Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S160053680705074X/pv2032sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S160053680705074X/pv2032Isup2.hkl |
CCDC reference: 672622
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.005 Å
- R factor = 0.034
- wR factor = 0.080
- Data-to-parameter ratio = 21.9
checkCIF/PLATON results
No syntax errors found
Alert level C PLAT041_ALERT_1_C Calc. and Rep. SumFormula Strings Differ .... ? PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ .... ? PLAT045_ALERT_1_C Calculated and Reported Z Differ by ............ 2.00 Ratio PLAT412_ALERT_2_C Short Intra XH3 .. XHn H10A .. H14A .. 1.83 Ang. PLAT412_ALERT_2_C Short Intra XH3 .. XHn H12A .. H15A .. 1.82 Ang.
Alert level G PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature . 293 K PLAT794_ALERT_5_G Check Predicted Bond Valency for Cu1 (1) 0.91
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 5 ALERT level C = Check and explain 3 ALERT level G = General alerts; check 5 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 2 ALERT type 2 Indicator that the structure model may be wrong or deficient 0 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check
For related literature, see: Asplund et al. (1982); Cariati et al. (2001); Guloy et al. (2001); Mehrotra & Hoffmann (1978).
All chemicals and reagents were analytical grade available commercially and were used without further purfication. The title compound was prepared by self-assembling reaction of CuI with 4-(4-(dimethylmino)stryl)-1-ethyl- pridinium iodide. 4-(4-(Dimethylmino)stryl)-1-ethylpridinium iodide (0.19 g, 0.5 mmol) and CuI (0.095 g, 0.5 mmol) were dissolved in 8 ml dimethylformamide (DMF). The mixed solution was stirred still clear, with the pH value being adjusted to 6 by the addition of 10% HI/DMF solution and then filtered. The resulting solution was kept at room temperature for five days to obtain brown block crystals.
Data collection: TEXRAY (Molecular Structure Corporation, 1999); cell refinement: TEXRAY (Molecular Structure Corporation, 1999); data reduction: TEXSAN (Molecular Structure Corporation, 1999); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEX (McArdle, 1995); software used to prepare material for publication: SHELXL97.
(C17H21N2)2[Cu2I4] | F(000) = 1088.0 |
Mr = 1141.42 | Dx = 1.992 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 14979 reflections |
a = 10.707 (4) Å | θ = 3.2–27.5° |
b = 7.367 (4) Å | µ = 4.39 mm−1 |
c = 24.127 (9) Å | T = 293 K |
β = 90.908 (14)° | Block, brown |
V = 1902.9 (14) Å3 | 0.10 × 0.10 × 0.10 mm |
Z = 2 |
Rigaku R-AXIS RAPID Imaging Plate diffractometer | 4356 independent reflections |
Radiation source: fine-focus sealed tube | 3506 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.079 |
ω scans | θmax = 27.5°, θmin = 3.2° |
Absorption correction: multi-scan (Higash, 1995) | h = −13→13 |
Tmin = 0.645, Tmax = 0.651 | k = −9→9 |
18111 measured reflections | l = −31→31 |
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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.081 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + 0.277P] where P = (Fo2 + 2Fc2)/3 |
4356 reflections | (Δ/σ)max = 0.002 |
199 parameters | Δρmax = 0.57 e Å−3 |
0 restraints | Δρmin = −0.68 e Å−3 |
(C17H21N2)2[Cu2I4] | V = 1902.9 (14) Å3 |
Mr = 1141.42 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.707 (4) Å | µ = 4.39 mm−1 |
b = 7.367 (4) Å | T = 293 K |
c = 24.127 (9) Å | 0.10 × 0.10 × 0.10 mm |
β = 90.908 (14)° |
Rigaku R-AXIS RAPID Imaging Plate diffractometer | 4356 independent reflections |
Absorption correction: multi-scan (Higash, 1995) | 3506 reflections with I > 2σ(I) |
Tmin = 0.645, Tmax = 0.651 | Rint = 0.079 |
18111 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.081 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.57 e Å−3 |
4356 reflections | Δρmin = −0.68 e Å−3 |
199 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s 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 | ||
Cu1 | −0.02181 (5) | 0.88384 (8) | 0.54486 (2) | 0.06562 (15) | |
N1 | 0.2231 (2) | 0.2381 (5) | 0.60271 (12) | 0.0512 (7) | |
N2 | 0.7093 (3) | 0.3834 (5) | 0.22097 (13) | 0.0654 (9) | |
I1 | 0.16416 (2) | 0.84431 (4) | 0.479695 (11) | 0.06287 (10) | |
I2 | −0.05789 (2) | 0.69481 (4) | 0.629255 (10) | 0.06314 (10) | |
C1 | 0.3368 (3) | 0.1598 (6) | 0.60262 (15) | 0.0605 (10) | |
H1A | 0.3621 | 0.0889 | 0.6326 | 0.073* | |
C2 | 0.4154 (3) | 0.1826 (6) | 0.55930 (15) | 0.0594 (10) | |
H2A | 0.4945 | 0.1308 | 0.5608 | 0.071* | |
C3 | 0.3792 (3) | 0.2816 (5) | 0.51307 (13) | 0.0465 (7) | |
C4 | 0.2609 (3) | 0.3617 (5) | 0.51481 (14) | 0.0497 (8) | |
H4A | 0.2329 | 0.4322 | 0.4851 | 0.060* | |
C5 | 0.1864 (3) | 0.3379 (5) | 0.55932 (14) | 0.0536 (9) | |
H5A | 0.1081 | 0.3924 | 0.5595 | 0.064* | |
C6 | 0.4607 (3) | 0.2970 (5) | 0.46644 (14) | 0.0505 (8) | |
H6A | 0.5424 | 0.2567 | 0.4714 | 0.061* | |
C7 | 0.4299 (3) | 0.3635 (5) | 0.41694 (14) | 0.0517 (8) | |
H7A | 0.3492 | 0.4092 | 0.4133 | 0.062* | |
C8 | 0.5049 (3) | 0.3738 (5) | 0.36851 (14) | 0.0478 (8) | |
C9 | 0.6319 (3) | 0.3220 (5) | 0.36681 (14) | 0.0501 (8) | |
H9A | 0.6717 | 0.2850 | 0.3994 | 0.060* | |
C10 | 0.6976 (3) | 0.3246 (5) | 0.31940 (14) | 0.0534 (9) | |
H10A | 0.7807 | 0.2876 | 0.3204 | 0.064* | |
C11 | 0.6443 (3) | 0.3813 (5) | 0.26860 (14) | 0.0493 (8) | |
C12 | 0.5181 (3) | 0.4374 (6) | 0.27021 (14) | 0.0591 (10) | |
H12A | 0.4786 | 0.4786 | 0.2380 | 0.071* | |
C13 | 0.4540 (3) | 0.4320 (6) | 0.31796 (15) | 0.0605 (10) | |
H13A | 0.3711 | 0.4694 | 0.3171 | 0.073* | |
C14 | 0.8395 (4) | 0.3222 (7) | 0.21911 (19) | 0.0844 (15) | |
H14A | 0.8681 | 0.2915 | 0.2558 | 0.127* | |
H14B | 0.8906 | 0.4177 | 0.2046 | 0.127* | |
H14C | 0.8451 | 0.2174 | 0.1956 | 0.127* | |
C15 | 0.6530 (4) | 0.4375 (8) | 0.16883 (16) | 0.0840 (15) | |
H15A | 0.5687 | 0.4767 | 0.1748 | 0.126* | |
H15B | 0.6526 | 0.3364 | 0.1437 | 0.126* | |
H15C | 0.7001 | 0.5354 | 0.1533 | 0.126* | |
C16 | 0.1340 (4) | 0.2066 (7) | 0.64840 (17) | 0.0749 (13) | |
H16A | 0.0757 | 0.3074 | 0.6492 | 0.090* | |
H16B | 0.0863 | 0.0978 | 0.6400 | 0.090* | |
C17 | 0.1902 (4) | 0.1865 (8) | 0.70363 (17) | 0.0846 (15) | |
H17A | 0.1257 | 0.1675 | 0.7302 | 0.127* | |
H17B | 0.2360 | 0.2946 | 0.7130 | 0.127* | |
H17C | 0.2459 | 0.0844 | 0.7039 | 0.127* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cu1 | 0.0730 (3) | 0.0628 (4) | 0.0608 (3) | 0.0051 (3) | −0.0046 (2) | 0.0030 (2) |
N1 | 0.0456 (14) | 0.057 (2) | 0.0505 (15) | −0.0001 (14) | 0.0014 (13) | 0.0024 (14) |
N2 | 0.0533 (16) | 0.095 (3) | 0.0483 (16) | −0.0006 (17) | 0.0045 (15) | 0.0059 (16) |
I1 | 0.06111 (15) | 0.05589 (18) | 0.07167 (17) | 0.01157 (12) | 0.00291 (13) | 0.00773 (12) |
I2 | 0.05782 (15) | 0.0763 (2) | 0.05521 (15) | 0.01122 (12) | −0.00368 (12) | 0.00891 (12) |
C1 | 0.0540 (19) | 0.073 (3) | 0.054 (2) | 0.0093 (19) | −0.0013 (17) | 0.0118 (18) |
C2 | 0.0445 (17) | 0.079 (3) | 0.055 (2) | 0.0116 (18) | −0.0008 (16) | 0.0060 (19) |
C3 | 0.0469 (16) | 0.046 (2) | 0.0466 (17) | −0.0033 (15) | −0.0019 (15) | −0.0040 (15) |
C4 | 0.0581 (19) | 0.047 (2) | 0.0437 (16) | 0.0083 (16) | −0.0016 (15) | −0.0035 (14) |
C5 | 0.0477 (17) | 0.060 (3) | 0.0528 (19) | 0.0081 (16) | −0.0018 (16) | −0.0072 (17) |
C6 | 0.0432 (15) | 0.058 (2) | 0.0501 (18) | 0.0031 (16) | −0.0001 (15) | −0.0037 (16) |
C7 | 0.0489 (17) | 0.054 (2) | 0.0524 (18) | −0.0021 (16) | −0.0045 (16) | −0.0025 (16) |
C8 | 0.0448 (16) | 0.051 (2) | 0.0471 (17) | −0.0007 (15) | 0.0027 (15) | −0.0022 (15) |
C9 | 0.0481 (16) | 0.057 (2) | 0.0456 (17) | −0.0023 (16) | −0.0063 (15) | 0.0036 (15) |
C10 | 0.0418 (15) | 0.062 (3) | 0.056 (2) | −0.0006 (16) | −0.0014 (16) | −0.0009 (17) |
C11 | 0.0454 (16) | 0.053 (2) | 0.0499 (18) | −0.0024 (15) | 0.0001 (15) | 0.0000 (15) |
C12 | 0.0528 (19) | 0.078 (3) | 0.0458 (17) | 0.0059 (19) | −0.0044 (16) | 0.0065 (17) |
C13 | 0.0400 (16) | 0.082 (3) | 0.060 (2) | 0.0109 (18) | −0.0017 (16) | 0.005 (2) |
C14 | 0.061 (2) | 0.121 (5) | 0.072 (3) | 0.014 (3) | 0.021 (2) | 0.011 (3) |
C15 | 0.078 (3) | 0.121 (5) | 0.053 (2) | 0.003 (3) | 0.007 (2) | 0.016 (2) |
C16 | 0.056 (2) | 0.097 (4) | 0.072 (3) | −0.007 (2) | 0.017 (2) | 0.012 (2) |
C17 | 0.085 (3) | 0.115 (5) | 0.054 (2) | −0.020 (3) | 0.015 (2) | −0.006 (2) |
Cu1—I2 | 2.5019 (9) | C7—H7A | 0.9300 |
Cu1—I1 | 2.5731 (9) | C8—C13 | 1.395 (5) |
Cu1—I1i | 2.5800 (10) | C8—C9 | 1.414 (5) |
Cu1—Cu1i | 2.8046 (13) | C9—C10 | 1.352 (4) |
N1—C5 | 1.333 (5) | C9—H9A | 0.9300 |
N1—C1 | 1.347 (4) | C10—C11 | 1.407 (5) |
N1—C16 | 1.488 (4) | C10—H10A | 0.9300 |
N2—C11 | 1.353 (4) | C11—C12 | 1.414 (5) |
N2—C15 | 1.443 (5) | C12—C13 | 1.351 (5) |
N2—C14 | 1.466 (5) | C12—H12A | 0.9300 |
I1—Cu1i | 2.5800 (10) | C13—H13A | 0.9300 |
C1—C2 | 1.362 (5) | C14—H14A | 0.9600 |
C1—H1A | 0.9300 | C14—H14B | 0.9600 |
C2—C3 | 1.383 (5) | C14—H14C | 0.9600 |
C2—H2A | 0.9300 | C15—H15A | 0.9600 |
C3—C4 | 1.398 (5) | C15—H15B | 0.9600 |
C3—C6 | 1.439 (4) | C15—H15C | 0.9600 |
C4—C5 | 1.359 (5) | C16—C17 | 1.461 (6) |
C4—H4A | 0.9300 | C16—H16A | 0.9700 |
C5—H5A | 0.9300 | C16—H16B | 0.9700 |
C6—C7 | 1.328 (5) | C17—H17A | 0.9600 |
C6—H6A | 0.9300 | C17—H17B | 0.9600 |
C7—C8 | 1.430 (4) | C17—H17C | 0.9600 |
I2—Cu1—I1 | 124.42 (3) | C10—C9—H9A | 118.9 |
I2—Cu1—I1i | 121.38 (3) | C8—C9—H9A | 118.9 |
I1—Cu1—I1i | 114.05 (3) | C9—C10—C11 | 122.1 (3) |
I2—Cu1—Cu1i | 176.04 (4) | C9—C10—H10A | 118.9 |
I1—Cu1—Cu1i | 57.15 (2) | C11—C10—H10A | 118.9 |
I1i—Cu1—Cu1i | 56.91 (3) | N2—C11—C10 | 122.4 (3) |
C5—N1—C1 | 119.3 (3) | N2—C11—C12 | 121.7 (3) |
C5—N1—C16 | 118.9 (3) | C10—C11—C12 | 116.0 (3) |
C1—N1—C16 | 121.7 (3) | C13—C12—C11 | 120.9 (3) |
C11—N2—C15 | 122.0 (3) | C13—C12—H12A | 119.6 |
C11—N2—C14 | 121.7 (3) | C11—C12—H12A | 119.6 |
C15—N2—C14 | 116.3 (3) | C12—C13—C8 | 123.9 (3) |
Cu1—I1—Cu1i | 65.95 (3) | C12—C13—H13A | 118.0 |
N1—C1—C2 | 121.2 (3) | C8—C13—H13A | 118.0 |
N1—C1—H1A | 119.4 | N2—C14—H14A | 109.5 |
C2—C1—H1A | 119.4 | N2—C14—H14B | 109.5 |
C1—C2—C3 | 121.0 (3) | H14A—C14—H14B | 109.5 |
C1—C2—H2A | 119.5 | N2—C14—H14C | 109.5 |
C3—C2—H2A | 119.5 | H14A—C14—H14C | 109.5 |
C2—C3—C4 | 116.2 (3) | H14B—C14—H14C | 109.5 |
C2—C3—C6 | 120.4 (3) | N2—C15—H15A | 109.5 |
C4—C3—C6 | 123.4 (3) | N2—C15—H15B | 109.5 |
C5—C4—C3 | 120.8 (3) | H15A—C15—H15B | 109.5 |
C5—C4—H4A | 119.6 | N2—C15—H15C | 109.5 |
C3—C4—H4A | 119.6 | H15A—C15—H15C | 109.5 |
N1—C5—C4 | 121.5 (3) | H15B—C15—H15C | 109.5 |
N1—C5—H5A | 119.3 | C17—C16—N1 | 115.6 (3) |
C4—C5—H5A | 119.3 | C17—C16—H16A | 108.4 |
C7—C6—C3 | 126.0 (3) | N1—C16—H16A | 108.4 |
C7—C6—H6A | 117.0 | C17—C16—H16B | 108.4 |
C3—C6—H6A | 117.0 | N1—C16—H16B | 108.4 |
C6—C7—C8 | 128.3 (3) | H16A—C16—H16B | 107.5 |
C6—C7—H7A | 115.9 | C16—C17—H17A | 109.5 |
C8—C7—H7A | 115.9 | C16—C17—H17B | 109.5 |
C13—C8—C9 | 114.8 (3) | H17A—C17—H17B | 109.5 |
C13—C8—C7 | 120.9 (3) | C16—C17—H17C | 109.5 |
C9—C8—C7 | 124.2 (3) | H17A—C17—H17C | 109.5 |
C10—C9—C8 | 122.3 (3) | H17B—C17—H17C | 109.5 |
I2—Cu1—I1—Cu1i | −175.63 (4) | C13—C8—C9—C10 | −1.7 (6) |
I1i—Cu1—I1—Cu1i | 0.0 | C7—C8—C9—C10 | 176.3 (4) |
C5—N1—C1—C2 | 0.8 (6) | C8—C9—C10—C11 | 0.9 (6) |
C16—N1—C1—C2 | 176.8 (4) | C15—N2—C11—C10 | 178.4 (4) |
N1—C1—C2—C3 | −2.4 (7) | C14—N2—C11—C10 | 1.4 (6) |
C1—C2—C3—C4 | 2.6 (6) | C15—N2—C11—C12 | −1.9 (6) |
C1—C2—C3—C6 | −176.9 (4) | C14—N2—C11—C12 | −178.9 (4) |
C2—C3—C4—C5 | −1.5 (5) | C9—C10—C11—N2 | −179.7 (4) |
C6—C3—C4—C5 | 178.0 (3) | C9—C10—C11—C12 | 0.6 (6) |
C1—N1—C5—C4 | 0.3 (6) | N2—C11—C12—C13 | 179.1 (4) |
C16—N1—C5—C4 | −175.8 (4) | C10—C11—C12—C13 | −1.3 (6) |
C3—C4—C5—N1 | 0.1 (6) | C11—C12—C13—C8 | 0.4 (7) |
C2—C3—C6—C7 | 169.0 (4) | C9—C8—C13—C12 | 1.0 (6) |
C4—C3—C6—C7 | −10.5 (6) | C7—C8—C13—C12 | −177.0 (4) |
C3—C6—C7—C8 | −176.6 (4) | C5—N1—C16—C17 | −148.8 (4) |
C6—C7—C8—C13 | 173.7 (4) | C1—N1—C16—C17 | 35.2 (6) |
C6—C7—C8—C9 | −4.1 (6) |
Symmetry code: (i) −x, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | (C17H21N2)2[Cu2I4] |
Mr | 1141.42 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 10.707 (4), 7.367 (4), 24.127 (9) |
β (°) | 90.908 (14) |
V (Å3) | 1902.9 (14) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 4.39 |
Crystal size (mm) | 0.10 × 0.10 × 0.10 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID Imaging Plate diffractometer |
Absorption correction | Multi-scan (Higash, 1995) |
Tmin, Tmax | 0.645, 0.651 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 18111, 4356, 3506 |
Rint | 0.079 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.081, 1.05 |
No. of reflections | 4356 |
No. of parameters | 199 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.57, −0.68 |
Computer programs: TEXRAY (Molecular Structure Corporation, 1999), TEXSAN (Molecular Structure Corporation, 1999), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEX (McArdle, 1995), SHELXL97.
Cu1—I2 | 2.5019 (9) | Cu1—Cu1i | 2.8046 (13) |
Cu1—I1 | 2.5731 (9) | I1—Cu1i | 2.5800 (10) |
Cu1—I1i | 2.5800 (10) | ||
I2—Cu1—I1 | 124.42 (3) | I1—Cu1—Cu1i | 57.15 (2) |
I2—Cu1—I1i | 121.38 (3) | I1i—Cu1—Cu1i | 56.91 (3) |
I1—Cu1—I1i | 114.05 (3) | Cu1—I1—Cu1i | 65.95 (3) |
I2—Cu1—Cu1i | 176.04 (4) |
Symmetry code: (i) −x, −y+2, −z+1. |
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Organic-inorganic complex materials have received extensive attention in recent years owing to their interesting crystal structure and some special properties, such as nonlinear optical response (Cariati et al., 2001) and luminescence (Guloy et al., 2001). 4-(4-(Dimethylamino) stryl)-1-ethylpyrdinium iodide possesses large conjugation system, which will be beneficial to the nonlinera optical response. In order to understand this phenomenon better, we present here the synthesis and the structure of the title compound, (I).
As shown in Fig. 1, the crystal structure of (I) consists of an organic cation, 4-(4-(dimethylmino)stryl)-1-ethylpridinium and an in-organic anion, [Cu2I4]2-. The configuration of the anion is similar to that of [Cu2I4]2- anion reported in the tetrabutylammonium salt (Asplund et al., 1982). There are, however, somewhat smaller differences between the Cu—Iterminal and Cu—Ibridging ligand distances in the anion reported in tetrabutylammonium salt and in (I), i.e. Cu—Iterminal = 2.514 (2) Å, Cu—Ibridging = 2.566 (2) and 2.592 (2)Å in the tetrabutylammonium salt compared to 2.5019 (9), 2.5731 (9) and 2.5800 (10) Å, respectively, in (I). Moreover, the distance d(Cu—Cu) in (I), 2.8046 (13) Å, is slightly longer than that in the tetrabutylammonium salt. It seems that the Cu···Cu distance is longer than the shortest possible distance for the given coordination, but that the value 2.8046 (13) Å in (I) indicates a weak attractive Cu(I)—Cu(I) interaction (Mehrotra et al., 1978). In the crystal structure, the organic cations are surround by the anions which form centrosymmetric dimers about inversion centers resulting in the organic-inorganic complex structure.