Mr 694.90
Crystal system, space group Monoclinic, P21/c
Temperature (K) 150
a, b, c (Å) 8.7203 (12), 20.124 (3), 19.526 (3)
β (°) 100.405 (2)
V3) 3370.2 (8)
Z 4
Radiation type Mo Kα
μ (mm−1) 0.89
Crystal size (mm) 0.12 × 0.07 × 0.06
 
Data collection
Diffractometer Bruker SMART APEX CCD
Absorption correction Multi-scan (SADABS; Bruker, 2013[Bruker (2013). APEX2, SADABS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.])
Tmin, Tmax 0.75, 0.95
No. of measured, independent and observed [I > 2σ(I)] reflections 61138, 8905, 7064
Rint 0.066
(sin θ/λ)max−1) 0.684
 
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.036, 0.084, 1.02
No. of reflections 8905
No. of parameters 366
No. of restraints 3
H-atom treatment H-atom parameters constrained
Δρmax, Δρmin (e Å−3) 1.05, −0.72
Computer programs: APEX2 and SAINT (Bruker, 2013[Bruker (2013). APEX2, SADABS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.]), SHELXT (Sheldrick, 2015a[Sheldrick, G. M. (2015a). Acta Cryst. A71, 3-8.]), SHELXL2013 (Sheldrick, 2015b[Sheldrick, G. M. (2015b). Acta Cryst. C71, 3-8.]), Mercury (Macrae et al., 2006[Macrae, C. F., Edgington, P. R., McCabe, P., Pidcock, E., Shields, G. P., Taylor, R., Towler, M. & van de Streek, J. (2006). J. Appl. Cryst. 39, 453-457.]) and SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]).

Supporting information


Computing details top

Data collection: APEX2 (Bruker, 2013); cell refinement: SAINT (Bruker, 2013); data reduction: SAINT (Bruker, 2013); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2015b); molecular graphics: Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

cis-(N-{2-[2,6-bis(propan-2-yl)phenylimino]pentan-3-ylidene}-2,6-bis(propan-2-yl)aniline)dichloridopalladium(II) 1,2-dichloroethane monosolvate top
Crystal data top
[PdCl2(C29H42N2)]·C2H4Cl2F(000) = 1440
Mr = 694.90Dx = 1.370 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
a = 8.7203 (12) ÅCell parameters from 9868 reflections
b = 20.124 (3) Åθ = 2.3–29.0°
c = 19.526 (3) ŵ = 0.89 mm1
β = 100.405 (2)°T = 150 K
V = 3370.2 (8) Å3Block, orange
Z = 40.12 × 0.07 × 0.06 mm
Data collection top
Bruker SMART APEX CCD
diffractometer
8905 independent reflections
Radiation source: fine-focus sealed tube7064 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.066
Detector resolution: 8.3660 pixels mm-1θmax = 29.1°, θmin = 2.0°
φ and ω scansh = 1111
Absorption correction: multi-scan
(SADABS; Bruker, 2013)
k = 2727
Tmin = 0.75, Tmax = 0.95l = 2626
61138 measured reflections
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.036Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.084H-atom parameters constrained
S = 1.02 w = 1/[σ2(Fo2) + (0.0262P)2 + 4.3833P]
where P = (Fo2 + 2Fc2)/3
8905 reflections(Δ/σ)max = 0.001
366 parametersΔρmax = 1.05 e Å3
3 restraintsΔρmin = 0.72 e Å3
Special details top

Experimental. The diffraction data were obtained from 3 sets of 400 frames, each of width 0.5° in ω, collected at φ = 0.00, 90.00 and 180.00° and 2 sets of 800 frames, each of width 0.45° in φ, collected at ω = –30.00 and 210.00°. The scan time was 15 sec/frame.

Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2sigma(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. H-atoms attached to carbon were placed in calculated positions (C—H = 0.95 - 1.00 Å). All were included as riding contributions with isotropic displacement parameters 1.2 - 1.5 times those of the attached atoms. The dichloroethane solvent molecule is disordered over two resolved sites in an 86:14 ratio. The minor component was refined with restraints that its geometry appoximate that of the major component.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/UeqOcc. (<1)
Pd10.58521 (2)0.59694 (2)0.75141 (2)0.01564 (5)
Cl10.37729 (6)0.66529 (3)0.75421 (4)0.02564 (14)
Cl20.41985 (7)0.51846 (3)0.69488 (4)0.03261 (16)
N10.7481 (2)0.66321 (9)0.79623 (10)0.0149 (4)
N20.7819 (2)0.54249 (9)0.75778 (10)0.0161 (4)
C10.8916 (3)0.64435 (11)0.79990 (12)0.0169 (4)
C20.9110 (3)0.57412 (11)0.77849 (12)0.0164 (4)
C31.0301 (3)0.68623 (12)0.82792 (15)0.0255 (5)
H3A0.99730.73260.83090.038*
H3B1.10640.68320.79690.038*
H3C1.07740.67040.87440.038*
C41.0697 (3)0.54369 (12)0.78581 (13)0.0219 (5)
H4A1.14080.57570.76900.026*
H4B1.06350.50360.75600.026*
C51.1381 (4)0.52428 (17)0.86098 (18)0.0447 (8)
H5A1.13890.56320.89120.067*
H5B1.24490.50810.86340.067*
H5C1.07420.48920.87640.067*
C60.7112 (2)0.72682 (11)0.82331 (13)0.0185 (5)
C70.6592 (3)0.72574 (13)0.88714 (14)0.0244 (5)
C80.6266 (3)0.78723 (15)0.91504 (16)0.0360 (7)
H80.59450.78870.95900.043*
C90.6403 (3)0.84530 (15)0.87975 (18)0.0406 (8)
H90.61770.88650.89950.049*
C100.6868 (3)0.84447 (13)0.81571 (17)0.0341 (7)
H100.69350.88510.79170.041*
C110.7240 (3)0.78526 (12)0.78559 (14)0.0228 (5)
C120.6414 (3)0.66100 (14)0.92528 (14)0.0305 (6)
H120.63110.62450.89000.037*
C130.7856 (4)0.6460 (2)0.97959 (19)0.0546 (9)
H13A0.87620.64140.95670.082*
H13B0.76980.60461.00370.082*
H13C0.80370.68251.01340.082*
C140.4941 (4)0.6598 (2)0.95766 (19)0.0508 (9)
H14A0.50430.69230.99560.076*
H14B0.48020.61530.97600.076*
H14C0.40340.67110.92210.076*
C150.7721 (3)0.78374 (13)0.71450 (14)0.0273 (6)
H150.85560.74940.71650.033*
C160.8396 (4)0.84954 (16)0.69451 (19)0.0442 (8)
H16A0.75790.88360.68810.066*
H16B0.87940.84390.65100.066*
H16C0.92490.86340.73160.066*
C170.6363 (4)0.76249 (16)0.65765 (16)0.0384 (7)
H17A0.59810.71890.66930.058*
H17B0.67200.75980.61290.058*
H17C0.55200.79520.65440.058*
C180.7773 (3)0.47125 (11)0.74689 (13)0.0189 (5)
C190.7886 (3)0.44508 (12)0.68145 (14)0.0237 (5)
C200.7675 (3)0.37677 (13)0.67250 (16)0.0322 (6)
H200.77490.35740.62890.039*
C210.7363 (3)0.33683 (14)0.72531 (18)0.0382 (7)
H210.71870.29060.71750.046*
C220.7304 (3)0.36388 (13)0.78997 (17)0.0338 (7)
H220.71250.33540.82660.041*
C230.7499 (3)0.43164 (12)0.80269 (14)0.0233 (5)
C240.8220 (3)0.48775 (14)0.62187 (14)0.0321 (6)
H240.83670.53460.63890.038*
C250.6858 (4)0.4866 (2)0.56041 (18)0.0575 (10)
H25A0.66830.44100.54330.086*
H25B0.71030.51500.52300.086*
H25C0.59160.50320.57550.086*
C260.9727 (4)0.46537 (18)0.59885 (17)0.0437 (8)
H26A1.06020.46990.63790.066*
H26B0.99160.49310.55990.066*
H26C0.96270.41880.58400.066*
C270.7369 (3)0.46004 (14)0.87351 (15)0.0303 (6)
H270.78090.50610.87610.036*
C280.8298 (5)0.4201 (2)0.93406 (19)0.0575 (10)
H28A0.78370.37570.93520.086*
H28B0.82670.44300.97800.086*
H28C0.93820.41590.92760.086*
C290.5665 (4)0.46518 (17)0.88211 (18)0.0448 (8)
H29A0.50820.49160.84390.067*
H29B0.56080.48670.92660.067*
H29C0.52120.42060.88130.067*
C300.2422 (5)0.6816 (2)0.5728 (2)0.0542 (11)0.8596 (15)
H30A0.33800.65850.56520.065*0.8596 (15)
H30B0.27160.71240.61260.065*0.8596 (15)
C310.1302 (4)0.63193 (19)0.5906 (2)0.0400 (8)0.8596 (15)
H31A0.18510.60220.62740.048*0.8596 (15)
H31B0.09160.60440.54900.048*0.8596 (15)
Cl30.1657 (2)0.72810 (7)0.49755 (7)0.0786 (4)0.8596 (15)
Cl40.03082 (14)0.66888 (7)0.61983 (7)0.0674 (4)0.8596 (15)
C30A0.221 (3)0.6435 (9)0.5775 (14)0.0542 (11)0.1404 (15)
H30C0.18000.60540.54780.065*0.1404 (15)
H30D0.30910.62690.61270.065*0.1404 (15)
C31A0.0988 (15)0.6665 (12)0.6140 (9)0.0400 (8)0.1404 (15)
H31C0.12510.71160.63300.048*0.1404 (15)
H31D0.09270.63640.65350.048*0.1404 (15)
Cl3A0.2944 (13)0.7025 (4)0.5251 (4)0.0786 (4)0.1404 (15)
Cl4A0.0833 (8)0.6687 (4)0.5576 (4)0.0674 (4)0.1404 (15)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Pd10.01196 (8)0.01091 (8)0.02380 (10)0.00011 (6)0.00254 (6)0.00023 (7)
Cl10.0149 (2)0.0192 (3)0.0426 (4)0.0026 (2)0.0049 (2)0.0047 (3)
Cl20.0189 (3)0.0178 (3)0.0571 (5)0.0020 (2)0.0040 (3)0.0095 (3)
N10.0152 (8)0.0123 (9)0.0173 (9)0.0000 (7)0.0029 (7)0.0009 (7)
N20.0143 (8)0.0135 (9)0.0212 (10)0.0008 (7)0.0046 (8)0.0024 (8)
C10.0158 (10)0.0155 (11)0.0197 (11)0.0001 (8)0.0038 (9)0.0003 (9)
C20.0173 (10)0.0144 (11)0.0183 (11)0.0005 (8)0.0051 (9)0.0013 (9)
C30.0163 (11)0.0200 (12)0.0392 (15)0.0007 (9)0.0023 (11)0.0067 (11)
C40.0132 (10)0.0201 (12)0.0326 (14)0.0021 (9)0.0050 (10)0.0045 (10)
C50.0336 (16)0.0442 (19)0.053 (2)0.0115 (14)0.0008 (15)0.0008 (16)
C60.0129 (10)0.0150 (11)0.0268 (13)0.0009 (8)0.0017 (9)0.0033 (9)
C70.0209 (11)0.0260 (13)0.0254 (13)0.0028 (10)0.0015 (10)0.0062 (10)
C80.0333 (14)0.0381 (17)0.0370 (16)0.0069 (12)0.0075 (13)0.0174 (13)
C90.0378 (16)0.0240 (15)0.059 (2)0.0068 (12)0.0051 (15)0.0209 (14)
C100.0300 (14)0.0151 (13)0.0554 (19)0.0022 (10)0.0026 (13)0.0025 (12)
C110.0172 (11)0.0149 (11)0.0347 (14)0.0003 (9)0.0003 (10)0.0010 (10)
C120.0357 (14)0.0342 (15)0.0235 (13)0.0018 (12)0.0101 (12)0.0009 (11)
C130.049 (2)0.068 (3)0.045 (2)0.0088 (18)0.0030 (16)0.0187 (18)
C140.0477 (19)0.064 (2)0.047 (2)0.0008 (17)0.0233 (17)0.0024 (17)
C150.0246 (12)0.0206 (13)0.0367 (15)0.0009 (10)0.0061 (11)0.0094 (11)
C160.0363 (16)0.0362 (18)0.057 (2)0.0141 (13)0.0009 (15)0.0167 (15)
C170.0381 (16)0.0409 (18)0.0355 (16)0.0128 (13)0.0043 (13)0.0061 (14)
C180.0136 (10)0.0115 (10)0.0310 (13)0.0004 (8)0.0026 (9)0.0005 (9)
C190.0219 (11)0.0187 (12)0.0298 (14)0.0000 (9)0.0026 (10)0.0052 (10)
C200.0293 (13)0.0214 (13)0.0458 (18)0.0015 (11)0.0062 (13)0.0126 (12)
C210.0302 (14)0.0146 (13)0.071 (2)0.0030 (11)0.0135 (15)0.0070 (13)
C220.0282 (13)0.0176 (13)0.059 (2)0.0010 (10)0.0180 (13)0.0119 (13)
C230.0165 (11)0.0199 (12)0.0344 (14)0.0043 (9)0.0069 (10)0.0068 (10)
C240.0440 (16)0.0282 (15)0.0230 (13)0.0005 (12)0.0034 (12)0.0029 (11)
C250.059 (2)0.074 (3)0.0342 (18)0.009 (2)0.0053 (17)0.0033 (18)
C260.0471 (18)0.055 (2)0.0325 (16)0.0054 (16)0.0156 (15)0.0039 (15)
C270.0309 (14)0.0307 (15)0.0315 (15)0.0014 (11)0.0116 (12)0.0090 (12)
C280.057 (2)0.076 (3)0.0402 (19)0.017 (2)0.0103 (17)0.0219 (19)
C290.0393 (17)0.047 (2)0.054 (2)0.0057 (14)0.0258 (16)0.0071 (16)
C300.048 (2)0.069 (3)0.045 (2)0.008 (2)0.0088 (19)0.006 (2)
C310.048 (2)0.034 (2)0.036 (2)0.0034 (17)0.0031 (17)0.0031 (16)
Cl30.1267 (13)0.0573 (8)0.0562 (7)0.0177 (8)0.0283 (8)0.0119 (6)
Cl40.0621 (7)0.0740 (8)0.0735 (8)0.0170 (6)0.0320 (6)0.0125 (7)
C30A0.048 (2)0.069 (3)0.045 (2)0.008 (2)0.0088 (19)0.006 (2)
C31A0.048 (2)0.034 (2)0.036 (2)0.0034 (17)0.0031 (17)0.0031 (16)
Cl3A0.1267 (13)0.0573 (8)0.0562 (7)0.0177 (8)0.0283 (8)0.0119 (6)
Cl4A0.0621 (7)0.0740 (8)0.0735 (8)0.0170 (6)0.0320 (6)0.0125 (7)
Geometric parameters (Å, º) top
Pd1—N22.0200 (18)C17—H17A0.9800
Pd1—N12.0280 (19)C17—H17B0.9800
Pd1—Cl22.2840 (7)C17—H17C0.9800
Pd1—Cl12.2843 (6)C18—C191.402 (3)
N1—C11.297 (3)C18—C231.405 (3)
N1—C61.443 (3)C19—C201.394 (4)
N2—C21.293 (3)C19—C241.516 (4)
N2—C181.449 (3)C20—C211.373 (4)
C1—C21.492 (3)C20—H200.9500
C1—C31.493 (3)C21—C221.384 (4)
C2—C41.497 (3)C21—H210.9500
C3—H3A0.9800C22—C231.391 (4)
C3—H3B0.9800C22—H220.9500
C3—H3C0.9800C23—C271.519 (4)
C4—C51.532 (4)C24—C251.528 (4)
C4—H4A0.9900C24—C261.531 (4)
C4—H4B0.9900C24—H241.0000
C5—H5A0.9800C25—H25A0.9800
C5—H5B0.9800C25—H25B0.9800
C5—H5C0.9800C25—H25C0.9800
C6—C71.401 (3)C26—H26A0.9800
C6—C111.403 (3)C26—H26B0.9800
C7—C81.402 (4)C26—H26C0.9800
C7—C121.522 (4)C27—C291.529 (4)
C8—C91.373 (5)C27—C281.535 (4)
C8—H80.9500C27—H271.0000
C9—C101.383 (4)C28—H28A0.9800
C9—H90.9500C28—H28B0.9800
C10—C111.393 (4)C28—H28C0.9800
C10—H100.9500C29—H29A0.9800
C11—C151.521 (4)C29—H29B0.9800
C12—C131.521 (4)C29—H29C0.9800
C12—C141.531 (4)C30—C311.482 (6)
C12—H121.0000C30—Cl31.768 (5)
C13—H13A0.9800C30—H30A0.9900
C13—H13B0.9800C30—H30B0.9900
C13—H13C0.9800C31—Cl41.772 (4)
C14—H14A0.9800C31—H31A0.9900
C14—H14B0.9800C31—H31B0.9900
C14—H14C0.9800C30A—C31A1.460 (8)
C15—C161.528 (4)C30A—Cl3A1.761 (6)
C15—C171.530 (4)C30A—H30C0.9900
C15—H151.0000C30A—H30D0.9900
C16—H16A0.9800C31A—Cl4A1.762 (5)
C16—H16B0.9800C31A—H31C0.9900
C16—H16C0.9800C31A—H31D0.9900
N2—Pd1—N179.01 (8)C15—C17—H17A109.5
N2—Pd1—Cl296.29 (6)C15—C17—H17B109.5
N1—Pd1—Cl2174.30 (5)H17A—C17—H17B109.5
N2—Pd1—Cl1173.66 (6)C15—C17—H17C109.5
N1—Pd1—Cl195.21 (5)H17A—C17—H17C109.5
Cl2—Pd1—Cl189.62 (2)H17B—C17—H17C109.5
C1—N1—C6121.05 (19)C19—C18—C23122.9 (2)
C1—N1—Pd1115.15 (15)C19—C18—N2120.0 (2)
C6—N1—Pd1123.80 (14)C23—C18—N2116.9 (2)
C2—N2—C18122.18 (19)C20—C19—C18117.1 (2)
C2—N2—Pd1115.72 (15)C20—C19—C24120.1 (2)
C18—N2—Pd1121.80 (14)C18—C19—C24122.8 (2)
N1—C1—C2114.7 (2)C21—C20—C19121.5 (3)
N1—C1—C3124.3 (2)C21—C20—H20119.2
C2—C1—C3120.83 (19)C19—C20—H20119.2
N2—C2—C1114.69 (19)C20—C21—C22120.0 (3)
N2—C2—C4124.5 (2)C20—C21—H21120.0
C1—C2—C4120.7 (2)C22—C21—H21120.0
C1—C3—H3A109.5C21—C22—C23121.7 (3)
C1—C3—H3B109.5C21—C22—H22119.2
H3A—C3—H3B109.5C23—C22—H22119.2
C1—C3—H3C109.5C22—C23—C18116.8 (3)
H3A—C3—H3C109.5C22—C23—C27120.3 (2)
H3B—C3—H3C109.5C18—C23—C27122.9 (2)
C2—C4—C5112.9 (2)C19—C24—C25111.4 (3)
C2—C4—H4A109.0C19—C24—C26110.6 (2)
C5—C4—H4A109.0C25—C24—C26110.6 (3)
C2—C4—H4B109.0C19—C24—H24108.0
C5—C4—H4B109.0C25—C24—H24108.0
H4A—C4—H4B107.8C26—C24—H24108.0
C4—C5—H5A109.5C24—C25—H25A109.5
C4—C5—H5B109.5C24—C25—H25B109.5
H5A—C5—H5B109.5H25A—C25—H25B109.5
C4—C5—H5C109.5C24—C25—H25C109.5
H5A—C5—H5C109.5H25A—C25—H25C109.5
H5B—C5—H5C109.5H25B—C25—H25C109.5
C7—C6—C11123.3 (2)C24—C26—H26A109.5
C7—C6—N1116.2 (2)C24—C26—H26B109.5
C11—C6—N1120.5 (2)H26A—C26—H26B109.5
C6—C7—C8116.9 (3)C24—C26—H26C109.5
C6—C7—C12121.8 (2)H26A—C26—H26C109.5
C8—C7—C12121.3 (2)H26B—C26—H26C109.5
C9—C8—C7120.9 (3)C23—C27—C29111.0 (2)
C9—C8—H8119.5C23—C27—C28112.8 (3)
C7—C8—H8119.5C29—C27—C28109.8 (2)
C8—C9—C10120.7 (3)C23—C27—H27107.6
C8—C9—H9119.7C29—C27—H27107.6
C10—C9—H9119.7C28—C27—H27107.6
C9—C10—C11121.4 (3)C27—C28—H28A109.5
C9—C10—H10119.3C27—C28—H28B109.5
C11—C10—H10119.3H28A—C28—H28B109.5
C10—C11—C6116.7 (2)C27—C28—H28C109.5
C10—C11—C15121.7 (2)H28A—C28—H28C109.5
C6—C11—C15121.6 (2)H28B—C28—H28C109.5
C13—C12—C7111.5 (3)C27—C29—H29A109.5
C13—C12—C14111.0 (3)C27—C29—H29B109.5
C7—C12—C14112.5 (2)H29A—C29—H29B109.5
C13—C12—H12107.2C27—C29—H29C109.5
C7—C12—H12107.2H29A—C29—H29C109.5
C14—C12—H12107.2H29B—C29—H29C109.5
C12—C13—H13A109.5C31—C30—Cl3112.7 (3)
C12—C13—H13B109.5C31—C30—H30A109.1
H13A—C13—H13B109.5Cl3—C30—H30A109.1
C12—C13—H13C109.5C31—C30—H30B109.1
H13A—C13—H13C109.5Cl3—C30—H30B109.1
H13B—C13—H13C109.5H30A—C30—H30B107.8
C12—C14—H14A109.5C30—C31—Cl4112.7 (3)
C12—C14—H14B109.5C30—C31—H31A109.0
H14A—C14—H14B109.5Cl4—C31—H31A109.0
C12—C14—H14C109.5C30—C31—H31B109.0
H14A—C14—H14C109.5Cl4—C31—H31B109.0
H14B—C14—H14C109.5H31A—C31—H31B107.8
C11—C15—C16113.5 (2)C31A—C30A—Cl3A116.3 (16)
C11—C15—C17111.3 (2)C31A—C30A—H30C108.2
C16—C15—C17109.9 (2)Cl3A—C30A—H30C108.2
C11—C15—H15107.3C31A—C30A—H30D108.2
C16—C15—H15107.3Cl3A—C30A—H30D108.2
C17—C15—H15107.3H30C—C30A—H30D107.4
C15—C16—H16A109.5C30A—C31A—Cl4A111.0 (17)
C15—C16—H16B109.5C30A—C31A—H31C109.4
H16A—C16—H16B109.5Cl4A—C31A—H31C109.4
C15—C16—H16C109.5C30A—C31A—H31D109.4
H16A—C16—H16C109.5Cl4A—C31A—H31D109.4
H16B—C16—H16C109.5H31C—C31A—H31D108.0
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
C3—H3B···Cl1i0.982.673.604 (3)160
C4—H4A···Cl1i0.992.793.763 (3)166
C15—H15···Cl4i1.002.803.586 (3)136
C21—H21···Cl1ii0.952.743.633 (3)156
Symmetry codes: (i) x+1, y, z; (ii) x+1, y1/2, z+3/2.
 

Acknowledgements

This work is funded in part by the Welch Foundation (V-0004). We thank Tulane University for support of the Tulane Crystallography Laboratory.

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