metal-organic compounds
Di-μ-hydroxido-bis[hemiaqua(N,N,N′,N′-tetramethylethane-1,2-diamine)copper(II)] bis(tetrafluoridoborate)
aDepartment of Inorganic Chemistry, Institute of Chemistry, P. J. Šafárik University in Košice, Moyzesova 11, 041 54 Košice, Slovakia, and bDepartment of Inorganic Chemistry, Faculty of Science, Palacký University, Tř. 17. listopadu 12, 771 46 Olomouc, Czech Republic
*Correspondence e-mail: jaroslava.hanikova@student.upjs.sk
The title compound, [Cu2(OH)2(C6H16N2)2(H2O)](BF4)2, consists of dinuclear centrosymmetric [Cu2(OH)2(tmen)2(H2O)]2+ complex cations (tmen = N,N,N′,N′-tetramethylethane-1,2-diamine) and tetrafluoridoborate anions. In the cation, the CuII atom shows a slightly distorted square-pyramidal coordination geometry provided by a pair of μ-OH− anions and by the N atoms of a chelate tmen ligand in the basal plane. The apical position is statistically occupied by the O atom of a half-occupancy water molecule. The F atoms of the anion are disordered over three sets of sites with occupancies of 0.598 (9):0.269 (6):0.134 (8). The crystal packing is governed by ionic forces as well as by O—H⋯F hydrogen bonds.
Related literature
For the structures of related copper(II) complexes, see: Haníková et al. (2012); Handley et al. (2001); Černák et al. (2010). For additional structural analysis, see: Addison et al. (1984).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Oxford Diffraction, 2009); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Crystal Impact, 2007); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536812021836/rz2749sup1.cif
contains datablocks I, global, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812021836/rz2749Isup2.hkl
The dropwise addition of tmen (0.27 cm3, 5 mmol) to a blue solution of Cu(BF4)2.6H2O (1.2 g, 5 mmol) in 20 cm3 of a water:ethanol mixture (1:1 v/v) yielded a violet solution, which was filtered. After seven days blue prisms appeared ion slow evaporation of the solvent which were separated by filtration and dried on air. Yield: 0.55 g (75%).
Anal. [%] (CHNOS Elemental Analyzer vario MICRO, Elementar Analysensysteme GmbH, copper complexometrically) calculated for Cu2C12N4H36B2F8O3 (Mr = 585.32): C, 24.63; H, 6.20; N, 9.57; Cu, 21.75. Found: C, 24.70; H, 6.29; N, 9.59; Cu, 22.03. IR (KBr pellets technique, FT–IR Avatar 330 (ThermoNicolet), in cm-1): 3633 s; 3547 w; 3408 vs; 3005 w; 2922 m; 2902 m; 2860 w; 2816 w; 1622 s; 1475 vs; 1084 vs; 951 s; 807 s; 769 m; 521 s.
The electronic spectrum (Specord 250 spectrometer, Analytic Jena, in Nujol suspension) of the title compound displays a broad absorption band centred at 567 nm which may represent an envelope of transitions from components of t2g to x2–y2 level.
The hydroxy and water H atoms were located in a difference Fourier map and allowed to ride on their parent oxygen atoms with O—H = 0.85 Å and Uiso(H) = 1.5Ueq(O). The positions of all other H atoms were calculated using an appropriate riding model with C—H = 0.98 Å and Uiso(H) = 1.2Ueq(C) (methylene groups) or 1.5Ueq(C) (methyl groups). The fluorine atoms of the anion are disordered over three orientations with refined occupancies of 0.598 (9):0.269 (6):0.138 (8). In order to keep the geometric parameters of the anion chemically reasonable, during the
the B–F and F···F distances were constrained to be 1.39 (1) and 2.28 (1) Å, respectively. The fluorine atoms of the lowest contributors were refined isotropically.Data collection: CrysAlis PRO (Oxford Diffraction, 2009); cell
CrysAlis PRO (Oxford Diffraction, 2009); data reduction: CrysAlis PRO (Oxford Diffraction, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Crystal Impact, 2007); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound. Only the major component of the disordered tetrafluridoborate anion is shown. Displacement ellipsoids are drawn at the 30 % probability level. Symmetry code: (i) 2-x, 1-y, -z. | |
Fig. 2. Hydrogen bonding network in the title compound. Only the major components of the tetrafluridoborate anions are shown. Hydrogen bonds are depicted by dashed lines. Symmetry codes: (i) 2-x, 1-y, -z; (ii) 1+x, y, z. |
[Cu2(OH)2(C6H16N2)2(H2O)](BF4)2 | F(000) = 600 |
Mr = 585.32 | Dx = 1.615 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3802 reflections |
a = 7.5878 (3) Å | θ = 2.8–31.9° |
b = 14.7081 (3) Å | µ = 1.85 mm−1 |
c = 11.4164 (3) Å | T = 103 K |
β = 109.174 (4)° | Prism, blue |
V = 1203.41 (6) Å3 | 0.45 × 0.34 × 0.25 mm |
Z = 2 |
Oxford Diffraction Xcalibur Sapphire2 diffractometer | 2118 independent reflections |
Radiation source: fine-focus sealed tube | 1916 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.017 |
Detector resolution: 8.3438 pixels mm-1 | θmax = 25.0°, θmin = 2.8° |
ω scans | h = −9→6 |
Absorption correction: numerical [Clark & Reid (1995) in CrysAlis PRO (Oxford Diffraction, 2009)] | k = −17→17 |
Tmin = 0.475, Tmax = 0.630 | l = −12→13 |
9405 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)] = 0.046 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.12 | w = 1/[σ2(Fo2) + (0.0802P)2 + 2.3095P] where P = (Fo2 + 2Fc2)/3 |
2118 reflections | (Δ/σ)max < 0.001 |
168 parameters | Δρmax = 1.01 e Å−3 |
1 restraint | Δρmin = −0.61 e Å−3 |
[Cu2(OH)2(C6H16N2)2(H2O)](BF4)2 | V = 1203.41 (6) Å3 |
Mr = 585.32 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.5878 (3) Å | µ = 1.85 mm−1 |
b = 14.7081 (3) Å | T = 103 K |
c = 11.4164 (3) Å | 0.45 × 0.34 × 0.25 mm |
β = 109.174 (4)° |
Oxford Diffraction Xcalibur Sapphire2 diffractometer | 2118 independent reflections |
Absorption correction: numerical [Clark & Reid (1995) in CrysAlis PRO (Oxford Diffraction, 2009)] | 1916 reflections with I > 2σ(I) |
Tmin = 0.475, Tmax = 0.630 | Rint = 0.017 |
9405 measured reflections |
R[F2 > 2σ(F2)] = 0.046 | 1 restraint |
wR(F2) = 0.143 | H-atom parameters constrained |
S = 1.12 | Δρmax = 1.01 e Å−3 |
2118 reflections | Δρmin = −0.61 e Å−3 |
168 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 | Occ. (<1) | |
Cu1 | 0.99395 (7) | 0.44147 (3) | 0.10450 (4) | 0.0366 (2) | |
O1 | 1.1407 (5) | 0.5349 (2) | 0.0666 (3) | 0.0549 (9) | |
H1O1 | 1.2395 | 0.5509 | 0.1238 | 0.066* | |
N1 | 0.8191 (5) | 0.3470 (2) | 0.1312 (3) | 0.0327 (7) | |
N2 | 1.1260 (5) | 0.4391 (2) | 0.2902 (3) | 0.0314 (7) | |
C1 | 0.9128 (7) | 0.3110 (3) | 0.2589 (4) | 0.0415 (10) | |
H1A | 0.8201 | 0.2802 | 0.2892 | 0.050* | |
H1B | 1.0090 | 0.2659 | 0.2574 | 0.050* | |
C2 | 1.0012 (6) | 0.3876 (3) | 0.3435 (4) | 0.0409 (10) | |
H2A | 0.9036 | 0.4284 | 0.3536 | 0.049* | |
H2B | 1.0744 | 0.3635 | 0.4261 | 0.049* | |
C3 | 0.7852 (7) | 0.2687 (3) | 0.0449 (4) | 0.0439 (10) | |
H3A | 0.6988 | 0.2261 | 0.0637 | 0.066* | |
H3B | 0.9035 | 0.2378 | 0.0545 | 0.066* | |
H3C | 0.7308 | 0.2904 | −0.0406 | 0.066* | |
C4 | 0.6393 (7) | 0.3896 (3) | 0.1180 (4) | 0.0477 (11) | |
H4A | 0.5790 | 0.4079 | 0.0315 | 0.072* | |
H4B | 0.6593 | 0.4433 | 0.1716 | 0.072* | |
H4C | 0.5594 | 0.3462 | 0.1420 | 0.072* | |
C5 | 1.3102 (6) | 0.3950 (3) | 0.3208 (4) | 0.0418 (10) | |
H5A | 1.3692 | 0.3928 | 0.4110 | 0.063* | |
H5B | 1.3892 | 0.4299 | 0.2842 | 0.063* | |
H5C | 1.2947 | 0.3331 | 0.2873 | 0.063* | |
C6 | 1.1527 (6) | 0.5319 (3) | 0.3457 (4) | 0.0443 (10) | |
H6A | 1.0323 | 0.5634 | 0.3223 | 0.066* | |
H6B | 1.2393 | 0.5662 | 0.3149 | 0.066* | |
H6C | 1.2041 | 0.5271 | 0.4362 | 0.066* | |
O2 | 1.1575 (9) | 0.3292 (5) | 0.0210 (6) | 0.0530 (17) | 0.50 |
H1O2 | 1.1982 | 0.3370 | −0.0410 | 0.079* | 0.50 |
H2O2 | 1.2127 | 0.2821 | 0.0596 | 0.079* | 0.50 |
B1 | 0.3609 (3) | 0.36611 (14) | −0.2852 (2) | 0.0427 (11) | |
F1 | 0.3327 (3) | 0.44656 (14) | −0.3535 (2) | 0.0314 (13) | 0.598 (9) |
F2 | 0.2736 (3) | 0.29431 (14) | −0.3627 (2) | 0.073 (2) | 0.598 (9) |
F3 | 0.5517 (3) | 0.34845 (14) | −0.2352 (2) | 0.0541 (16) | 0.598 (9) |
F4 | 0.2853 (3) | 0.37442 (14) | −0.1896 (2) | 0.063 (2) | 0.598 (9) |
F5 | 0.2794 (3) | 0.43234 (14) | −0.3741 (2) | 0.046 (4) | 0.269 (6) |
F6 | 0.2286 (3) | 0.33315 (14) | −0.2353 (2) | 0.118 (9) | 0.269 (6) |
F7 | 0.4266 (3) | 0.29504 (14) | −0.3404 (2) | 0.114 (7) | 0.269 (6) |
F8 | 0.5095 (3) | 0.40444 (14) | −0.1910 (2) | 0.057 (3) | 0.269 (6) |
F9 | 0.2163 (3) | 0.32255 (14) | −0.3763 (2) | 0.103 (14)* | 0.134 (8) |
F10 | 0.5273 (3) | 0.31908 (14) | −0.2676 (2) | 0.046 (7)* | 0.134 (8) |
F11 | 0.3789 (3) | 0.45493 (14) | −0.3227 (2) | 0.024 (6)* | 0.134 (8) |
F12 | 0.3210 (3) | 0.36779 (14) | −0.1743 (2) | 0.067 (10)* | 0.134 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cu1 | 0.0540 (4) | 0.0325 (3) | 0.0289 (3) | −0.0106 (2) | 0.0212 (2) | 0.00740 (18) |
O1 | 0.082 (2) | 0.0584 (19) | 0.0257 (15) | −0.0393 (18) | 0.0190 (15) | 0.0040 (14) |
N1 | 0.0516 (19) | 0.0269 (16) | 0.0236 (15) | −0.0095 (14) | 0.0178 (14) | −0.0008 (13) |
N2 | 0.0404 (17) | 0.0258 (17) | 0.0333 (17) | −0.0060 (13) | 0.0193 (14) | 0.0025 (12) |
C1 | 0.061 (3) | 0.037 (2) | 0.030 (2) | −0.0131 (19) | 0.0200 (19) | 0.0049 (17) |
C2 | 0.049 (2) | 0.048 (2) | 0.0278 (19) | −0.015 (2) | 0.0164 (17) | 0.0039 (18) |
C3 | 0.067 (3) | 0.028 (2) | 0.038 (2) | −0.0014 (19) | 0.019 (2) | −0.0051 (17) |
C4 | 0.064 (3) | 0.039 (2) | 0.051 (3) | −0.007 (2) | 0.034 (2) | −0.011 (2) |
C5 | 0.045 (2) | 0.038 (2) | 0.044 (2) | −0.0001 (18) | 0.0163 (19) | −0.0053 (19) |
C6 | 0.056 (3) | 0.032 (2) | 0.046 (2) | −0.0030 (19) | 0.018 (2) | −0.0064 (19) |
O2 | 0.058 (4) | 0.077 (5) | 0.038 (3) | 0.004 (3) | 0.034 (3) | −0.006 (3) |
B1 | 0.035 (2) | 0.040 (3) | 0.044 (3) | 0.004 (2) | 0.000 (2) | 0.006 (2) |
F1 | 0.028 (2) | 0.026 (2) | 0.024 (2) | −0.007 (2) | −0.013 (2) | −0.0041 (18) |
F2 | 0.088 (4) | 0.046 (3) | 0.057 (3) | −0.019 (3) | −0.013 (3) | 0.005 (2) |
F3 | 0.040 (3) | 0.052 (3) | 0.060 (3) | 0.013 (2) | 0.003 (2) | 0.011 (3) |
F4 | 0.065 (3) | 0.085 (5) | 0.051 (3) | 0.007 (3) | 0.033 (3) | 0.029 (3) |
F5 | 0.041 (6) | 0.042 (6) | 0.037 (6) | −0.005 (5) | −0.010 (5) | −0.003 (4) |
F6 | 0.059 (8) | 0.043 (8) | 0.26 (3) | 0.002 (6) | 0.067 (12) | 0.022 (11) |
F7 | 0.042 (7) | 0.060 (8) | 0.24 (2) | −0.005 (6) | 0.046 (10) | −0.061 (11) |
F8 | 0.039 (5) | 0.084 (9) | 0.041 (6) | 0.006 (6) | 0.001 (4) | 0.004 (6) |
Cu1—O1 | 1.905 (3) | C4—H4B | 0.9800 |
Cu1—O1i | 1.916 (3) | C4—H4C | 0.9800 |
Cu1—N1 | 2.013 (3) | C5—H5A | 0.9800 |
Cu1—N2 | 2.026 (3) | C5—H5B | 0.9800 |
Cu1—O2 | 2.440 (6) | C5—H5C | 0.9800 |
Cu1—Cu1i | 2.9683 (8) | C6—H6A | 0.9800 |
O1—Cu1i | 1.916 (3) | C6—H6B | 0.9800 |
O1—H1O1 | 0.8499 | C6—H6C | 0.9800 |
N1—C4 | 1.463 (6) | O2—H1O2 | 0.8678 |
N1—C3 | 1.482 (5) | O2—H2O2 | 0.8533 |
N1—C1 | 1.493 (5) | B1—F1 | 1.3940 |
N2—C5 | 1.475 (5) | B1—F7 | 1.3942 |
N2—C2 | 1.489 (5) | B1—F6 | 1.3942 |
N2—C6 | 1.491 (5) | B1—F3 | 1.3950 |
C1—C2 | 1.492 (6) | B1—F11 | 1.3950 |
C1—H1A | 0.9900 | B1—F10 | 1.3950 |
C1—H1B | 0.9900 | B1—F4 | 1.3953 |
C2—H2A | 0.9900 | B1—F12 | 1.3954 |
C2—H2B | 0.9900 | B1—F9 | 1.3956 |
C3—H3A | 0.9800 | B1—F5 | 1.3960 |
C3—H3B | 0.9800 | B1—F8 | 1.3964 |
C3—H3C | 0.9800 | B1—F2 | 1.3969 |
C4—H4A | 0.9800 | ||
O1—Cu1—O1i | 78.06 (15) | H3A—C3—H3B | 109.5 |
O1—Cu1—N1 | 174.71 (14) | N1—C3—H3C | 109.5 |
O1i—Cu1—N1 | 97.06 (13) | H3A—C3—H3C | 109.5 |
O1—Cu1—N2 | 97.18 (13) | H3B—C3—H3C | 109.5 |
O1i—Cu1—N2 | 170.09 (14) | N1—C4—H4A | 109.5 |
N1—Cu1—N2 | 87.33 (12) | N1—C4—H4B | 109.5 |
O1—Cu1—O2 | 89.4 (2) | H4A—C4—H4B | 109.5 |
O1i—Cu1—O2 | 83.9 (2) | N1—C4—H4C | 109.5 |
N1—Cu1—O2 | 92.11 (19) | H4A—C4—H4C | 109.5 |
N2—Cu1—O2 | 104.89 (18) | H4B—C4—H4C | 109.5 |
O1—Cu1—Cu1i | 39.16 (10) | N2—C5—H5A | 109.5 |
O1i—Cu1—Cu1i | 38.90 (9) | N2—C5—H5B | 109.5 |
N1—Cu1—Cu1i | 135.92 (9) | H5A—C5—H5B | 109.5 |
N2—Cu1—Cu1i | 135.73 (9) | N2—C5—H5C | 109.5 |
O2—Cu1—Cu1i | 85.68 (16) | H5A—C5—H5C | 109.5 |
Cu1—O1—Cu1i | 101.94 (15) | H5B—C5—H5C | 109.5 |
Cu1—O1—H1O1 | 117.4 | N2—C6—H6A | 109.5 |
Cu1i—O1—H1O1 | 140.6 | N2—C6—H6B | 109.5 |
C4—N1—C3 | 108.2 (3) | H6A—C6—H6B | 109.5 |
C4—N1—C1 | 112.5 (3) | N2—C6—H6C | 109.5 |
C3—N1—C1 | 107.2 (3) | H6A—C6—H6C | 109.5 |
C4—N1—Cu1 | 109.1 (3) | H6B—C6—H6C | 109.5 |
C3—N1—Cu1 | 114.5 (3) | Cu1—O2—H1O2 | 126.3 |
C1—N1—Cu1 | 105.5 (2) | Cu1—O2—H2O2 | 125.0 |
C5—N2—C2 | 111.1 (3) | H1O2—O2—H2O2 | 106.4 |
C5—N2—C6 | 108.4 (3) | F7—B1—F6 | 109.6 |
C2—N2—C6 | 108.0 (3) | F1—B1—F3 | 109.6 |
C5—N2—Cu1 | 111.1 (3) | F11—B1—F10 | 109.5 |
C2—N2—Cu1 | 105.9 (2) | F1—B1—F4 | 109.6 |
C6—N2—Cu1 | 112.3 (3) | F3—B1—F4 | 109.5 |
C2—C1—N1 | 109.4 (3) | F11—B1—F12 | 109.5 |
C2—C1—H1A | 109.8 | F10—B1—F12 | 109.5 |
N1—C1—H1A | 109.8 | F11—B1—F9 | 109.5 |
C2—C1—H1B | 109.8 | F10—B1—F9 | 109.5 |
N1—C1—H1B | 109.8 | F12—B1—F9 | 109.4 |
H1A—C1—H1B | 108.2 | F7—B1—F5 | 109.5 |
N2—C2—C1 | 109.3 (3) | F6—B1—F5 | 109.5 |
N2—C2—H2A | 109.8 | F7—B1—F8 | 109.4 |
C1—C2—H2A | 109.8 | F6—B1—F8 | 109.5 |
N2—C2—H2B | 109.8 | F5—B1—F8 | 109.3 |
C1—C2—H2B | 109.8 | F1—B1—F2 | 109.5 |
H2A—C2—H2B | 108.3 | F3—B1—F2 | 109.3 |
N1—C3—H3A | 109.5 | F4—B1—F2 | 109.3 |
N1—C3—H3B | 109.5 | ||
O1i—Cu1—O1—Cu1i | 0.0 | O2—Cu1—N2—C5 | 17.2 (3) |
N2—Cu1—O1—Cu1i | −171.19 (16) | Cu1i—Cu1—N2—C5 | −82.1 (3) |
O2—Cu1—O1—Cu1i | 83.9 (2) | O1—Cu1—N2—C2 | 165.2 (3) |
O1i—Cu1—N1—C4 | −65.4 (3) | N1—Cu1—N2—C2 | −12.1 (3) |
N2—Cu1—N1—C4 | 105.7 (3) | O2—Cu1—N2—C2 | −103.5 (3) |
O2—Cu1—N1—C4 | −149.5 (3) | Cu1i—Cu1—N2—C2 | 157.2 (2) |
Cu1i—Cu1—N1—C4 | −63.6 (3) | O1—Cu1—N2—C6 | 47.5 (3) |
O1i—Cu1—N1—C3 | 55.9 (3) | N1—Cu1—N2—C6 | −129.7 (3) |
N2—Cu1—N1—C3 | −133.0 (3) | O2—Cu1—N2—C6 | 138.8 (3) |
O2—Cu1—N1—C3 | −28.2 (3) | Cu1i—Cu1—N2—C6 | 39.5 (3) |
Cu1i—Cu1—N1—C3 | 57.8 (3) | C4—N1—C1—C2 | −78.2 (4) |
O1i—Cu1—N1—C1 | 173.6 (3) | C3—N1—C1—C2 | 163.0 (4) |
N2—Cu1—N1—C1 | −15.3 (3) | Cu1—N1—C1—C2 | 40.6 (4) |
O2—Cu1—N1—C1 | 89.5 (3) | C5—N2—C2—C1 | −83.0 (4) |
Cu1i—Cu1—N1—C1 | 175.4 (2) | C6—N2—C2—C1 | 158.3 (4) |
O1—Cu1—N2—C5 | −74.1 (3) | Cu1—N2—C2—C1 | 37.7 (4) |
N1—Cu1—N2—C5 | 108.7 (3) | N1—C1—C2—N2 | −53.7 (5) |
Symmetry code: (i) −x+2, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1O1···F8i | 0.85 | 1.92 | 2.717 (4) | 156 |
O1—H1O1···F3i | 0.85 | 2.23 | 3.024 (4) | 155 |
O2—H1O2···F12ii | 0.87 | 2.08 | 2.942 (6) | 172 |
O2—H1O2···F4ii | 0.87 | 2.09 | 2.949 (6) | 172 |
O2—H1O2···F6ii | 0.87 | 2.31 | 3.146 (6) | 163 |
O2—H2O2···F2iii | 0.85 | 1.41 | 2.251 (8) | 167 |
O2—H2O2···F9iii | 0.85 | 1.70 | 2.491 (8) | 153 |
O2—H2O2···F7iii | 0.85 | 2.00 | 2.808 (8) | 157 |
Symmetry codes: (i) −x+2, −y+1, −z; (ii) x+1, y, z; (iii) x+1, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Cu2(OH)2(C6H16N2)2(H2O)](BF4)2 |
Mr | 585.32 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 103 |
a, b, c (Å) | 7.5878 (3), 14.7081 (3), 11.4164 (3) |
β (°) | 109.174 (4) |
V (Å3) | 1203.41 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.85 |
Crystal size (mm) | 0.45 × 0.34 × 0.25 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Sapphire2 diffractometer |
Absorption correction | Numerical [Clark & Reid (1995) in CrysAlis PRO (Oxford Diffraction, 2009)] |
Tmin, Tmax | 0.475, 0.630 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9405, 2118, 1916 |
Rint | 0.017 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.046, 0.143, 1.12 |
No. of reflections | 2118 |
No. of parameters | 168 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.01, −0.61 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Crystal Impact, 2007).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1O1···F8i | 0.85 | 1.92 | 2.717 (4) | 155.6 |
O1—H1O1···F3i | 0.85 | 2.23 | 3.024 (4) | 154.5 |
O2—H1O2···F12ii | 0.87 | 2.08 | 2.942 (6) | 172.4 |
O2—H1O2···F4ii | 0.87 | 2.09 | 2.949 (6) | 172.1 |
O2—H1O2···F6ii | 0.87 | 2.31 | 3.146 (6) | 163.1 |
O2—H2O2···F2iii | 0.85 | 1.41 | 2.251 (8) | 167.0 |
O2—H2O2···F9iii | 0.85 | 1.70 | 2.491 (8) | 153.2 |
O2—H2O2···F7iii | 0.85 | 2.00 | 2.808 (8) | 157.4 |
Symmetry codes: (i) −x+2, −y+1, −z; (ii) x+1, y, z; (iii) x+1, −y+1/2, z+1/2. |
Acknowledgements
This work was supported by the Slovak grant agency VEGA (grant 1/0089/09) and University student grants VVGS 1/12–13 and VVGS PF/2012/33.
References
Addison, A. W., Rao, T. N., Reedijk, J., van Rijn, J. & Verschoor, G. C. (1984). J. Chem. Soc. Dalton Trans. pp. 1349–1356. CSD CrossRef Web of Science Google Scholar
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Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887–897. CrossRef CAS Web of Science IUCr Journals Google Scholar
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As a continuation of our study on crystal structures and magnetic properties of Cu(II) complexes with general formula Cu(L–L)2X2 (L–L are en or its N-methylated derivates, X are anions based on fluorine atom; Haníková et al., 2012; Černák et al., 2010) herein we report the crystal structure of the title complex [{Cu(H2O)0.5(OH)(tmen)}2](BF4)2 (tmen is N,N,N',N'-tetramethyl-ethane-1,2-diamine). In contrast to the previously studied complexes Cu(L–L)2X2 in which two diamine ligands L–L were coordinated to the Cu(II) atom, in the title complex only one tmen ligand is coordinated, presumably due to steric effects. The crystal structure is essentially ionic and is built up of the centrosymmetric dimeric complex cations and tetrafluoridoborate anions (Fig. 1). In the centrosymmetric complex cation the Cu(II) atom is at 50% pentacoordinated. The calculated value of the τ parameter (τ = 16.4%; Addison et al., 1984) indicates that the coordination polyhedron is close to tetragonal pyramid. On the other hand, in the similar [{Cu(OH)(tmen)}2](2BF4)2 complex the Cu(II) atom exhibits square coordination (Handley et al., 2001). The two µ2-hydroxido ligands link the Cu(II) atoms somewhat unsymmetrically, one Cu—O distance being 1.905 (3) Å and the the other 1.916 (3) Å. The coordination plane is completed by two nitrogen atoms from a chelate tmen ligand and the apical position is statistically (50%) occupied by the O atom of a disordered water molecule at a longer Cu—O distance of 2.440 (6) Å. The BF4- anion exhibits a high degree of disorder, the fluorine atoms occupying three disordered positions with refined s.o.f.'s of 0.598 (9):0.269 (6):0.138 (8). The crystal structure (Fig. 2) is additionally stabilized by O—H···F hydrogen bonds (Table 1).