Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536803017872/ww6109sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536803017872/ww6109Isup2.hkl |
CCDC reference: 222816
The title compound was synthesized by the following procedure. To a stirred solution of trans-[(PnBu3)2PtCl2] (0.38 g, 0.5 mmol) and 3-ethynylcarbazole (0.19 g, 1.0 mmol) in CH2Cl2/iPr2NH (50 ml, 1:1 v/v) under nitrogen was added a catalytic amount of CuI (5 mg). The yellow solution was stirred at room temperature for 15 h, after which all volatile components were removed under reduced pressure. The residue was dissolved in CH2Cl2 and passed through a silica column eluting with hexane/CH2Cl2 (1:1, v/v). Removal of the solvents under vacuo gave the title complex as a pale-yellow solid in 72% yield.
Aromatic, methylene and methyl H atom types were constrained as riding atoms fixed to the parent atoms with distances of 0.95, 0.99 and 0.98 Å, respectively. The isotropic displacement parameters were fixed to 120% of that of the parent atom for aromatic and methylene H atoms and 150% for methyl H atoms.
In this paper, we report the structural characterization of the title compound, (I), which is a mononuclear platinum(II) di-yne species, trans-[Pt(PnBu3)2(—C≡CR)2] (R = carbazol-3-yl). Such platinum-containing species form the building blocks for rigid-rod organometallic poly-ynes of general formula trans-[Pt(PnBu3)2—C≡C—R—C≡C—]∞ (R = aromatic or heteroaromatic linker unit). Platinum(II) poly-ynes are of immense current interest due to π-electron conjugation along the backbone, donor–acceptor metal–ligand interactions and novel photophysical properties (Wittmann et al., 1994; Beljonne et al., 1996; Younus et al., 1998; Chawdhury et al., 1998, 1999; Khan et al., 2002, 2003). They possess interesting optoelectronic properties useful for application in light-emitting diodes and photocells (Wilson et al., 2000, 2001). Precursors to these species, such as the title compound, are studied as models of the molecular and electronic properties and structure-property relationships in the metal poly-ynes.
The structure of (I) exhibits a C—H···N close contact between alkynyl atom H25a and N1, with a C25···N1 distance of 3.674 (5) Å (Table 2).
Data collection: COLLECT (Nonius, 1997); cell refinement: HKL SCALEPACK (Otwinowski & Minor, 1997); data reduction: HKL DENZO (Otwinowski & Minor, 1997) and SCALEPACK; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997), X-SEED (Barbour, 1999) and POV-RAY for Windows (Cason, 1999); software used to prepare material for publication: WinGX publication routines (Farrugia, 1999).
[Pt(C12H27P)2(C14H8N)2] | F(000) = 1008 |
Mr = 980.13 | Dx = 1.359 Mg m−3 |
Monoclinic, P21/a | Mo Kα radiation, λ = 0.71073 Å |
a = 9.2860 (1) Å | Cell parameters from 25483 reflections |
b = 19.4330 (3) Å | θ = 2.9–27.5° |
c = 13.6980 (2) Å | µ = 3.03 mm−1 |
β = 104.238 (1)° | T = 150 K |
V = 2395.94 (6) Å3 | Block, white |
Z = 2 | 0.33 × 0.25 × 0.13 mm |
Bruker–Nonius KappaCCD diffractometer | 3270 reflections with I > 2σ(I) |
φ and ω scans | Rint = 0.070 |
Absorption correction: multi-scan (SORTAV; Blessing, 1995) | θmax = 25.0°, θmin = 3.9° |
Tmin = 0.538, Tmax = 0.683 | h = −11→11 |
35095 measured reflections | k = −23→23 |
4221 independent reflections | l = −16→16 |
Refinement on F2 | H-atom parameters constrained |
Least-squares matrix: full | w = 1/[σ2(Fo2) + (0.0312P)2 + 0.9277P] where P = (Fo2 + 2Fc2)/3 |
R[F2 > 2σ(F2)] = 0.024 | (Δ/σ)max < 0.001 |
wR(F2) = 0.062 | Δρmax = 0.70 e Å−3 |
S = 1.03 | Δρmin = −1.32 e Å−3 |
4221 reflections | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
260 parameters | Extinction coefficient: 0.0016 (3) |
0 restraints |
[Pt(C12H27P)2(C14H8N)2] | V = 2395.94 (6) Å3 |
Mr = 980.13 | Z = 2 |
Monoclinic, P21/a | Mo Kα radiation |
a = 9.2860 (1) Å | µ = 3.03 mm−1 |
b = 19.4330 (3) Å | T = 150 K |
c = 13.6980 (2) Å | 0.33 × 0.25 × 0.13 mm |
β = 104.238 (1)° |
Bruker–Nonius KappaCCD diffractometer | 4221 independent reflections |
Absorption correction: multi-scan (SORTAV; Blessing, 1995) | 3270 reflections with I > 2σ(I) |
Tmin = 0.538, Tmax = 0.683 | Rint = 0.070 |
35095 measured reflections |
R[F2 > 2σ(F2)] = 0.024 | 0 restraints |
wR(F2) = 0.062 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.70 e Å−3 |
4221 reflections | Δρmin = −1.32 e Å−3 |
260 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. |
x | y | z | Uiso*/Ueq | ||
C1 | −0.9298 (4) | 0.1955 (2) | −0.5822 (3) | 0.0479 (10) | |
H1 | −1.0071 | 0.2058 | −0.64 | 0.057* | |
C2 | −0.9142 (4) | 0.23525 (19) | −0.4978 (3) | 0.0439 (10) | |
H2 | −0.9795 | 0.2726 | −0.4961 | 0.053* | |
C3 | −0.7997 (4) | 0.21912 (16) | −0.4149 (2) | 0.0319 (8) | |
C4 | −0.7016 (3) | 0.16412 (15) | −0.4165 (2) | 0.0277 (7) | |
C5 | −0.7203 (4) | 0.12433 (18) | −0.5033 (2) | 0.0371 (8) | |
H5 | −0.6552 | 0.087 | −0.5059 | 0.044* | |
C6 | −0.8352 (4) | 0.1400 (2) | −0.5858 (3) | 0.0449 (9) | |
H6 | −0.8498 | 0.113 | −0.6452 | 0.054* | |
C7 | −0.6357 (3) | 0.21772 (15) | −0.2628 (2) | 0.0264 (7) | |
C8 | −0.5550 (4) | 0.23210 (15) | −0.1652 (2) | 0.0298 (8) | |
H8 | −0.5814 | 0.2693 | −0.1281 | 0.036* | |
C9 | −0.4354 (4) | 0.19049 (15) | −0.1244 (2) | 0.0291 (7) | |
H9 | −0.3792 | 0.1997 | −0.0578 | 0.035* | |
C10 | −0.3925 (3) | 0.13462 (15) | −0.1770 (2) | 0.0260 (7) | |
C11 | −0.4738 (3) | 0.12194 (15) | −0.2752 (2) | 0.0240 (7) | |
H11 | −0.4462 | 0.0852 | −0.3125 | 0.029* | |
C12 | −0.5956 (3) | 0.16302 (15) | −0.3189 (2) | 0.0247 (7) | |
C13 | −0.2679 (4) | 0.09229 (16) | −0.1272 (2) | 0.0268 (7) | |
C14 | −0.1660 (4) | 0.05812 (16) | −0.0815 (2) | 0.0281 (7) | |
C15 | 0.3196 (3) | 0.07956 (16) | −0.0225 (2) | 0.0304 (7) | |
H15A | 0.3695 | 0.0518 | 0.0368 | 0.036* | |
H15B | 0.3913 | 0.0861 | −0.0645 | 0.036* | |
C16 | 0.2821 (4) | 0.15066 (16) | 0.0146 (2) | 0.0349 (8) | |
H16A | 0.3763 | 0.1759 | 0.0412 | 0.042* | |
H16B | 0.2242 | 0.1768 | −0.0441 | 0.042* | |
C17 | 0.1956 (4) | 0.15002 (19) | 0.0951 (3) | 0.0428 (9) | |
H17A | 0.0915 | 0.1367 | 0.0639 | 0.051* | |
H17B | 0.2386 | 0.1147 | 0.146 | 0.051* | |
C18 | 0.1964 (6) | 0.2188 (2) | 0.1472 (3) | 0.0672 (14) | |
H18A | 0.139 | 0.2152 | 0.1982 | 0.101* | |
H18B | 0.1518 | 0.2538 | 0.0975 | 0.101* | |
H18C | 0.299 | 0.2318 | 0.1797 | 0.101* | |
C19 | 0.2441 (4) | −0.04446 (15) | −0.1407 (2) | 0.0278 (7) | |
H19A | 0.3005 | −0.0706 | −0.0815 | 0.033* | |
H19B | 0.1625 | −0.0745 | −0.1774 | 0.033* | |
C20 | 0.3479 (4) | −0.03028 (19) | −0.2099 (2) | 0.0319 (7) | |
H20A | 0.2944 | −0.0021 | −0.2677 | 0.038* | |
H20B | 0.4342 | −0.0033 | −0.1723 | 0.038* | |
C21 | 0.4034 (4) | −0.09568 (17) | −0.2492 (3) | 0.0371 (8) | |
H21A | 0.3175 | −0.122 | −0.2888 | 0.044* | |
H21B | 0.4542 | −0.1246 | −0.1914 | 0.044* | |
C22 | 0.5103 (4) | −0.0809 (2) | −0.3149 (3) | 0.0497 (10) | |
H22A | 0.5432 | −0.1243 | −0.3385 | 0.075* | |
H22B | 0.5966 | −0.0556 | −0.2755 | 0.075* | |
H22C | 0.4599 | −0.053 | −0.3729 | 0.075* | |
C23 | 0.0899 (4) | 0.08302 (16) | −0.2067 (2) | 0.0283 (7) | |
H23A | 0.0405 | 0.124 | −0.1869 | 0.034* | |
H23B | 0.1748 | 0.0994 | −0.2321 | 0.034* | |
C24 | −0.0199 (4) | 0.04668 (17) | −0.2924 (2) | 0.0333 (8) | |
H24A | 0.0286 | 0.0059 | −0.3137 | 0.04* | |
H24B | −0.1061 | 0.0305 | −0.2682 | 0.04* | |
C25 | −0.0734 (5) | 0.0940 (2) | −0.3816 (3) | 0.0507 (10) | |
H25A | −0.1147 | 0.1362 | −0.3584 | 0.061* | |
H25B | 0.013 | 0.1079 | −0.4075 | 0.061* | |
C26 | −0.1896 (5) | 0.0629 (2) | −0.4668 (3) | 0.0650 (12) | |
H26A | −0.2185 | 0.0966 | −0.5215 | 0.098* | |
H26B | −0.2769 | 0.0502 | −0.4426 | 0.098* | |
H26C | −0.1491 | 0.0218 | −0.4918 | 0.098* | |
N1 | −0.7591 (3) | 0.25035 (14) | −0.3214 (2) | 0.0336 (7) | |
H1A | −0.8049 | 0.2856 | −0.3021 | 0.04* | |
P1 | 0.16139 (9) | 0.03072 (5) | −0.09511 (6) | 0.02533 (19) | |
Pt1 | 0 | 0 | 0 | 0.02389 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.034 (2) | 0.074 (3) | 0.034 (2) | 0.011 (2) | 0.0037 (17) | 0.0149 (19) |
C2 | 0.033 (2) | 0.055 (2) | 0.046 (2) | 0.0192 (18) | 0.0154 (18) | 0.0157 (18) |
C3 | 0.0259 (19) | 0.0358 (19) | 0.0375 (19) | 0.0058 (15) | 0.0141 (16) | 0.0086 (15) |
C4 | 0.0228 (18) | 0.0307 (17) | 0.0322 (18) | 0.0022 (14) | 0.0117 (15) | 0.0055 (14) |
C5 | 0.031 (2) | 0.045 (2) | 0.038 (2) | 0.0060 (16) | 0.0135 (17) | 0.0011 (16) |
C6 | 0.037 (2) | 0.063 (3) | 0.035 (2) | 0.005 (2) | 0.0087 (18) | −0.0016 (18) |
C7 | 0.0235 (18) | 0.0253 (17) | 0.0337 (18) | 0.0048 (14) | 0.0132 (15) | 0.0081 (14) |
C8 | 0.033 (2) | 0.0269 (17) | 0.0342 (19) | 0.0013 (15) | 0.0181 (16) | 0.0000 (14) |
C9 | 0.031 (2) | 0.0305 (18) | 0.0275 (17) | −0.0075 (15) | 0.0104 (15) | 0.0005 (14) |
C10 | 0.0216 (18) | 0.0267 (17) | 0.0332 (18) | −0.0030 (14) | 0.0137 (15) | 0.0064 (14) |
C11 | 0.0224 (18) | 0.0226 (16) | 0.0310 (18) | 0.0005 (13) | 0.0144 (15) | 0.0023 (13) |
C12 | 0.0215 (18) | 0.0257 (16) | 0.0297 (17) | −0.0009 (13) | 0.0118 (14) | 0.0052 (13) |
C13 | 0.0231 (19) | 0.0319 (18) | 0.0282 (17) | −0.0034 (15) | 0.0114 (15) | 0.0057 (14) |
C14 | 0.0260 (19) | 0.0338 (18) | 0.0275 (17) | −0.0059 (15) | 0.0124 (15) | 0.0023 (14) |
C15 | 0.0191 (18) | 0.0376 (19) | 0.0351 (18) | −0.0028 (14) | 0.0078 (15) | 0.0057 (15) |
C16 | 0.034 (2) | 0.0377 (19) | 0.0315 (19) | −0.0022 (16) | 0.0050 (16) | 0.0011 (15) |
C17 | 0.040 (2) | 0.050 (2) | 0.040 (2) | −0.0012 (18) | 0.0136 (18) | −0.0040 (17) |
C18 | 0.112 (4) | 0.054 (3) | 0.043 (2) | 0.009 (3) | 0.036 (3) | −0.006 (2) |
C19 | 0.0244 (19) | 0.0306 (19) | 0.0323 (18) | 0.0010 (14) | 0.0144 (15) | 0.0044 (14) |
C20 | 0.0264 (19) | 0.0387 (18) | 0.0328 (18) | 0.0046 (16) | 0.0119 (15) | 0.0058 (16) |
C21 | 0.032 (2) | 0.044 (2) | 0.037 (2) | 0.0052 (16) | 0.0118 (17) | 0.0017 (16) |
C22 | 0.046 (3) | 0.064 (3) | 0.045 (2) | 0.012 (2) | 0.024 (2) | 0.000 (2) |
C23 | 0.0248 (19) | 0.0322 (18) | 0.0297 (17) | 0.0006 (14) | 0.0101 (15) | 0.0075 (14) |
C24 | 0.027 (2) | 0.041 (2) | 0.0347 (19) | 0.0006 (15) | 0.0129 (16) | 0.0026 (15) |
C25 | 0.050 (3) | 0.050 (2) | 0.043 (2) | 0.002 (2) | −0.005 (2) | 0.0085 (18) |
C26 | 0.060 (3) | 0.079 (3) | 0.046 (2) | −0.002 (2) | −0.006 (2) | 0.010 (2) |
N1 | 0.0332 (17) | 0.0329 (15) | 0.0386 (17) | 0.0138 (13) | 0.0162 (14) | 0.0040 (13) |
P1 | 0.0195 (4) | 0.0297 (4) | 0.0283 (4) | −0.0002 (4) | 0.0089 (4) | 0.0053 (4) |
Pt1 | 0.01673 (11) | 0.03025 (12) | 0.02588 (12) | 0.00045 (8) | 0.00753 (7) | 0.00580 (8) |
C1—C2 | 1.369 (5) | C17—H17B | 0.99 |
C1—C6 | 1.398 (5) | C18—H18A | 0.98 |
C1—H1 | 0.95 | C18—H18B | 0.98 |
C2—C3 | 1.388 (5) | C18—H18C | 0.98 |
C2—H2 | 0.95 | C19—C20 | 1.534 (4) |
C3—N1 | 1.383 (4) | C19—P1 | 1.830 (3) |
C3—C4 | 1.408 (4) | C19—H19A | 0.99 |
C4—C5 | 1.393 (4) | C19—H19B | 0.99 |
C4—C12 | 1.453 (4) | C20—C21 | 1.519 (5) |
C5—C6 | 1.384 (5) | C20—H20A | 0.99 |
C5—H5 | 0.95 | C20—H20B | 0.99 |
C6—H6 | 0.95 | C21—C22 | 1.522 (5) |
C7—N1 | 1.381 (4) | C21—H21A | 0.99 |
C7—C8 | 1.391 (4) | C21—H21B | 0.99 |
C7—C12 | 1.414 (4) | C22—H22A | 0.98 |
C8—C9 | 1.376 (4) | C22—H22B | 0.98 |
C8—H8 | 0.95 | C22—H22C | 0.98 |
C9—C10 | 1.414 (4) | C23—C24 | 1.525 (4) |
C9—H9 | 0.95 | C23—P1 | 1.819 (3) |
C10—C11 | 1.393 (4) | C23—H23A | 0.99 |
C10—C13 | 1.447 (4) | C23—H23B | 0.99 |
C11—C12 | 1.393 (4) | C24—C25 | 1.513 (4) |
C11—H11 | 0.95 | C24—H24A | 0.99 |
C13—C14 | 1.199 (4) | C24—H24B | 0.99 |
C14—Pt1 | 2.013 (3) | C25—C26 | 1.508 (5) |
C15—C16 | 1.541 (4) | C25—H25A | 0.99 |
C15—P1 | 1.825 (3) | C25—H25B | 0.99 |
C15—H15A | 0.99 | C26—H26A | 0.98 |
C15—H15B | 0.99 | C26—H26B | 0.98 |
C16—C17 | 1.516 (5) | C26—H26C | 0.98 |
C16—H16A | 0.99 | N1—H1A | 0.88 |
C16—H16B | 0.99 | P1—Pt1 | 2.2935 (8) |
C17—C18 | 1.514 (5) | Pt1—C14i | 2.013 (3) |
C17—H17A | 0.99 | Pt1—P1i | 2.2935 (8) |
C2—C1—C6 | 121.9 (3) | C20—C19—H19A | 108.1 |
C2—C1—H1 | 119.1 | P1—C19—H19A | 108.1 |
C6—C1—H1 | 119.1 | C20—C19—H19B | 108.1 |
C1—C2—C3 | 117.7 (3) | P1—C19—H19B | 108.1 |
C1—C2—H2 | 121.2 | H19A—C19—H19B | 107.3 |
C3—C2—H2 | 121.2 | C21—C20—C19 | 112.8 (3) |
N1—C3—C2 | 129.7 (3) | C21—C20—H20A | 109 |
N1—C3—C4 | 108.5 (3) | C19—C20—H20A | 109 |
C2—C3—C4 | 121.8 (3) | C21—C20—H20B | 109 |
C5—C4—C3 | 119.3 (3) | C19—C20—H20B | 109 |
C5—C4—C12 | 133.8 (3) | H20A—C20—H20B | 107.8 |
C3—C4—C12 | 106.9 (3) | C20—C21—C22 | 112.2 (3) |
C6—C5—C4 | 118.9 (3) | C20—C21—H21A | 109.2 |
C6—C5—H5 | 120.5 | C22—C21—H21A | 109.2 |
C4—C5—H5 | 120.5 | C20—C21—H21B | 109.2 |
C5—C6—C1 | 120.4 (3) | C22—C21—H21B | 109.2 |
C5—C6—H6 | 119.8 | H21A—C21—H21B | 107.9 |
C1—C6—H6 | 119.8 | C21—C22—H22A | 109.5 |
N1—C7—C8 | 129.8 (3) | C21—C22—H22B | 109.5 |
N1—C7—C12 | 108.7 (3) | H22A—C22—H22B | 109.5 |
C8—C7—C12 | 121.5 (3) | C21—C22—H22C | 109.5 |
C9—C8—C7 | 117.6 (3) | H22A—C22—H22C | 109.5 |
C9—C8—H8 | 121.2 | H22B—C22—H22C | 109.5 |
C7—C8—H8 | 121.2 | C24—C23—P1 | 115.1 (2) |
C8—C9—C10 | 123.0 (3) | C24—C23—H23A | 108.5 |
C8—C9—H9 | 118.5 | P1—C23—H23A | 108.5 |
C10—C9—H9 | 118.5 | C24—C23—H23B | 108.5 |
C11—C10—C9 | 118.3 (3) | P1—C23—H23B | 108.5 |
C11—C10—C13 | 122.4 (3) | H23A—C23—H23B | 107.5 |
C9—C10—C13 | 119.3 (3) | C25—C24—C23 | 111.4 (3) |
C10—C11—C12 | 120.2 (3) | C25—C24—H24A | 109.4 |
C10—C11—H11 | 119.9 | C23—C24—H24A | 109.4 |
C12—C11—H11 | 119.9 | C25—C24—H24B | 109.4 |
C11—C12—C7 | 119.4 (3) | C23—C24—H24B | 109.4 |
C11—C12—C4 | 134.3 (3) | H24A—C24—H24B | 108 |
C7—C12—C4 | 106.3 (3) | C26—C25—C24 | 114.3 (3) |
C14—C13—C10 | 176.7 (3) | C26—C25—H25A | 108.7 |
C13—C14—Pt1 | 177.5 (3) | C24—C25—H25A | 108.7 |
C16—C15—P1 | 115.4 (2) | C26—C25—H25B | 108.7 |
C16—C15—H15A | 108.4 | C24—C25—H25B | 108.7 |
P1—C15—H15A | 108.4 | H25A—C25—H25B | 107.6 |
C16—C15—H15B | 108.4 | C25—C26—H26A | 109.5 |
P1—C15—H15B | 108.4 | C25—C26—H26B | 109.5 |
H15A—C15—H15B | 107.5 | H26A—C26—H26B | 109.5 |
C17—C16—C15 | 115.8 (3) | C25—C26—H26C | 109.5 |
C17—C16—H16A | 108.3 | H26A—C26—H26C | 109.5 |
C15—C16—H16A | 108.3 | H26B—C26—H26C | 109.5 |
C17—C16—H16B | 108.3 | C7—N1—C3 | 109.5 (3) |
C15—C16—H16B | 108.3 | C7—N1—H1A | 125.2 |
H16A—C16—H16B | 107.4 | C3—N1—H1A | 125.2 |
C18—C17—C16 | 113.2 (3) | C23—P1—C15 | 104.23 (14) |
C18—C17—H17A | 108.9 | C23—P1—C19 | 104.85 (15) |
C16—C17—H17A | 108.9 | C15—P1—C19 | 104.61 (15) |
C18—C17—H17B | 108.9 | C23—P1—Pt1 | 117.91 (11) |
C16—C17—H17B | 108.9 | C15—P1—Pt1 | 112.13 (11) |
H17A—C17—H17B | 107.8 | C19—P1—Pt1 | 111.94 (10) |
C17—C18—H18A | 109.5 | C14i—Pt1—C14 | 180.0 (3) |
C17—C18—H18B | 109.5 | C14i—Pt1—P1 | 86.70 (8) |
H18A—C18—H18B | 109.5 | C14—Pt1—P1 | 93.30 (8) |
C17—C18—H18C | 109.5 | C14i—Pt1—P1i | 93.30 (8) |
H18A—C18—H18C | 109.5 | C14—Pt1—P1i | 86.70 (8) |
H18B—C18—H18C | 109.5 | P1—Pt1—P1i | 180.00 (5) |
C20—C19—P1 | 116.6 (2) | ||
C6—C1—C2—C3 | 0.4 (6) | P1—C15—C16—C17 | 68.8 (3) |
C1—C2—C3—N1 | 179.9 (3) | C15—C16—C17—C18 | 165.1 (3) |
C1—C2—C3—C4 | 0.3 (5) | P1—C19—C20—C21 | −176.4 (2) |
N1—C3—C4—C5 | 179.8 (3) | C19—C20—C21—C22 | −178.1 (3) |
C2—C3—C4—C5 | −0.5 (5) | P1—C23—C24—C25 | 179.9 (3) |
N1—C3—C4—C12 | −0.6 (3) | C23—C24—C25—C26 | −176.4 (3) |
C2—C3—C4—C12 | 179.0 (3) | C8—C7—N1—C3 | 178.6 (3) |
C3—C4—C5—C6 | 0.0 (5) | C12—C7—N1—C3 | −0.9 (3) |
C12—C4—C5—C6 | −179.4 (3) | C2—C3—N1—C7 | −178.7 (3) |
C4—C5—C6—C1 | 0.7 (5) | C4—C3—N1—C7 | 1.0 (3) |
C2—C1—C6—C5 | −0.9 (6) | C24—C23—P1—C15 | 166.1 (2) |
N1—C7—C8—C9 | 179.8 (3) | C24—C23—P1—C19 | 56.4 (3) |
C12—C7—C8—C9 | −0.8 (4) | C24—C23—P1—Pt1 | −68.9 (2) |
C7—C8—C9—C10 | −0.1 (5) | C16—C15—P1—C23 | 63.2 (3) |
C8—C9—C10—C11 | 1.0 (4) | C16—C15—P1—C19 | 173.0 (2) |
C8—C9—C10—C13 | −178.2 (3) | C16—C15—P1—Pt1 | −65.5 (2) |
C9—C10—C11—C12 | −1.0 (4) | C20—C19—P1—C23 | 47.9 (3) |
C13—C10—C11—C12 | 178.2 (3) | C20—C19—P1—C15 | −61.4 (3) |
C10—C11—C12—C7 | 0.1 (4) | C20—C19—P1—Pt1 | 176.9 (2) |
C10—C11—C12—C4 | 180.0 (3) | C13—C14—Pt1—C14i | 92 (72) |
N1—C7—C12—C11 | −179.7 (3) | C13—C14—Pt1—P1 | −170 (7) |
C8—C7—C12—C11 | 0.8 (4) | C13—C14—Pt1—P1i | 10 (7) |
N1—C7—C12—C4 | 0.5 (3) | C23—P1—Pt1—C14i | 174.09 (15) |
C8—C7—C12—C4 | −179.0 (3) | C15—P1—Pt1—C14i | −64.87 (14) |
C5—C4—C12—C11 | −0.3 (6) | C19—P1—Pt1—C14i | 52.35 (15) |
C3—C4—C12—C11 | −179.7 (3) | C23—P1—Pt1—C14 | −5.91 (15) |
C5—C4—C12—C7 | 179.6 (3) | C15—P1—Pt1—C14 | 115.13 (14) |
C3—C4—C12—C7 | 0.1 (3) | C19—P1—Pt1—C14 | −127.65 (15) |
C11—C10—C13—C14 | −153 (6) | C23—P1—Pt1—P1i | 85 (31) |
C9—C10—C13—C14 | 26 (6) | C15—P1—Pt1—P1i | −154 (31) |
C10—C13—C14—Pt1 | 31 (11) | C19—P1—Pt1—P1i | −36 (31) |
Symmetry code: (i) −x, −y, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C25—H25A···N1ii | 0.99 | 2.69 | 3.674 (5) | 171 |
Symmetry code: (ii) x+1/2, −y+1/2, z. |
Experimental details
Crystal data | |
Chemical formula | [Pt(C12H27P)2(C14H8N)2] |
Mr | 980.13 |
Crystal system, space group | Monoclinic, P21/a |
Temperature (K) | 150 |
a, b, c (Å) | 9.2860 (1), 19.4330 (3), 13.6980 (2) |
β (°) | 104.238 (1) |
V (Å3) | 2395.94 (6) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 3.03 |
Crystal size (mm) | 0.33 × 0.25 × 0.13 |
Data collection | |
Diffractometer | Bruker–Nonius KappaCCD |
Absorption correction | Multi-scan (SORTAV; Blessing, 1995) |
Tmin, Tmax | 0.538, 0.683 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 35095, 4221, 3270 |
Rint | 0.070 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.024, 0.062, 1.03 |
No. of reflections | 4221 |
No. of parameters | 260 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.70, −1.32 |
Computer programs: COLLECT (Nonius, 1997), HKL SCALEPACK (Otwinowski & Minor, 1997), HKL DENZO (Otwinowski & Minor, 1997) and SCALEPACK, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEP-3 for Windows (Farrugia, 1997), X-SEED (Barbour, 1999) and POV-RAY for Windows (Cason, 1999), WinGX publication routines (Farrugia, 1999).
C3—N1 | 1.383 (4) | C13—C14 | 1.199 (4) |
C3—C4 | 1.408 (4) | C14—Pt1 | 2.013 (3) |
C4—C12 | 1.453 (4) | C15—P1 | 1.825 (3) |
C7—N1 | 1.381 (4) | C19—P1 | 1.830 (3) |
C7—C12 | 1.414 (4) | C23—P1 | 1.819 (3) |
C10—C13 | 1.447 (4) | P1—Pt1 | 2.2935 (8) |
N1—C3—C4 | 108.5 (3) | C7—N1—C3 | 109.5 (3) |
C3—C4—C12 | 106.9 (3) | C23—P1—Pt1 | 117.91 (11) |
N1—C7—C12 | 108.7 (3) | C15—P1—Pt1 | 112.13 (11) |
C7—C12—C4 | 106.3 (3) | C19—P1—Pt1 | 111.94 (10) |
C14—C13—C10 | 176.7 (3) | C14—Pt1—P1 | 93.30 (8) |
C13—C14—Pt1 | 177.5 (3) | ||
N1—C3—C4—C12 | −0.6 (3) | C4—C3—N1—C7 | 1.0 (3) |
C8—C9—C10—C13 | −178.2 (3) | C13—C14—Pt1—P1 | −170 (7) |
N1—C7—C12—C4 | 0.5 (3) | C23—P1—Pt1—C14 | −5.91 (15) |
C3—C4—C12—C7 | 0.1 (3) | C15—P1—Pt1—C14 | 115.13 (14) |
C12—C7—N1—C3 | −0.9 (3) | C19—P1—Pt1—C14 | −127.65 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
C25—H25A···N1i | 0.99 | 2.69 | 3.674 (5) | 171 |
Symmetry code: (i) x+1/2, −y+1/2, z. |
In this paper, we report the structural characterization of the title compound, (I), which is a mononuclear platinum(II) di-yne species, trans-[Pt(PnBu3)2(—C≡CR)2] (R = carbazol-3-yl). Such platinum-containing species form the building blocks for rigid-rod organometallic poly-ynes of general formula trans-[Pt(PnBu3)2—C≡C—R—C≡C—]∞ (R = aromatic or heteroaromatic linker unit). Platinum(II) poly-ynes are of immense current interest due to π-electron conjugation along the backbone, donor–acceptor metal–ligand interactions and novel photophysical properties (Wittmann et al., 1994; Beljonne et al., 1996; Younus et al., 1998; Chawdhury et al., 1998, 1999; Khan et al., 2002, 2003). They possess interesting optoelectronic properties useful for application in light-emitting diodes and photocells (Wilson et al., 2000, 2001). Precursors to these species, such as the title compound, are studied as models of the molecular and electronic properties and structure-property relationships in the metal poly-ynes.
The structure of (I) exhibits a C—H···N close contact between alkynyl atom H25a and N1, with a C25···N1 distance of 3.674 (5) Å (Table 2).