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Acta Cryst. (2009). E65, m269    [ doi:10.1107/S1600536809004322 ]

trans-(2-Benzoylpyridine-[kappa]2N,O)dichlorido[2-(2-pyridylcarbonyl)phenyl-[kappa]2C1,N]iridium(III) dichloromethane solvate

M.-L. Hsueh and C.-H. Yang

Abstract top

The title compound, [Ir(C12H8NO)Cl2(C12H9NO)]·CH2Cl2, which was obtained from the reaction of iridium(III) chloride trihydrate and 2-benzoylpyridine, contains an IrIII atom coordinated by two N, one O, one C and two Cl atoms in trans positions, forming a distorted octahedral environment. The solvent molecule CH2Cl2 is disordered over two positions with an occupancy of 0.8:0.2.

Comment top

Several studies have been reported in cyclometallation of orthometallated ligands such as anionic ppy (ppyH is 2–phenylpyridine). For instance, Rh(Hbzpy)(bzpy)Cl2 (bzpy is 2–pyridyl–2–phenonide) was obtained from the reaction of rhodium (III) chloride trihydrate with 2–benzoylpyridine (Hbzpy) in 2–methoxyethanol for 4 d at room temperature (de Geest & Steel, 1995). The orthometallated complex which they reported had a five–membered N,O metallacycle containing the chelated Hbzpy ligand and a six–membered N,C metallacycle containing the chelated bzpy ligand, on the basis of NMR chemical–shift analysis. Moveover, the structural study of the orthometallated RhIII complex was reported in order to make sure the stereochemistry (Tseng et al., 2005). However, the synthesis and structural study of the according iridium complex was never reported. We report herein the synthesis and characterization studies of the title orthometallated IrIII complex, (I), containing 2–pyridyl phenone.

In the orthometallated title compound, the Ir atom is hexacoordinated by two equivalents of 2–benzoylpyridine, forming a pseudo–octahedral geometry, with two Cl ligands in a trans orientation. The pyridyl N atom of the Hbzpy ligand is trans to the N atom of the bzpy ligand, where one of the ligands is κ2–(N,C)–cyclometallated and the other is κ2–(N,O)–coordinated. Cyclometallation leads to a boat conformation, with atoms Ir and C18 above the N2—C17—C19—C24 plane (Fig. 1). The pyridyl ring of the Hbzpy ligand and the phenyl ring of the bzpy ligand are mutually stacked [C1—N1—C24—C23 = 48.8 (2)°] (Table 1). The five-membered chelate ring deviates slightly from planarity [N1—C5—C6—O1 = -10.9 (3)°] and is inclined to the phenyl plane [C5—C6—C7—C12 = -39.1 (4)°]. There are no short intermolecular contacts.

Related literature top

For the synthesis and structure of Rh(Hbzpy)(bzpy)Cl2 (bzpy = 2-pyridyl-2-phenonide), see: de Geest & Steel (1995). For related literature, see: Tseng et al. (2005).

Experimental top

All procedures involving Ir(III) species were carried out under nitrogen gas atomosphere. 2-Benzoylpyridine (10.0 mmol) and 0.4 equiv. of IrCl3.H2O (Next Chimica) were heated in a 3:1 mixture of 2-ethoxyethanol and water. This slurry was heated to 100 °C for 24 hours. After cooling to room temperature, the precipitate was filtered off and washed with deionized water, followed by 2 portions of n-hexane and ether. The orange–reddish single crystals were obtained from the solutions of dichlomathane and n-hexane mixture (1:1) in 43% yield.

Refinement top

All H atoms bonded to C atoms were placed in calculated positions, with C—H = 0.96 Å, and treated as riding atoms, with Uiso(H) = 1.2Ueq(C). The solvent molecule CH2Cl2 was refined as disordered with an 80/20 occupancy for the two molecules.

Computing details top

Data collection: SMART (Bruker, 2007); cell refinement: SMART (Bruker, 2007); data reduction: SAINT (Bruker, 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).

Figures top
[Figure 1] Fig. 1. A view of the molecular structure of the title compound with displacement ellipsoids shown at the 50% probability level.
trans-(2-Benzoylpyridine-κ2N,O)dichlorido[2- (2-pyridylcarbonyl)phenyl-κ2C1,N]iridium(III) dichloromethane solvate top
Crystal data top
[Ir(C12H8NO)Cl2(C12H9NO)]·CH2Cl2Z = 2
Mr = 713.42F(000) = 688
Triclinic, P1Dx = 1.930 Mg m−3
Hall symbol: -P 1Mo Kα radiation, λ = 0.71073 Å
a = 8.8694 (9) ÅCell parameters from 8499 reflections
b = 11.4600 (11) Åθ = 2.3–28.3°
c = 13.2604 (13) ŵ = 5.90 mm−1
α = 113.543 (2)°T = 294 K
β = 95.719 (2)°Equant, orange–red
γ = 90.641 (2)°0.13 × 0.13 × 0.08 mm
V = 1227.6 (2) Å3
Data collection top
Bruker SMART 1000 CCD area-detector
diffractometer		6075 independent reflections
Radiation source: fine-focus sealed tube5416 reflections with I > 2σ(I)
graphiteRint = 0.032
φ and ω scansθmax = 28.3°, θmin = 1.7°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)		h = −11→11
Tmin = 0.480, Tmax = 0.624k = −15→15
14570 measured reflectionsl = −17→17
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.020Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.044H-atom parameters constrained
S = 0.85 w = 1/[σ2(Fo2) + (0.025P)2]
where P = (Fo2 + 2Fc2)/3
6075 reflections(Δ/σ)max = 0.003
325 parametersΔρmax = 0.65 e Å−3
0 restraintsΔρmin = −0.52 e Å−3
Crystal data top
[Ir(C12H8NO)Cl2(C12H9NO)]·CH2Cl2γ = 90.641 (2)°
Mr = 713.42V = 1227.6 (2) Å3
Triclinic, P1Z = 2
a = 8.8694 (9) ÅMo Kα radiation
b = 11.4600 (11) ŵ = 5.90 mm−1
c = 13.2604 (13) ÅT = 294 K
α = 113.543 (2)°0.13 × 0.13 × 0.08 mm
β = 95.719 (2)°
Data collection top
Bruker SMART 1000 CCD area-detector
diffractometer		6075 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)		5416 reflections with I > 2σ(I)
Tmin = 0.480, Tmax = 0.624Rint = 0.032
14570 measured reflectionsθmax = 28.3°
Refinement top
R[F2 > 2σ(F2)] = 0.020H-atom parameters constrained
wR(F2) = 0.044Δρmax = 0.65 e Å−3
S = 0.85Δρmin = −0.52 e Å−3
6075 reflectionsAbsolute structure: ?
325 parametersFlack parameter: ?
0 restraintsRogers parameter: ?
Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/UeqOcc. (<1)
Ir10.792178 (11)0.696938 (8)0.230068 (7)0.03493 (4)
Cl11.05493 (7)0.69691 (6)0.22304 (5)0.04395 (14)
Cl20.53142 (8)0.69236 (7)0.24425 (7)0.05771 (18)
Cl30.3748 (3)1.1051 (3)0.34837 (18)0.1197 (8)0.80
Cl3'0.4493 (10)1.0756 (13)0.3508 (9)0.146 (5)0.20
Cl40.5216 (4)1.0079 (3)0.1454 (3)0.1488 (12)0.80
Cl4'0.5595 (8)1.0593 (7)0.1793 (8)0.0678 (17)0.20
O10.8137 (2)0.65126 (17)0.37670 (14)0.0475 (4)
O21.0387 (2)0.98256 (19)0.15186 (16)0.0568 (5)
N10.7869 (2)0.50192 (19)0.16390 (16)0.0380 (5)
N20.8146 (2)0.88896 (19)0.31697 (16)0.0363 (4)
C10.8068 (3)0.4270 (3)0.0594 (2)0.0477 (6)
H1A0.81740.46450.00970.057*
C20.8123 (4)0.2965 (3)0.0224 (2)0.0530 (7)
H2A0.82410.2471−0.05130.064*
C30.8004 (4)0.2402 (3)0.0952 (2)0.0555 (7)
H3A0.80330.15230.07170.067*
C40.7840 (3)0.3160 (2)0.2038 (2)0.0459 (6)
H4A0.77780.27970.25480.055*
C50.7767 (3)0.4459 (2)0.23675 (19)0.0366 (5)
C60.7796 (3)0.5377 (2)0.3539 (2)0.0378 (5)
C70.7543 (3)0.4988 (2)0.4445 (2)0.0373 (5)
C80.8372 (3)0.5651 (3)0.5475 (2)0.0481 (6)
H8A0.90690.63080.55680.058*
C90.8169 (3)0.5345 (3)0.6353 (2)0.0537 (7)
H9A0.87510.57750.70310.064*
C100.7108 (3)0.4405 (3)0.6233 (2)0.0551 (7)
H10A0.69690.42020.68310.066*
C110.6252 (3)0.3764 (3)0.5236 (3)0.0533 (7)
H11A0.55170.31430.51670.064*
C120.6468 (3)0.4032 (3)0.4328 (2)0.0450 (6)
H12A0.59020.35790.36480.054*
C130.7676 (3)0.9380 (3)0.4180 (2)0.0471 (6)
H13A0.70840.88590.43900.057*
C140.8026 (3)1.0616 (3)0.4918 (2)0.0537 (7)
H14A0.76601.09280.56060.064*
C150.8931 (3)1.1386 (3)0.4622 (2)0.0518 (7)
H15A0.92211.22170.51160.062*
C160.9394 (3)1.0901 (2)0.3583 (2)0.0451 (6)
H16A0.99941.14090.33640.054*
C170.8971 (3)0.9661 (2)0.28598 (19)0.0360 (5)
C180.9372 (3)0.9224 (2)0.1688 (2)0.0387 (5)
C190.8380 (3)0.8238 (2)0.07782 (19)0.0347 (5)
C200.8219 (3)0.8370 (3)−0.0232 (2)0.0449 (6)
H20A0.87990.8999−0.03170.054*
C210.7218 (4)0.7582 (3)−0.1096 (2)0.0538 (7)
H21A0.71060.7677−0.17630.065*
C220.6371 (3)0.6638 (3)−0.0963 (2)0.0558 (7)
H22A0.56850.6099−0.15460.067*
C230.6534 (3)0.6491 (3)0.0025 (2)0.0465 (6)
H23A0.59440.58600.00990.056*
C240.7564 (3)0.7267 (2)0.09154 (19)0.0353 (5)
C250.4019 (5)0.9802 (4)0.2225 (4)0.1002 (15)
H25A0.30500.95350.17870.120*
H25B0.43730.90950.23790.120*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Ir10.04842 (6)0.02687 (5)0.03220 (5)−0.00222 (4)0.01063 (4)0.01344 (4)
Cl10.0475 (3)0.0455 (4)0.0425 (3)0.0045 (3)0.0056 (3)0.0214 (3)
Cl20.0544 (4)0.0489 (4)0.0736 (5)−0.0046 (3)0.0270 (4)0.0242 (4)
Cl30.1304 (19)0.152 (2)0.0675 (10)−0.0255 (16)0.0092 (13)0.0358 (11)
Cl3'0.109 (7)0.167 (8)0.096 (5)0.037 (6)−0.024 (5)−0.007 (5)
Cl40.149 (3)0.167 (3)0.169 (3)0.087 (2)0.083 (2)0.091 (3)
Cl4'0.044 (2)0.061 (3)0.109 (5)0.009 (2)0.018 (2)0.041 (3)
O10.0776 (13)0.0303 (9)0.0373 (9)−0.0051 (9)0.0133 (9)0.0151 (7)
O20.0651 (12)0.0562 (13)0.0538 (11)−0.0219 (10)0.0086 (10)0.0273 (10)
N10.0512 (12)0.0299 (11)0.0350 (10)−0.0028 (9)0.0117 (9)0.0137 (8)
N20.0469 (12)0.0308 (11)0.0324 (10)0.0003 (9)0.0086 (9)0.0130 (8)
C10.0682 (18)0.0369 (15)0.0391 (14)0.0024 (13)0.0185 (13)0.0138 (11)
C20.075 (2)0.0367 (15)0.0416 (15)0.0030 (14)0.0187 (14)0.0066 (12)
C30.080 (2)0.0307 (14)0.0547 (17)0.0071 (14)0.0191 (15)0.0129 (12)
C40.0611 (17)0.0328 (14)0.0483 (15)0.0044 (12)0.0143 (13)0.0191 (11)
C50.0454 (13)0.0298 (12)0.0375 (12)−0.0006 (10)0.0092 (10)0.0158 (10)
C60.0463 (14)0.0319 (13)0.0381 (13)0.0002 (10)0.0101 (11)0.0162 (10)
C70.0463 (14)0.0343 (13)0.0386 (13)0.0057 (10)0.0126 (11)0.0206 (10)
C80.0560 (17)0.0466 (16)0.0422 (14)−0.0025 (13)0.0112 (12)0.0172 (12)
C90.0562 (17)0.067 (2)0.0419 (15)0.0082 (15)0.0104 (13)0.0252 (14)
C100.0626 (18)0.069 (2)0.0555 (17)0.0187 (15)0.0243 (14)0.0431 (16)
C110.0570 (17)0.0520 (18)0.0675 (19)0.0052 (14)0.0209 (15)0.0382 (15)
C120.0485 (15)0.0426 (15)0.0497 (15)−0.0014 (12)0.0089 (12)0.0240 (12)
C130.0620 (17)0.0388 (15)0.0414 (14)0.0015 (12)0.0155 (12)0.0150 (11)
C140.0711 (19)0.0451 (17)0.0376 (14)0.0057 (14)0.0140 (13)0.0074 (12)
C150.0624 (18)0.0326 (14)0.0482 (16)0.0008 (13)−0.0004 (13)0.0050 (12)
C160.0512 (15)0.0324 (14)0.0494 (15)−0.0036 (11)0.0021 (12)0.0151 (11)
C170.0417 (13)0.0304 (12)0.0381 (12)0.0000 (10)0.0025 (10)0.0166 (10)
C180.0445 (14)0.0340 (13)0.0442 (13)−0.0014 (10)0.0060 (11)0.0225 (11)
C190.0396 (13)0.0317 (12)0.0363 (12)0.0013 (10)0.0060 (10)0.0170 (10)
C200.0576 (16)0.0434 (15)0.0423 (14)0.0062 (12)0.0117 (12)0.0248 (12)
C210.072 (2)0.0552 (18)0.0359 (14)0.0118 (15)0.0021 (13)0.0203 (13)
C220.0597 (18)0.0560 (18)0.0416 (15)0.0008 (14)−0.0089 (13)0.0125 (13)
C230.0472 (15)0.0422 (15)0.0481 (15)−0.0083 (12)−0.0005 (12)0.0176 (12)
C240.0386 (12)0.0334 (13)0.0350 (12)0.0005 (10)0.0074 (10)0.0142 (10)
C250.087 (3)0.069 (3)0.137 (4)−0.010 (2)−0.016 (3)0.040 (3)
Geometric parameters (Å, °) top
Ir1—C241.995 (2)C8—H8A0.9300
Ir1—N22.032 (2)C9—C101.372 (4)
Ir1—N12.047 (2)C9—H9A0.9300
Ir1—O12.1983 (17)C10—C111.370 (4)
Ir1—Cl22.3407 (8)C10—H10A0.9300
Ir1—Cl12.3416 (7)C11—C121.386 (4)
Cl3—C251.753 (5)C11—H11A0.9300
Cl3'—C251.621 (12)C12—H12A0.9300
Cl3'—Cl4'2.504 (17)C13—C141.372 (4)
Cl4—C251.656 (5)C13—H13A0.9300
Cl4'—C251.911 (9)C14—C151.379 (4)
O1—C61.239 (3)C14—H14A0.9300
O2—C181.220 (3)C15—C161.372 (4)
N1—C11.338 (3)C15—H15A0.9300
N1—C51.366 (3)C16—C171.381 (3)
N2—C171.349 (3)C16—H16A0.9300
N2—C131.342 (3)C17—C181.511 (3)
C1—C21.379 (4)C18—C191.478 (3)
C1—H1A0.9300C19—C241.402 (3)
C2—C31.370 (4)C19—C201.401 (3)
C2—H2A0.9300C20—C211.367 (4)
C3—C41.376 (4)C20—H20A0.9300
C3—H3A0.9300C21—C221.388 (4)
C4—C51.377 (3)C21—H21A0.9300
C4—H4A0.9300C22—C231.380 (4)
C5—C61.485 (3)C22—H22A0.9300
C6—C71.473 (3)C23—C241.395 (3)
C7—C81.394 (3)C23—H23A0.9300
C7—C121.395 (3)C25—H25A0.9600
C8—C91.370 (4)C25—H25B0.9600
C24—Ir1—N288.46 (9)C12—C11—H11A119.7
C24—Ir1—N199.89 (9)C7—C12—C11119.4 (3)
N2—Ir1—N1171.15 (7)C7—C12—H12A120.3
C24—Ir1—O1174.73 (8)C11—C12—H12A120.3
N2—Ir1—O195.21 (7)N2—C13—C14123.1 (3)
N1—Ir1—O176.67 (7)N2—C13—H13A118.5
C24—Ir1—Cl291.26 (7)C14—C13—H13A118.5
N2—Ir1—Cl292.19 (6)C13—C14—C15118.8 (3)
N1—Ir1—Cl290.59 (6)C13—C14—H14A120.6
O1—Ir1—Cl284.84 (6)C15—C14—H14A120.6
C24—Ir1—Cl191.73 (7)C16—C15—C14118.6 (2)
N2—Ir1—Cl188.61 (6)C16—C15—H15A120.7
N1—Ir1—Cl188.19 (6)C14—C15—H15A120.7
O1—Ir1—Cl192.14 (6)C15—C16—C17120.2 (3)
Cl2—Ir1—Cl1176.93 (2)C15—C16—H16A119.9
C25—Cl3'—Cl4'49.7 (4)C17—C16—H16A119.9
C25—Cl4'—Cl3'40.4 (4)N2—C17—C16121.1 (2)
C6—O1—Ir1112.63 (15)N2—C17—C18121.0 (2)
C1—N1—C5117.9 (2)C16—C17—C18117.8 (2)
C1—N1—Ir1125.79 (17)O2—C18—C19122.3 (2)
C5—N1—Ir1115.96 (16)O2—C18—C17117.7 (2)
C17—N2—C13118.2 (2)C19—C18—C17119.3 (2)
C17—N2—Ir1122.56 (17)C24—C19—C20120.9 (2)
C13—N2—Ir1118.29 (17)C24—C19—C18123.0 (2)
N1—C1—C2122.7 (2)C20—C19—C18115.9 (2)
N1—C1—H1A118.7C21—C20—C19120.6 (3)
C2—C1—H1A118.7C21—C20—H20A119.7
C1—C2—C3119.3 (3)C19—C20—H20A119.7
C1—C2—H2A120.4C20—C21—C22119.1 (3)
C3—C2—H2A120.4C20—C21—H21A120.5
C4—C3—C2118.9 (3)C22—C21—H21A120.5
C4—C3—H3A120.6C23—C22—C21120.7 (2)
C2—C3—H3A120.6C23—C22—H22A119.6
C5—C4—C3119.8 (2)C21—C22—H22A119.6
C5—C4—H4A120.1C22—C23—C24121.5 (2)
C3—C4—H4A120.1C22—C23—H23A119.2
N1—C5—C4121.3 (2)C24—C23—H23A119.2
N1—C5—C6114.1 (2)C23—C24—C19117.0 (2)
C4—C5—C6124.1 (2)C23—C24—Ir1121.60 (18)
O1—C6—C7118.8 (2)C19—C24—Ir1121.33 (17)
O1—C6—C5117.9 (2)Cl4—C25—Cl3'108.8 (5)
C7—C6—C5123.2 (2)Cl4—C25—Cl3117.7 (3)
C8—C7—C12118.9 (2)Cl3'—C25—Cl325.3 (3)
C8—C7—C6118.1 (2)Cl4—C25—Cl4'19.2 (3)
C12—C7—C6123.0 (2)Cl3'—C25—Cl4'89.9 (6)
C9—C8—C7120.7 (3)Cl3—C25—Cl4'99.2 (3)
C9—C8—H8A119.7Cl4—C25—H25A107.8
C7—C8—H8A119.7Cl3'—C25—H25A132.0
C10—C9—C8120.0 (3)Cl3—C25—H25A108.1
C10—C9—H9A120.0Cl4'—C25—H25A121.6
C8—C9—H9A120.0Cl4—C25—H25B107.2
C11—C10—C9120.3 (3)Cl3'—C25—H25B90.2
C11—C10—H10A119.9Cl3—C25—H25B108.2
C9—C10—H10A119.9Cl4'—C25—H25B111.5
C10—C11—C12120.7 (3)H25A—C25—H25B107.4
C10—C11—H11A119.7
Table 1
Selected geometric parameters (Å, °) top
Ir1—C241.995 (2)Ir1—Cl22.3407 (8)
Ir1—N22.032 (2)Ir1—Cl12.3416 (7)
Ir1—N12.047 (2)O1—C61.239 (3)
Ir1—O12.1983 (17)O2—C181.220 (3)
C24—Ir1—N288.46 (9)N1—Ir1—Cl290.59 (6)
C24—Ir1—N199.89 (9)O1—Ir1—Cl284.84 (6)
N2—Ir1—N1171.15 (7)C24—Ir1—Cl191.73 (7)
C24—Ir1—O1174.73 (8)N2—Ir1—Cl188.61 (6)
N2—Ir1—O195.21 (7)N1—Ir1—Cl188.19 (6)
N1—Ir1—O176.67 (7)O1—Ir1—Cl192.14 (6)
C24—Ir1—Cl291.26 (7)Cl2—Ir1—Cl1176.93 (2)
N2—Ir1—Cl292.19 (6)
Acknowledgements top

Financial support from the Ministry of Economic Affairs, Taiwan, is acknowledged.

references
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