metal-organic compounds
[2-({3-[(3-Aminopropyl)amino]propyl}iminomethyl)phenolato-κ4O,N,N′′,N′′′]bromidocopper(II)
aDepartment of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
*Correspondence e-mail: rbutcher99@yahoo.com
In the title compound, [Cu(C13H20N3O)Br], the Cu(II) atom is coordinated by three N atoms and one O atom from the deprotonated ligand derived from the Schiff base condensation of 3,3-iminobis(propylamine) and salicylaldehyde. The three N and the O atoms occupy equatorial positions, while the Br atom occupies an axial position. The amine H atoms form intermolecular hydrogen bonds with the Br and O atoms of adjoining molecules
Related literature
For asymmetry parameters, see: Addison et al. (1984). For the preparation of the ligand, see: Pajunen et al. (2000).
Experimental
Crystal data
|
Refinement
|
|
Data collection: CrysAlis PRO (Oxford Diffraction, 2007); 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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810042923/pb2044sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810042923/pb2044Isup2.hkl
The synthesis of the 3,3'-iminobis(propylamine)salicylaldimine was accomplished by the reaction of a solution of (5 g, 37.34 mmol) 3,3-iminobispropylamine in 20 ml methanol with a solution of (9.13 g, 74.68 mmol) salicylaldehyde in 40 ml methanol. The reaction mixture was refluxed for 24 h and then evaporated under reduced pressure to give a brownish yellow oily liquid.
The complex was synthesized by mixing a solution of 3,3'-iminobis(propylamine)salicylaldehyde (0.25 g, 0.74 mmol) in 10 ml methanol to a solution of (0.21 g, 1.48 mmol) CuBr in 10 ml methanol. The mixture was stirred for 24 h at room temperature. At the end of the reaction, the reaction mixture was evaporated under reduced pressure to afford greenish solids. The solids were dissolved in DMF and filtered. The filtrate solution of the complex was layered with diethyl ether for slow solvent diffusion crystallization method. Crystals suitable for X-ray diffraction were obtained.
H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms with a C—H distances of 0.93 and 0.97 Å [Uiso(H) = 1.2Ueq(C)]. The H atoms attached to N were idealized with an primary and secondary N–H distances of 0.90 and 0.91 Å, respectively.
The stucture of the title compound, (I), is shown below. Dimensions are available in the archived CIF.
The reported structure is related to a previously published structure that contains a mononuclear copper(II) complex of a Schiff base resulting from the condensation of an imidazole-aldehyde with 3,3-iminobispropylamine (Pajunen et al., 2000). In this paper we report the synthesis of a new copper(II) complex containing a phenolato ligand in place of the imidazole. As in the latter case, while the reaction was carried out with an amine:salicylaldehyde ratio of 1:2, the resulting Schiff base ligand was the condensation product of one salicylaldehyde molecule and one amine molecule thus the ligand contains one imino and two amine N's. One difference between the copper complexes of the two ligands is that the copper(II) complex of the imidazole ligand is a cation with methanol as one of the ligands and an uncoordinated perchlorate anion while the title compound contains coordinated Br- and is thus neutral.
In the title compound C13H20BrCuN3O, the Cu is penta-coordinated with the phenolic O and N atoms forming a plane and with an axial bromide anion and the Cu 0.205 (1) Å out of the basal plane. Thus the overall geometry is square pyramidal [τ = 0.045 (Addison et al., 1984)]. The bond distance between Cu(II) and the phenolic O is 1.943 (2) Å which is shorter than the Cu—N distances involving the amine N's, i.e., Cu N1 1.998 (3); Cu N3 2.029 (3); Cu N2 2.061 (3) Å. The apical Cu—Br distance is 2.8555 (5) Å.
The amine protons form intermolecular hydrogen bonds with the Br and O atoms of adjoining molecules.
For asymmetry parameters, see: Addison et al. (1984). For the preparation of the ligand, see: Pajunen et al. (2000).
Data collection: CrysAlis PRO (Oxford Diffraction, 2007); cell
CrysAlis PRO (Oxford Diffraction, 2007); data reduction: CrysAlis PRO (Oxford Diffraction, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).[Cu(C13H20N3O)Br] | F(000) = 1528 |
Mr = 377.77 | Dx = 1.744 Mg m−3 |
Orthorhombic, Pbca | Cu Kα radiation, λ = 1.54184 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 6661 reflections |
a = 12.3272 (2) Å | θ = 4.2–77.1° |
b = 11.34425 (19) Å | µ = 5.36 mm−1 |
c = 20.5729 (4) Å | T = 173 K |
V = 2876.98 (9) Å3 | Plate, blue |
Z = 8 | 0.44 × 0.23 × 0.07 mm |
Oxford Diffraction Xcalibur Ruby Gemini diffractometer | 3021 independent reflections |
Radiation source: fine-focus sealed tube | 2939 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
Detector resolution: 10.5081 pixels mm-1 | θmax = 77.5°, θmin = 5.7° |
ω scans | h = −14→15 |
Absorption correction: analytical [CrysAlis RED (Oxford Diffraction, 2007); based on expressions derived by Clark & Reid (1995)] | k = −14→8 |
Tmin = 0.211, Tmax = 0.697 | l = −25→15 |
8196 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)] = 0.039 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.09 | w = 1/[σ2(Fo2) + (0.0427P)2 + 9.8873P] where P = (Fo2 + 2Fc2)/3 |
3021 reflections | (Δ/σ)max = 0.002 |
172 parameters | Δρmax = 1.19 e Å−3 |
0 restraints | Δρmin = −0.77 e Å−3 |
[Cu(C13H20N3O)Br] | V = 2876.98 (9) Å3 |
Mr = 377.77 | Z = 8 |
Orthorhombic, Pbca | Cu Kα radiation |
a = 12.3272 (2) Å | µ = 5.36 mm−1 |
b = 11.34425 (19) Å | T = 173 K |
c = 20.5729 (4) Å | 0.44 × 0.23 × 0.07 mm |
Oxford Diffraction Xcalibur Ruby Gemini diffractometer | 3021 independent reflections |
Absorption correction: analytical [CrysAlis RED (Oxford Diffraction, 2007); based on expressions derived by Clark & Reid (1995)] | 2939 reflections with I > 2σ(I) |
Tmin = 0.211, Tmax = 0.697 | Rint = 0.024 |
8196 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | 0 restraints |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.09 | Δρmax = 1.19 e Å−3 |
3021 reflections | Δρmin = −0.77 e Å−3 |
172 parameters |
Experimental. Absorption correction: CrysAlis RED (Oxford Diffraction, 2007). Analytical numeric absorption correction using a multifaceted crystal model based on expressions derived by Clark & Reid. [Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897] |
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 | ||
Cu | 0.32735 (4) | 0.48683 (4) | 0.57075 (2) | 0.01378 (13) | |
Br | 0.39440 (3) | 0.72635 (3) | 0.556355 (16) | 0.02033 (12) | |
O1 | 0.46552 (18) | 0.4169 (2) | 0.59480 (10) | 0.0186 (4) | |
N1 | 0.2822 (2) | 0.4932 (2) | 0.66398 (12) | 0.0161 (5) | |
N2 | 0.1756 (2) | 0.5198 (3) | 0.53280 (14) | 0.0229 (6) | |
H2B | 0.1410 | 0.4490 | 0.5305 | 0.027* | |
N3 | 0.3774 (2) | 0.4431 (2) | 0.47993 (12) | 0.0171 (5) | |
H3B | 0.4019 | 0.5089 | 0.4604 | 0.021* | |
H3C | 0.4339 | 0.3934 | 0.4836 | 0.021* | |
C1 | 0.4937 (2) | 0.3662 (3) | 0.64894 (14) | 0.0149 (6) | |
C2 | 0.5933 (3) | 0.3039 (3) | 0.65136 (15) | 0.0173 (6) | |
H2A | 0.6367 | 0.3000 | 0.6144 | 0.021* | |
C3 | 0.6269 (3) | 0.2487 (3) | 0.70795 (17) | 0.0202 (6) | |
H3A | 0.6927 | 0.2087 | 0.7084 | 0.024* | |
C4 | 0.5638 (3) | 0.2521 (3) | 0.76433 (15) | 0.0224 (7) | |
H4A | 0.5866 | 0.2142 | 0.8020 | 0.027* | |
C5 | 0.4670 (3) | 0.3130 (3) | 0.76273 (15) | 0.0204 (6) | |
H5A | 0.4245 | 0.3159 | 0.8001 | 0.025* | |
C6 | 0.4306 (3) | 0.3708 (3) | 0.70627 (15) | 0.0166 (6) | |
C7 | 0.3314 (3) | 0.4381 (3) | 0.71007 (15) | 0.0181 (6) | |
H7A | 0.2990 | 0.4421 | 0.7508 | 0.022* | |
C8 | 0.1888 (3) | 0.5655 (3) | 0.68384 (17) | 0.0251 (7) | |
H8A | 0.2099 | 0.6479 | 0.6833 | 0.030* | |
H8B | 0.1691 | 0.5453 | 0.7281 | 0.030* | |
C9 | 0.0905 (3) | 0.5495 (3) | 0.64062 (16) | 0.0197 (6) | |
H9A | 0.0738 | 0.4661 | 0.6376 | 0.024* | |
H9B | 0.0288 | 0.5884 | 0.6606 | 0.024* | |
C10 | 0.1058 (3) | 0.5980 (3) | 0.57295 (18) | 0.0276 (8) | |
H10A | 0.0355 | 0.6064 | 0.5522 | 0.033* | |
H10B | 0.1386 | 0.6755 | 0.5756 | 0.033* | |
C11 | 0.1810 (3) | 0.5657 (3) | 0.46581 (17) | 0.0253 (7) | |
H11A | 0.2339 | 0.6290 | 0.4644 | 0.030* | |
H11B | 0.1110 | 0.5991 | 0.4546 | 0.030* | |
C12 | 0.2108 (3) | 0.4752 (3) | 0.41555 (16) | 0.0227 (7) | |
H12A | 0.2365 | 0.5156 | 0.3770 | 0.027* | |
H12B | 0.1460 | 0.4318 | 0.4036 | 0.027* | |
C13 | 0.2965 (3) | 0.3883 (3) | 0.43705 (15) | 0.0213 (6) | |
H13A | 0.2621 | 0.3235 | 0.4598 | 0.026* | |
H13B | 0.3328 | 0.3565 | 0.3991 | 0.026* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cu | 0.0140 (2) | 0.0144 (2) | 0.0130 (2) | 0.00279 (16) | −0.00072 (16) | 0.00046 (15) |
Br | 0.0271 (2) | 0.01531 (18) | 0.01858 (18) | 0.00442 (12) | −0.00268 (12) | −0.00103 (11) |
O1 | 0.0161 (10) | 0.0234 (11) | 0.0162 (10) | 0.0068 (9) | 0.0011 (8) | 0.0063 (8) |
N1 | 0.0150 (12) | 0.0182 (12) | 0.0151 (12) | 0.0019 (10) | 0.0023 (10) | −0.0021 (9) |
N2 | 0.0202 (14) | 0.0256 (14) | 0.0228 (14) | 0.0046 (11) | −0.0023 (11) | 0.0012 (11) |
N3 | 0.0168 (12) | 0.0193 (13) | 0.0151 (12) | 0.0006 (10) | −0.0021 (10) | 0.0015 (10) |
C1 | 0.0166 (14) | 0.0123 (13) | 0.0159 (13) | −0.0015 (11) | −0.0025 (11) | 0.0003 (10) |
C2 | 0.0187 (15) | 0.0150 (14) | 0.0183 (14) | 0.0009 (12) | −0.0012 (11) | 0.0004 (12) |
C3 | 0.0204 (15) | 0.0158 (13) | 0.0243 (16) | 0.0038 (12) | −0.0088 (13) | −0.0003 (12) |
C4 | 0.0300 (18) | 0.0215 (14) | 0.0155 (15) | 0.0035 (14) | −0.0086 (13) | 0.0015 (12) |
C5 | 0.0265 (16) | 0.0212 (15) | 0.0135 (14) | −0.0010 (13) | −0.0008 (12) | −0.0014 (11) |
C6 | 0.0166 (14) | 0.0163 (14) | 0.0168 (13) | −0.0021 (11) | −0.0032 (11) | −0.0020 (11) |
C7 | 0.0194 (15) | 0.0215 (15) | 0.0135 (13) | −0.0010 (12) | 0.0027 (11) | −0.0025 (11) |
C8 | 0.0217 (16) | 0.0308 (17) | 0.0228 (16) | 0.0092 (14) | −0.0010 (13) | −0.0071 (14) |
C9 | 0.0148 (14) | 0.0206 (15) | 0.0238 (15) | 0.0016 (12) | 0.0020 (12) | −0.0021 (12) |
C10 | 0.0206 (17) | 0.0331 (19) | 0.0292 (18) | 0.0112 (14) | 0.0036 (13) | 0.0079 (15) |
C11 | 0.0262 (17) | 0.0233 (16) | 0.0262 (17) | 0.0038 (14) | −0.0072 (14) | 0.0013 (14) |
C12 | 0.0211 (16) | 0.0259 (17) | 0.0211 (15) | −0.0044 (13) | −0.0072 (13) | 0.0032 (13) |
C13 | 0.0214 (15) | 0.0247 (16) | 0.0180 (14) | −0.0010 (13) | 0.0007 (12) | −0.0054 (12) |
Cu—O1 | 1.943 (2) | C4—H4A | 0.9300 |
Cu—N1 | 1.998 (3) | C5—C6 | 1.407 (4) |
Cu—N3 | 2.029 (3) | C5—H5A | 0.9300 |
Cu—N2 | 2.061 (3) | C6—C7 | 1.444 (4) |
Cu—Br | 2.8555 (5) | C7—H7A | 0.9300 |
O1—C1 | 1.301 (4) | C8—C9 | 1.514 (5) |
N1—C7 | 1.288 (4) | C8—H8A | 0.9700 |
N1—C8 | 1.472 (4) | C8—H8B | 0.9700 |
N2—C11 | 1.475 (4) | C9—C10 | 1.508 (5) |
N2—C10 | 1.487 (4) | C9—H9A | 0.9700 |
N2—H2B | 0.9100 | C9—H9B | 0.9700 |
N3—C13 | 1.469 (4) | C10—H10A | 0.9700 |
N3—H3B | 0.9000 | C10—H10B | 0.9700 |
N3—H3C | 0.9000 | C11—C12 | 1.503 (5) |
C1—C6 | 1.414 (4) | C11—H11A | 0.9700 |
C1—C2 | 1.418 (4) | C11—H11B | 0.9700 |
C2—C3 | 1.385 (4) | C12—C13 | 1.511 (5) |
C2—H2A | 0.9300 | C12—H12A | 0.9700 |
C3—C4 | 1.397 (5) | C12—H12B | 0.9700 |
C3—H3A | 0.9300 | C13—H13A | 0.9700 |
C4—C5 | 1.379 (5) | C13—H13B | 0.9700 |
O1—Cu—N1 | 90.84 (10) | C5—C6—C7 | 118.1 (3) |
O1—Cu—N3 | 82.43 (10) | C1—C6—C7 | 122.0 (3) |
N1—Cu—N3 | 167.76 (11) | N1—C7—C6 | 128.0 (3) |
O1—Cu—N2 | 165.04 (11) | N1—C7—H7A | 116.0 |
N1—Cu—N2 | 95.97 (11) | C6—C7—H7A | 116.0 |
N3—Cu—N2 | 88.36 (11) | N1—C8—C9 | 113.4 (3) |
O1—Cu—Br | 99.26 (7) | N1—C8—H8A | 108.9 |
N1—Cu—Br | 98.38 (8) | C9—C8—H8A | 108.9 |
N3—Cu—Br | 92.81 (8) | N1—C8—H8B | 108.9 |
N2—Cu—Br | 92.92 (8) | C9—C8—H8B | 108.9 |
C1—O1—Cu | 129.3 (2) | H8A—C8—H8B | 107.7 |
C7—N1—C8 | 115.8 (3) | C10—C9—C8 | 113.5 (3) |
C7—N1—Cu | 123.9 (2) | C10—C9—H9A | 108.9 |
C8—N1—Cu | 120.3 (2) | C8—C9—H9A | 108.9 |
C11—N2—C10 | 109.5 (3) | C10—C9—H9B | 108.9 |
C11—N2—Cu | 112.1 (2) | C8—C9—H9B | 108.9 |
C10—N2—Cu | 115.0 (2) | H9A—C9—H9B | 107.7 |
C11—N2—H2B | 106.5 | N2—C10—C9 | 111.6 (3) |
C10—N2—H2B | 106.5 | N2—C10—H10A | 109.3 |
Cu—N2—H2B | 106.5 | C9—C10—H10A | 109.3 |
C13—N3—Cu | 116.8 (2) | N2—C10—H10B | 109.3 |
C13—N3—H3B | 108.1 | C9—C10—H10B | 109.3 |
Cu—N3—H3B | 108.1 | H10A—C10—H10B | 108.0 |
C13—N3—H3C | 108.1 | N2—C11—C12 | 114.3 (3) |
Cu—N3—H3C | 108.1 | N2—C11—H11A | 108.7 |
H3B—N3—H3C | 107.3 | C12—C11—H11A | 108.7 |
O1—C1—C6 | 123.4 (3) | N2—C11—H11B | 108.7 |
O1—C1—C2 | 118.8 (3) | C12—C11—H11B | 108.7 |
C6—C1—C2 | 117.7 (3) | H11A—C11—H11B | 107.6 |
C3—C2—C1 | 120.9 (3) | C11—C12—C13 | 114.5 (3) |
C3—C2—H2A | 119.6 | C11—C12—H12A | 108.6 |
C1—C2—H2A | 119.6 | C13—C12—H12A | 108.6 |
C2—C3—C4 | 121.3 (3) | C11—C12—H12B | 108.6 |
C2—C3—H3A | 119.3 | C13—C12—H12B | 108.6 |
C4—C3—H3A | 119.3 | H12A—C12—H12B | 107.6 |
C5—C4—C3 | 118.4 (3) | N3—C13—C12 | 112.0 (3) |
C5—C4—H4A | 120.8 | N3—C13—H13A | 109.2 |
C3—C4—H4A | 120.8 | C12—C13—H13A | 109.2 |
C4—C5—C6 | 121.9 (3) | N3—C13—H13B | 109.2 |
C4—C5—H5A | 119.0 | C12—C13—H13B | 109.2 |
C6—C5—H5A | 119.0 | H13A—C13—H13B | 107.9 |
C5—C6—C1 | 119.8 (3) | ||
N1—Cu—O1—C1 | 17.0 (3) | O1—C1—C2—C3 | 179.8 (3) |
N3—Cu—O1—C1 | −152.8 (3) | C6—C1—C2—C3 | 0.5 (4) |
N2—Cu—O1—C1 | −100.3 (5) | C1—C2—C3—C4 | 0.3 (5) |
Br—Cu—O1—C1 | 115.6 (2) | C2—C3—C4—C5 | −0.6 (5) |
O1—Cu—N1—C7 | −13.5 (3) | C3—C4—C5—C6 | 0.2 (5) |
N3—Cu—N1—C7 | 42.8 (6) | C4—C5—C6—C1 | 0.6 (5) |
N2—Cu—N1—C7 | 153.1 (3) | C4—C5—C6—C7 | −176.5 (3) |
Br—Cu—N1—C7 | −113.0 (3) | O1—C1—C6—C5 | 179.8 (3) |
O1—Cu—N1—C8 | 165.4 (2) | C2—C1—C6—C5 | −0.9 (4) |
N3—Cu—N1—C8 | −138.2 (5) | O1—C1—C6—C7 | −3.3 (5) |
N2—Cu—N1—C8 | −27.9 (3) | C2—C1—C6—C7 | 176.0 (3) |
Br—Cu—N1—C8 | 65.9 (2) | C8—N1—C7—C6 | −173.4 (3) |
O1—Cu—N2—C11 | −84.8 (5) | Cu—N1—C7—C6 | 5.6 (5) |
N1—Cu—N2—C11 | 158.5 (2) | C5—C6—C7—N1 | −177.0 (3) |
N3—Cu—N2—C11 | −33.0 (2) | C1—C6—C7—N1 | 6.0 (5) |
Br—Cu—N2—C11 | 59.8 (2) | C7—N1—C8—C9 | −134.5 (3) |
O1—Cu—N2—C10 | 149.1 (4) | Cu—N1—C8—C9 | 46.5 (4) |
N1—Cu—N2—C10 | 32.5 (3) | N1—C8—C9—C10 | −68.5 (4) |
N3—Cu—N2—C10 | −159.0 (2) | C11—N2—C10—C9 | 175.5 (3) |
Br—Cu—N2—C10 | −66.3 (2) | Cu—N2—C10—C9 | −57.1 (4) |
O1—Cu—N3—C13 | 135.8 (2) | C8—C9—C10—N2 | 75.6 (4) |
N1—Cu—N3—C13 | 78.7 (6) | C10—N2—C11—C12 | −157.6 (3) |
N2—Cu—N3—C13 | −32.4 (2) | Cu—N2—C11—C12 | 73.4 (3) |
Br—Cu—N3—C13 | −125.2 (2) | N2—C11—C12—C13 | −39.1 (4) |
Cu—O1—C1—C6 | −11.3 (4) | Cu—N3—C13—C12 | 70.9 (3) |
Cu—O1—C1—C2 | 169.3 (2) | C11—C12—C13—N3 | −34.9 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2B···Bri | 0.91 | 2.62 | 3.472 (3) | 157 |
N3—H3B···O1ii | 0.90 | 2.16 | 2.938 (3) | 144 |
N3—H3C···Brii | 0.90 | 2.65 | 3.488 (3) | 156 |
Symmetry codes: (i) −x+1/2, y−1/2, z; (ii) −x+1, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Cu(C13H20N3O)Br] |
Mr | 377.77 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 173 |
a, b, c (Å) | 12.3272 (2), 11.34425 (19), 20.5729 (4) |
V (Å3) | 2876.98 (9) |
Z | 8 |
Radiation type | Cu Kα |
µ (mm−1) | 5.36 |
Crystal size (mm) | 0.44 × 0.23 × 0.07 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur Ruby Gemini diffractometer |
Absorption correction | Analytical [CrysAlis RED (Oxford Diffraction, 2007); based on expressions derived by Clark & Reid (1995)] |
Tmin, Tmax | 0.211, 0.697 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8196, 3021, 2939 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.633 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.096, 1.09 |
No. of reflections | 3021 |
No. of parameters | 172 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.19, −0.77 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Cu—O1 | 1.943 (2) | Cu—N2 | 2.061 (3) |
Cu—N1 | 1.998 (3) | Cu—Br | 2.8555 (5) |
Cu—N3 | 2.029 (3) | ||
O1—Cu—N1 | 90.84 (10) | N3—Cu—N2 | 88.36 (11) |
O1—Cu—N3 | 82.43 (10) | O1—Cu—Br | 99.26 (7) |
N1—Cu—N3 | 167.76 (11) | N1—Cu—Br | 98.38 (8) |
O1—Cu—N2 | 165.04 (11) | N3—Cu—Br | 92.81 (8) |
N1—Cu—N2 | 95.97 (11) | N2—Cu—Br | 92.92 (8) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2B···Bri | 0.91 | 2.62 | 3.472 (3) | 156.7 |
N3—H3B···O1ii | 0.90 | 2.16 | 2.938 (3) | 144.3 |
N3—H3C···Brii | 0.90 | 2.65 | 3.488 (3) | 156.2 |
Symmetry codes: (i) −x+1/2, y−1/2, z; (ii) −x+1, −y+1, −z+1. |
Acknowledgements
RJB wishes to acknowledge the NSF-MRI program (grant CHE-0619278) for funds to purchase the diffractometer.
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
Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887–897. CrossRef CAS Web of Science IUCr Journals Google Scholar
Oxford Diffraction (2007). CrysAlis PRO and CrysAlis RED. Oxford Diffraction Ltd, Abingdon, England. Google Scholar
Pajunen, A., Cámara, F., Dominques-Vera, J. M. & Colacio, E. (2000). Acta Cryst. C56, e49–e50. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
The stucture of the title compound, (I), is shown below. Dimensions are available in the archived CIF.
The reported structure is related to a previously published structure that contains a mononuclear copper(II) complex of a Schiff base resulting from the condensation of an imidazole-aldehyde with 3,3-iminobispropylamine (Pajunen et al., 2000). In this paper we report the synthesis of a new copper(II) complex containing a phenolato ligand in place of the imidazole. As in the latter case, while the reaction was carried out with an amine:salicylaldehyde ratio of 1:2, the resulting Schiff base ligand was the condensation product of one salicylaldehyde molecule and one amine molecule thus the ligand contains one imino and two amine N's. One difference between the copper complexes of the two ligands is that the copper(II) complex of the imidazole ligand is a cation with methanol as one of the ligands and an uncoordinated perchlorate anion while the title compound contains coordinated Br- and is thus neutral.
In the title compound C13H20BrCuN3O, the Cu is penta-coordinated with the phenolic O and N atoms forming a plane and with an axial bromide anion and the Cu 0.205 (1) Å out of the basal plane. Thus the overall geometry is square pyramidal [τ = 0.045 (Addison et al., 1984)]. The bond distance between Cu(II) and the phenolic O is 1.943 (2) Å which is shorter than the Cu—N distances involving the amine N's, i.e., Cu N1 1.998 (3); Cu N3 2.029 (3); Cu N2 2.061 (3) Å. The apical Cu—Br distance is 2.8555 (5) Å.
The amine protons form intermolecular hydrogen bonds with the Br and O atoms of adjoining molecules.