metal-organic compounds
Dichlorido(4,7-diaza-1-azoniacyclononane-κ2N4,N7)palladium(II) p-toluenesulfonate
aDepartment of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA
*Correspondence e-mail: hadi.arman@utsa.edu, judith.walmsley@utsa.edu
The title compound, [PdCl2(C6H16N3)](C7H7SO3), consists of a PdII atom bonded to two N atoms of the 1,4,7-triazacyclononane (TACN) ligand and two chloride ions, which define a distorted square-planar geometry. The third N atom of the TACN ligand is protonated and hydrogen bonds to the p-toluenesulfonate anion. The Cl—Pd—Cl angle is larger than the N—Pd—N angle. The packing is dominated by layers, which are formed by the criss-crossing of two different hydrogen-bonded chains. One chain is composed of hydrogen-bonded Pd(TACNH)Cl2+ cations, while the second is formed through hydrogen bonding between the p-toluenesulfonate anion and the Pd(TACNH)Cl2+ cation.
Related literature
For background to complexes of PdII and PtII with 1,4,7-triazacyclononane (TACN), see: McAuley & Whitcombe (1988); Blake et al. (1988, 1993); Margulis & Zompa (1992); Hunter et al. (1988); Davies et al. (2000). For the synthesis of TACN, see: Kang & Jo (2003). For Pd—N and Pd—Cl bond distances in Pd(en)Cl2, see: Iball et al. (1975).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku/MSC, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536810016533/tk2666sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810016533/tk2666Isup2.hkl
The ligand (TACN) was prepared according to the procedure reported in the literature (Kang & Jo, 2003). K2PdCl4 (0.126 g, 0.387 mmol) was dissolved in deionized H2O (20 ml) and heated to 343 K. TACN (0.0500 g, 0.387 mmol) was dissolved in 50% 2-propanol/50% water solution (20 ml) and heated to 343 K. The two hot solutions were combined, removed from the heat and allowed to stir for 48 h. Yellow-brown crystals precipitated and were isolated by suction filtration. These were recrystallized from a 50% 2-propanol/50% water mixture to obtain crystals suitable for X-ray analysis.
Carbon-bound H-atoms were placed in calculated positions(C—H 0.93 - 0.97 Å) and were included in the
in the riding model approximation with Uiso(H) set to 1.2-1.5 Ueq(C). The nitrogen-bound H-atoms were located in a difference Fourier map and were refined with Uiso(H) = 1.2Ueq(N).Complexes of PdII and PtII with 1,4,7,-triazacyclononane (TACN) have been reported in which the metal ion is coordinated to all three of the TACN nitrogen atoms (McAuley & Whitcombe, 1988) or to only two of the N atoms (Blake et al., 1988; Blake et al., 1993; Margulis & Zompa, 1992; Hunter et al., 1988). In the latter case, under acidic conditions, the non-Pd bonded N atom becomes protonated. As a result, hydrogen bonding networks can be formed in the presence of an acceptor site. A similar type of complex has been reported for PtII (Davies et al., 2000).
The title salt is comprised of a protonated Pd(TACNH)Cl2+ cation and a p-toluenesulfonate ion, Fig. 1. The Pd—N and Pd—Cl bond distances, Table 1, are similar to the bond distances observed in Pd(en)Cl2 of 1.9798 (7) and 2.3084 (8) Å for Pd—N and Pd—Cl bonds, respectively (Iball et al., 1975). The geometry about the PdIIatom is essentially square planar, but with the Cl1—Pd—Cl2 bond angle larger than the N1—Pd—N2 bond angle., Table 1 The dimer associates into a supramolecular chain via a nine member, ···O1—S1—O2···H3a—N3—C—C—N1—H1a···, synthon, Fig 2. A second hydrogen bonded chain is observed that is formed between protonated Pd(TACNH)Cl2+ cations. These chains are composed of a seven member, ···Cl2—Pd—N1—C—C—N3—H3d···, repeat unit involving the protonated N atom, Fig 3. Hydrogen bonding distances are given in Table 1. These two hydrogen bonded chains are situated approximately perpendicular to one another which allows for the formation of 2-D hydrogen bonded layers, Fig 4.
For background to complexes of PdII and PtII with 1,4,7,-triazacyclononane (TACN), see: McAuley & Whitcombe (1988); Blake et al. (1988, 1993); Margulis & Zompa (1992); Hunter et al. (1988); Davies et al. (2000). For the synthesis of TACN, see: Kang & Jo (2003). For Pd—N and Pd—Cl bond distances in Pd(en)Cl2, see: Iball et al. (1975).
Data collection: CrystalClear (Rigaku/MSC, 2005); cell
CrystalClear (Rigaku/MSC, 2005); data reduction: CrystalClear (Rigaku/MSC, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: publCIF (Westrip, 2010).[PdCl2(C6H16N3)](C7H7O3S) | Z = 2 |
Mr = 478.70 | F(000) = 484 |
Triclinic, P1 | Dx = 1.783 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.6663 (11) Å | Cell parameters from 4441 reflections |
b = 7.0023 (11) Å | θ = 3.0–40.2° |
c = 19.646 (3) Å | µ = 1.47 mm−1 |
α = 92.149 (3)° | T = 98 K |
β = 92.301 (3)° | Prism, orange |
γ = 103.084 (4)° | 0.39 × 0.25 × 0.14 mm |
V = 891.5 (2) Å3 |
Rigaku AFC12 Kappa goniometer diffractometer | 3998 independent reflections |
Radiation source: sealed tube | 3941 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.018 |
Detector resolution: 14.286 pixels mm-1 | θmax = 27.5°, θmin = 3.0° |
ω scans | h = −8→8 |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | k = −9→8 |
Tmin = 0.839, Tmax = 1.000 | l = −25→24 |
6224 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.029 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.067 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.007P)2 + 4.1P] where P = (Fo2 + 2Fc2)/3 |
3998 reflections | (Δ/σ)max = 0.001 |
220 parameters | Δρmax = 0.62 e Å−3 |
0 restraints | Δρmin = −0.98 e Å−3 |
[PdCl2(C6H16N3)](C7H7O3S) | γ = 103.084 (4)° |
Mr = 478.70 | V = 891.5 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.6663 (11) Å | Mo Kα radiation |
b = 7.0023 (11) Å | µ = 1.47 mm−1 |
c = 19.646 (3) Å | T = 98 K |
α = 92.149 (3)° | 0.39 × 0.25 × 0.14 mm |
β = 92.301 (3)° |
Rigaku AFC12 Kappa goniometer diffractometer | 3998 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 3941 reflections with I > 2σ(I) |
Tmin = 0.839, Tmax = 1.000 | Rint = 0.018 |
6224 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | 0 restraints |
wR(F2) = 0.067 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.62 e Å−3 |
3998 reflections | Δρmin = −0.98 e Å−3 |
220 parameters |
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 > σ(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. |
x | y | z | Uiso*/Ueq | ||
Pd1 | 0.97009 (3) | 1.13904 (3) | 0.126918 (10) | 0.00972 (6) | |
Cl2 | 0.84514 (10) | 1.25666 (9) | 0.02940 (3) | 0.01338 (13) | |
Cl1 | 1.31092 (10) | 1.25684 (10) | 0.10367 (3) | 0.01477 (13) | |
N1 | 1.0477 (4) | 1.0307 (3) | 0.21612 (12) | 0.0107 (4) | |
N2 | 0.6749 (3) | 1.0232 (3) | 0.15540 (12) | 0.0119 (4) | |
N3 | 0.8065 (4) | 0.6217 (4) | 0.12108 (13) | 0.0131 (5) | |
C5 | 1.0277 (4) | 0.7097 (4) | 0.14512 (15) | 0.0135 (5) | |
H5A | 1.0902 | 0.7978 | 0.1110 | 0.016* | |
H5B | 1.1000 | 0.6042 | 0.1465 | 0.016* | |
C4 | 0.6940 (4) | 0.7353 (4) | 0.07501 (14) | 0.0133 (5) | |
H4A | 0.6068 | 0.6428 | 0.0422 | 0.016* | |
H4B | 0.7954 | 0.8225 | 0.0497 | 0.016* | |
C6 | 1.0657 (4) | 0.8215 (4) | 0.21375 (14) | 0.0125 (5) | |
H6A | 0.9693 | 0.7511 | 0.2449 | 0.015* | |
H6B | 1.2032 | 0.8187 | 0.2311 | 0.015* | |
C3 | 0.5617 (4) | 0.8563 (4) | 0.10909 (15) | 0.0139 (5) | |
H3B | 0.4858 | 0.9082 | 0.0739 | 0.017* | |
H3C | 0.4616 | 0.7700 | 0.1352 | 0.017* | |
C2 | 0.6799 (4) | 0.9703 (4) | 0.22882 (14) | 0.0150 (5) | |
H2B | 0.6567 | 0.8290 | 0.2315 | 0.018* | |
H2C | 0.5715 | 1.0137 | 0.2522 | 0.018* | |
C1 | 0.8864 (4) | 1.0674 (4) | 0.26239 (14) | 0.0143 (5) | |
H1B | 0.8975 | 1.2073 | 0.2694 | 0.017* | |
H1C | 0.9036 | 1.0128 | 0.3063 | 0.017* | |
S1 | 0.48600 (10) | 0.43932 (10) | 0.28213 (3) | 0.01295 (14) | |
O1 | 0.3964 (3) | 0.2362 (3) | 0.29720 (10) | 0.0153 (4) | |
O2 | 0.6622 (3) | 0.4531 (3) | 0.23865 (10) | 0.0162 (4) | |
O3 | 0.3348 (4) | 0.5425 (3) | 0.25768 (12) | 0.0240 (5) | |
C7 | 0.5938 (5) | 0.5596 (4) | 0.36084 (15) | 0.0168 (6) | |
C8 | 0.7933 (5) | 0.5552 (5) | 0.38198 (17) | 0.0244 (7) | |
H8A | 0.8725 | 0.4937 | 0.3545 | 0.029* | |
C9 | 0.8743 (6) | 0.6442 (5) | 0.44501 (18) | 0.0316 (8) | |
H9A | 1.0087 | 0.6422 | 0.4590 | 0.038* | |
C12 | 0.4771 (6) | 0.6539 (5) | 0.40103 (18) | 0.0286 (7) | |
H12A | 0.3447 | 0.6602 | 0.3861 | 0.034* | |
C11 | 0.5605 (6) | 0.7399 (6) | 0.4645 (2) | 0.0373 (9) | |
H11A | 0.4811 | 0.8014 | 0.4919 | 0.045* | |
C10 | 0.7584 (6) | 0.7355 (5) | 0.48716 (17) | 0.0329 (9) | |
C13 | 0.8478 (8) | 0.8282 (7) | 0.55589 (19) | 0.0492 (13) | |
H13A | 0.7474 | 0.8842 | 0.5781 | 0.074* | |
H13B | 0.9686 | 0.9293 | 0.5496 | 0.074* | |
H13C | 0.8842 | 0.7299 | 0.5836 | 0.074* | |
H1A | 1.158 (8) | 1.102 (8) | 0.230 (3) | 0.059* | |
H2A | 0.624 (8) | 1.114 (8) | 0.151 (3) | 0.059* | |
H3A | 0.742 (8) | 0.592 (8) | 0.151 (3) | 0.059* | |
H3D | 0.809 (8) | 0.516 (8) | 0.100 (3) | 0.059* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Pd1 | 0.00972 (10) | 0.00856 (10) | 0.01090 (11) | 0.00177 (7) | 0.00143 (7) | 0.00151 (7) |
Cl2 | 0.0159 (3) | 0.0127 (3) | 0.0122 (3) | 0.0043 (2) | 0.0012 (2) | 0.0019 (2) |
Cl1 | 0.0111 (3) | 0.0167 (3) | 0.0161 (3) | 0.0015 (2) | 0.0024 (2) | 0.0038 (2) |
N1 | 0.0111 (11) | 0.0110 (11) | 0.0091 (11) | 0.0001 (8) | 0.0017 (8) | 0.0009 (8) |
N2 | 0.0092 (10) | 0.0109 (11) | 0.0162 (12) | 0.0035 (8) | 0.0025 (8) | 0.0011 (9) |
N3 | 0.0149 (11) | 0.0112 (11) | 0.0130 (12) | 0.0024 (9) | 0.0021 (9) | 0.0012 (9) |
C5 | 0.0099 (12) | 0.0132 (13) | 0.0180 (14) | 0.0033 (10) | 0.0018 (10) | 0.0020 (10) |
C4 | 0.0147 (13) | 0.0126 (12) | 0.0118 (13) | 0.0019 (10) | −0.0008 (10) | 0.0000 (10) |
C6 | 0.0120 (12) | 0.0114 (12) | 0.0145 (13) | 0.0032 (10) | 0.0009 (10) | 0.0030 (10) |
C3 | 0.0103 (12) | 0.0135 (13) | 0.0171 (14) | 0.0009 (10) | 0.0007 (10) | 0.0006 (10) |
C2 | 0.0159 (13) | 0.0154 (13) | 0.0140 (13) | 0.0032 (11) | 0.0049 (10) | 0.0028 (10) |
C1 | 0.0167 (13) | 0.0149 (13) | 0.0117 (13) | 0.0043 (11) | 0.0049 (10) | −0.0007 (10) |
S1 | 0.0134 (3) | 0.0117 (3) | 0.0133 (3) | 0.0020 (2) | 0.0007 (2) | 0.0011 (2) |
O1 | 0.0175 (10) | 0.0135 (9) | 0.0128 (10) | −0.0013 (8) | 0.0019 (8) | 0.0007 (7) |
O2 | 0.0141 (10) | 0.0204 (10) | 0.0132 (10) | 0.0018 (8) | 0.0024 (7) | 0.0027 (8) |
O3 | 0.0238 (11) | 0.0224 (11) | 0.0288 (12) | 0.0118 (9) | −0.0025 (9) | 0.0027 (9) |
C7 | 0.0227 (15) | 0.0121 (13) | 0.0132 (13) | −0.0012 (11) | 0.0032 (11) | 0.0002 (10) |
C8 | 0.0283 (17) | 0.0235 (16) | 0.0201 (16) | 0.0042 (13) | −0.0022 (13) | −0.0014 (12) |
C9 | 0.0343 (19) | 0.0331 (19) | 0.0211 (17) | −0.0046 (15) | −0.0055 (14) | 0.0012 (14) |
C12 | 0.0277 (17) | 0.0256 (17) | 0.0291 (18) | −0.0008 (14) | 0.0098 (14) | −0.0090 (14) |
C11 | 0.046 (2) | 0.0320 (19) | 0.0274 (19) | −0.0054 (17) | 0.0191 (17) | −0.0105 (15) |
C10 | 0.047 (2) | 0.0265 (17) | 0.0144 (16) | −0.0148 (15) | 0.0065 (14) | −0.0030 (13) |
C13 | 0.068 (3) | 0.044 (2) | 0.0176 (18) | −0.024 (2) | 0.0062 (18) | −0.0074 (16) |
Pd1—N1 | 2.030 (2) | C2—C1 | 1.504 (4) |
Pd1—N2 | 2.060 (2) | C2—H2B | 0.9700 |
Pd1—Cl1 | 2.3053 (8) | C2—H2C | 0.9700 |
Pd1—Cl2 | 2.3115 (7) | C1—H1B | 0.9700 |
N1—C1 | 1.495 (3) | C1—H1C | 0.9700 |
N1—C6 | 1.495 (3) | S1—O3 | 1.444 (2) |
N1—H1A | 0.82 (5) | S1—O1 | 1.459 (2) |
N2—C3 | 1.493 (3) | S1—O2 | 1.468 (2) |
N2—C2 | 1.504 (4) | S1—C7 | 1.777 (3) |
N2—H2A | 0.79 (5) | C7—C12 | 1.381 (4) |
N3—C4 | 1.511 (4) | C7—C8 | 1.385 (5) |
N3—C5 | 1.512 (4) | C8—C9 | 1.396 (5) |
N3—H3A | 0.76 (6) | C8—H8A | 0.9300 |
N3—H3D | 0.83 (6) | C9—C10 | 1.388 (6) |
C5—C6 | 1.516 (4) | C9—H9A | 0.9300 |
C5—H5A | 0.9700 | C12—C11 | 1.400 (5) |
C5—H5B | 0.9700 | C12—H12A | 0.9300 |
C4—C3 | 1.512 (4) | C11—C10 | 1.383 (6) |
C4—H4A | 0.9700 | C11—H11A | 0.9300 |
C4—H4B | 0.9700 | C10—C13 | 1.515 (5) |
C6—H6A | 0.9700 | C13—H13A | 0.9600 |
C6—H6B | 0.9700 | C13—H13B | 0.9600 |
C3—H3B | 0.9700 | C13—H13C | 0.9600 |
C3—H3C | 0.9700 | ||
N1—Pd1—N2 | 82.71 (9) | N2—C3—H3C | 108.4 |
N1—Pd1—Cl1 | 92.14 (7) | C4—C3—H3C | 108.4 |
N2—Pd1—Cl1 | 174.84 (7) | H3B—C3—H3C | 107.4 |
N1—Pd1—Cl2 | 173.69 (7) | N2—C2—C1 | 109.3 (2) |
N2—Pd1—Cl2 | 91.14 (7) | N2—C2—H2B | 109.8 |
Cl1—Pd1—Cl2 | 94.02 (3) | C1—C2—H2B | 109.8 |
C1—N1—C6 | 112.8 (2) | N2—C2—H2C | 109.8 |
C1—N1—Pd1 | 103.19 (17) | C1—C2—H2C | 109.8 |
C6—N1—Pd1 | 116.87 (17) | H2B—C2—H2C | 108.3 |
C1—N1—H1A | 108 (4) | N1—C1—C2 | 107.4 (2) |
C6—N1—H1A | 109 (4) | N1—C1—H1B | 110.2 |
Pd1—N1—H1A | 106 (4) | C2—C1—H1B | 110.2 |
C3—N2—C2 | 112.6 (2) | N1—C1—H1C | 110.2 |
C3—N2—Pd1 | 113.10 (17) | C2—C1—H1C | 110.2 |
C2—N2—Pd1 | 109.76 (17) | H1B—C1—H1C | 108.5 |
C3—N2—H2A | 109 (4) | O3—S1—O1 | 113.12 (13) |
C2—N2—H2A | 110 (4) | O3—S1—O2 | 113.98 (13) |
Pd1—N2—H2A | 101 (4) | O1—S1—O2 | 111.41 (12) |
C4—N3—C5 | 119.6 (2) | O3—S1—C7 | 106.63 (14) |
C4—N3—H3A | 108 (4) | O1—S1—C7 | 106.18 (13) |
C5—N3—H3A | 110 (4) | O2—S1—C7 | 104.72 (13) |
C4—N3—H3D | 107 (4) | C12—C7—C8 | 120.5 (3) |
C5—N3—H3D | 105 (4) | C12—C7—S1 | 119.9 (3) |
H3A—N3—H3D | 105 (5) | C8—C7—S1 | 119.7 (2) |
N3—C5—C6 | 117.7 (2) | C7—C8—C9 | 119.3 (3) |
N3—C5—H5A | 107.9 | C7—C8—H8A | 120.3 |
C6—C5—H5A | 107.9 | C9—C8—H8A | 120.3 |
N3—C5—H5B | 107.9 | C10—C9—C8 | 121.4 (4) |
C6—C5—H5B | 107.9 | C10—C9—H9A | 119.3 |
H5A—C5—H5B | 107.2 | C8—C9—H9A | 119.3 |
N3—C4—C3 | 116.7 (2) | C7—C12—C11 | 119.3 (4) |
N3—C4—H4A | 108.1 | C7—C12—H12A | 120.4 |
C3—C4—H4A | 108.1 | C11—C12—H12A | 120.4 |
N3—C4—H4B | 108.1 | C10—C11—C12 | 121.4 (3) |
C3—C4—H4B | 108.1 | C10—C11—H11A | 119.3 |
H4A—C4—H4B | 107.3 | C12—C11—H11A | 119.3 |
N1—C6—C5 | 117.5 (2) | C11—C10—C9 | 118.1 (3) |
N1—C6—H6A | 107.9 | C11—C10—C13 | 121.3 (4) |
C5—C6—H6A | 107.9 | C9—C10—C13 | 120.6 (4) |
N1—C6—H6B | 107.9 | C10—C13—H13A | 109.5 |
C5—C6—H6B | 107.9 | C10—C13—H13B | 109.5 |
H6A—C6—H6B | 107.2 | H13A—C13—H13B | 109.5 |
N2—C3—C4 | 115.6 (2) | C10—C13—H13C | 109.5 |
N2—C3—H3B | 108.4 | H13A—C13—H13C | 109.5 |
C4—C3—H3B | 108.4 | H13B—C13—H13C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1a···O1i | 0.82 (6) | 2.05 (6) | 2.833 (3) | 159 (6) |
N2—H2a···Cl1ii | 0.79 (5) | 2.66 (6) | 3.365 (2) | 149 (5) |
N3—H3a···O2 | 0.75 (6) | 2.04 (6) | 2.743 (3) | 156 (6) |
N3—H3d···Cl2iii | 0.84 (5) | 2.31 (6) | 3.136 (3) | 171 (5) |
Symmetry codes: (i) x+1, y+1, z; (ii) x−1, y, z; (iii) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | [PdCl2(C6H16N3)](C7H7O3S) |
Mr | 478.70 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 98 |
a, b, c (Å) | 6.6663 (11), 7.0023 (11), 19.646 (3) |
α, β, γ (°) | 92.149 (3), 92.301 (3), 103.084 (4) |
V (Å3) | 891.5 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.47 |
Crystal size (mm) | 0.39 × 0.25 × 0.14 |
Data collection | |
Diffractometer | Rigaku AFC12 Kappa goniometer |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.839, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6224, 3998, 3941 |
Rint | 0.018 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.067, 1.00 |
No. of reflections | 3998 |
No. of parameters | 220 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.62, −0.98 |
Computer programs: CrystalClear (Rigaku/MSC, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEPII (Johnson, 1976), publCIF (Westrip, 2010).
Pd1—N1 | 2.030 (2) | Pd1—Cl1 | 2.3053 (8) |
Pd1—N2 | 2.060 (2) | Pd1—Cl2 | 2.3115 (7) |
N1—Pd1—N2 | 82.71 (9) | Cl1—Pd1—Cl2 | 94.02 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1a···O1i | 0.82 (6) | 2.05 (6) | 2.833 (3) | 159 (6) |
N2—H2a···Cl1ii | 0.79 (5) | 2.66 (6) | 3.365 (2) | 149 (5) |
N3—H3a···O2 | 0.75 (6) | 2.04 (6) | 2.743 (3) | 156 (6) |
N3—H3d···Cl2iii | 0.84 (5) | 2.31 (6) | 3.136 (3) | 171 (5) |
Symmetry codes: (i) x+1, y+1, z; (ii) x−1, y, z; (iii) x, y−1, z. |
D···O | X—D···A | S=O···D |
C1,C6—N1···O1i | 2.833 (3) | 97.42 (16), 104.83 (15) |
N1—H1a···O1i | 2.05 (5) | 159 (5) |
C4,C5—N3···O2 | 2.743 (3) | 125.55 (18), 99.40 (17) |
N3—H3a···O2 | 2.04 (6) | 156 (6) |
N3—H3d···Cl2ii | 2.31 (6) | 171 (5) |
C4,C5—N3···Cl2ii | 3.136 (3) | 104.10 (16), 102.66 (16) |
Pd—Cl2—H3diii | 85 (1) | |
Pd—Cl2—N3iii | 86.58 (5) | |
S1—O1···N1iv | 118.00 (12) | |
S1—O1···H1aiv | 113.3 (15) | |
S1—O2···N3 | 139.70 (12) | |
S1—O2···H3a | 133.4 (16) |
Symmetry codes: (i) 1+x, 1+y, z; (ii) x, -1+y, z; (iii) x, 1+y, z; (iv) -1+x, -1+y, z. |
Acknowledgements
Support from the Department of Chemistry at The University of Texas is gratefully acknowledged.
References
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Complexes of PdII and PtII with 1,4,7,-triazacyclononane (TACN) have been reported in which the metal ion is coordinated to all three of the TACN nitrogen atoms (McAuley & Whitcombe, 1988) or to only two of the N atoms (Blake et al., 1988; Blake et al., 1993; Margulis & Zompa, 1992; Hunter et al., 1988). In the latter case, under acidic conditions, the non-Pd bonded N atom becomes protonated. As a result, hydrogen bonding networks can be formed in the presence of an acceptor site. A similar type of complex has been reported for PtII (Davies et al., 2000).
The title salt is comprised of a protonated Pd(TACNH)Cl2+ cation and a p-toluenesulfonate ion, Fig. 1. The Pd—N and Pd—Cl bond distances, Table 1, are similar to the bond distances observed in Pd(en)Cl2 of 1.9798 (7) and 2.3084 (8) Å for Pd—N and Pd—Cl bonds, respectively (Iball et al., 1975). The geometry about the PdIIatom is essentially square planar, but with the Cl1—Pd—Cl2 bond angle larger than the N1—Pd—N2 bond angle., Table 1 The dimer associates into a supramolecular chain via a nine member, ···O1—S1—O2···H3a—N3—C—C—N1—H1a···, synthon, Fig 2. A second hydrogen bonded chain is observed that is formed between protonated Pd(TACNH)Cl2+ cations. These chains are composed of a seven member, ···Cl2—Pd—N1—C—C—N3—H3d···, repeat unit involving the protonated N atom, Fig 3. Hydrogen bonding distances are given in Table 1. These two hydrogen bonded chains are situated approximately perpendicular to one another which allows for the formation of 2-D hydrogen bonded layers, Fig 4.