Home Crystal structure of poly-[(μ2-((1,3-bis(benzimidazol-1-yl)propane-κ2N:N′)(μ2-4-tert-butyl-phthalato-κ2O:O′)cobalt(II)] monohydrate, C29H30CoN4O5
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Crystal structure of poly-[(μ2-((1,3-bis(benzimidazol-1-yl)propane-κ2N:N′)(μ2-4-tert-butyl-phthalato-κ2O:O′)cobalt(II)] monohydrate, C29H30CoN4O5

  • Min-Le Han EMAIL logo , San-Tai Wang and Zhe Zhou
Published/Copyright: March 17, 2017

Abstract

C6H25Br3N2O3P2, orthorhombic, Pbca (no. 61), a =11.6532(10) Å, b = 20.1493(18) Å, c = 22.609(2) Å, V = 5308.8(8) Å3, Z = 8, Rgt(F) = 0.0363, wRref(F2) = 0.0909, T = 296(2) K.

CCDC no.:: 1533014

The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.

Table 1

Data collection and handling.

Crystal:Pink block
Size:0.25 × 0.18 × 0.17 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:6.9 cm−1
Diffractometer, scan mode:Bruker SMART, φ and ω
2θmax, completeness:51°, >99%
N(hkl)measured, N(hkl)unique, Rint:35939, 4947, 0.063
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 3576
N(param)refined:359
Programs:Bruker programs [13], SHELX [14]
Table 2

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
O5a0.4470(7)0.0077(2)0.3949(2)0.218(4)
H5Aa0.44640.04970.41710.327*
H5Ba0.50980.00840.36590.327*
O5Ab0.571(3)0.0500(11)0.3866(11)0.218(4)
H5AAb0.52860.08960.39990.327*
H5ABb0.52480.01570.36680.327*
Co10.23375(3)0.14131(2)0.54850(2)0.02773(11)
O10.60264(15)0.32468(9)0.40809(8)0.0410(5)
O20.53466(17)0.25432(10)0.47429(8)0.0493(5)
O30.28390(15)0.18921(9)0.47700(8)0.0398(5)
O40.41940(17)0.11380(9)0.46152(8)0.0439(5)
N10.20767(16)0.04182(10)0.54226(9)0.0305(5)
N20.24381(17)−0.06215(10)0.51510(9)0.0340(5)
N30.62835(17)−0.15062(10)0.39822(9)0.0303(5)
N40.44259(16)−0.16876(10)0.38112(9)0.0297(5)
C10.45826(19)0.25029(12)0.37726(11)0.0265(5)
C20.38634(19)0.19574(12)0.38715(10)0.0260(5)
C30.3260(2)0.16842(12)0.34020(11)0.0287(6)
H30.28120.13100.34710.034*
C40.3296(2)0.19461(12)0.28306(10)0.0292(6)
C50.3955(2)0.25124(13)0.27508(11)0.0346(6)
H50.39640.27190.23830.042*
C60.4600(2)0.27755(12)0.32085(11)0.0336(6)
H60.50570.31450.31360.040*
C70.5360(2)0.27765(12)0.42421(12)0.0287(6)
C80.3660(2)0.16417(13)0.44687(11)0.0306(6)
C90.2651(2)0.16011(13)0.23268(12)0.0373(6)
C100.2647(3)0.20145(17)0.17603(13)0.0597(9)
H10A0.23120.24410.18390.090*
H10B0.22070.17900.14620.090*
H10C0.34210.20730.16240.090*
C110.1401(2)0.14732(17)0.25102(14)0.0563(9)
H11A0.13860.11720.28390.085*
H11B0.09900.12840.21840.085*
H11C0.10480.18850.26230.085*
C120.3239(3)0.09367(15)0.21974(14)0.0556(8)
H12A0.40130.10150.20690.083*
H12B0.28260.07070.18930.083*
H12C0.32490.06710.25500.083*
C130.2810(2)0.00059(13)0.51701(11)0.0351(6)
H130.35170.01390.50200.042*
C140.1143(2)0.00231(12)0.55840(10)0.0287(6)
C150.0121(2)0.01827(14)0.58657(11)0.0355(6)
H15−0.00360.06140.59870.043*
C16−0.0651(2)−0.03245(16)0.59586(12)0.0442(7)
H16−0.1342−0.02310.61460.053*
C17−0.0426(2)−0.09739(15)0.57793(13)0.0461(7)
H17−0.0973−0.13010.58480.055*
C180.0585(2)−0.11428(14)0.55030(12)0.0397(7)
H180.0737−0.15750.53830.048*
C190.1364(2)−0.06311(13)0.54141(11)0.0311(6)
C200.3038(2)−0.11782(14)0.48707(12)0.0404(7)
H20A0.2938−0.15730.51100.048*
H20B0.3852−0.10810.48530.048*
C210.2595(2)−0.13113(14)0.42503(12)0.0385(6)
H21A0.2667−0.09100.40160.046*
H21B0.1787−0.14240.42710.046*
C220.3239(2)−0.18713(13)0.39434(12)0.0368(6)
H22A0.3234−0.22610.41950.044*
H22B0.2848−0.19840.35780.044*
C230.5333(2)−0.17984(12)0.41647(11)0.0303(6)
H230.5295−0.20560.45050.036*
C240.5975(2)−0.11724(12)0.34655(11)0.0301(6)
C250.6615(2)−0.07793(14)0.30883(12)0.0417(7)
H250.7390−0.07010.31570.050*
C260.6060(3)−0.05088(15)0.26073(13)0.0508(8)
H260.6471−0.02440.23450.061*
C270.4899(3)−0.06229(15)0.25041(13)0.0500(8)
H270.4554−0.04300.21750.060*
C280.4249(2)−0.10095(14)0.28717(12)0.0408(7)
H280.3474−0.10840.28010.049*
C290.4807(2)−0.12853(12)0.33554(11)0.0303(6)
  1. aOccupancy: 0.815(6); bOccupancy: 0.185(6).

Source of material

A mixture of 4-tert-butyl-phthalic anhydride (40.6 mg, 0.2 mmol), Co(OAc)2⋅2H2O (24 mg, 0.1 mmol), 1,3-bis(benzimidazol-1-yl)propane (27.6 mg, 0.1 mmol), and KOH (5.6 mg, 0.1 mmol) were added to water (10 mL) in a 25 mL Teflon-lined autoclave. The mixture was heated at 413 K for 3 days and then slowly cooled down to room temperature. Pink block-shaped crystals of the title compound were obtained.

Experimental details

Carbon-bound H atoms were placed in calculated positions and were included in the refinement in the riding model approximation, with Uiso(H) set to 1.2Ueq(C). The H atoms of the methyl group were allowed to rotate with a fixed angle around the C—C bond to best fit the experimental electron density, with Uiso(H) set to 1.5Ueq(C). The water molecule is splitted over two positions.

Discussion

In the last decades, the design and construction of Co(II)-based metal-organic frameworks is of interest in the field of molecular magnetism and materials chemistry due to their fascinating structural diversities and potential application as functional materials [1], [2], [3], [4], [5]. Phthalic acid (benzene-1,2-dicarboxylic acid) and its derivatives have been used to construct coordination polymers [6], [7]. We have explored the structural transformation mediated by 4-R-phthalic acid (R = −C(CH3)3 or −CH3) and N-donor ligands [8]. Among diimine-type N-donor co-ligands, 1,3-bis(benzimidazol-1-yl)propane (bbip) is a flexible ligand, with the potential to serve as bridging ligand, which are employed to construct new CPs [9], [10], [11]. It is also employed to assemble supramolecular architectures via π-π-aromatic interactions with other organic ligands [12].

There is one Co(II) ion, one tbph ligand, one bbip ligand, and one free water molecule in the asymmetric unit of the title complex. Co1 is four-coordinated with a distorted tetrahedral geometry by two O atoms from two tbph ligands and two N atoms from two bbip ligands. The Co—O bond lengths are 1.9423(19) and 1.973(2) Å, and the Co—N ones are 2.017(2) and 2.033(2) Å, respectively. The Co1 ions are linked by tbph to form an infinite chain. Such chains are further joined by bbip in double-bridge fashion to generate a two-dimensional (6,3) brick-wall layer. In this layer, π-π stacking interactions are evident between aryl rings of bbip with a co-facial distance of 3.74 Å. The water molecules are located in voids of the layer, fixed by hydrogen-bonding interactions between water and carboxylic oxygen atoms (O(5)⋯O(4) 2.634(5) Å, O(5)—H(1W)⋯O(4) 164.0°). An extended three-dimensional network of hydrogen bonds contributes to the stability of the structure.

References

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Received: 2016-8-18
Accepted: 2017-2-16
Published Online: 2017-3-17
Published in Print: 2017-5-24

©2017 Min-Le Han et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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