Home Crystal structure of cis-bis(2,2′-bipyridine-κ2N,N′)bis(thiocyanato-κN)nickel(II), C22H16N6NiS2
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Crystal structure of cis-bis(2,2′-bipyridine-κ2N,N′)bis(thiocyanato-κN)nickel(II), C22H16N6NiS2

  • Kwang Ha EMAIL logo
Published/Copyright: November 1, 2016

Abstract

C22H16N6NiS2, triclinic, P1̅ (no. 2), a = 7.2925(4) Å, b = 8.9214(5) Å, c = 17.7808(9) Å, α = 90.484(3)°, β = 98.965(3)°, γ = 113.003(3)°, V = 1048.75(10) Å3, Z = 2, Rgt(F) = 0.0480, wRref(F2) = 0.0824, T = 223(2) K.

CCDC no.:: 1509335

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

Table 1:

Data collection and handling.

Crystal:Yellow block
Size:0.15 × 0.11 × 0.07 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:11.5 cm−1
Diffractometer, scan mode:PHOTON 100 CMOS, φ and ω
2θmax, completeness:56.8°, >99%
N(hkl)measured, N(hkl)unique, Rint:44350, 5245, 0.138
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 3401
N(param)refined:280
Programs:Bruker programs [2], SHELX [3], ORTEP-3 [4], PLATON [5]
Table 2:

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

AtomxyzUiso*/Ueq
Ni10.23982(5)1.02386(4)0.24834(2)0.02359(10)
S10.76298(13)1.41390(10)0.12972(5)0.0457(2)
S20.59215(13)1.24379(12)0.48134(5)0.0515(3)
N10.2877(3)0.8421(3)0.19192(12)0.0234(5)
N20.0222(3)0.9702(3)0.14926(12)0.0250(5)
N30.0206(3)0.8678(3)0.30687(12)0.0246(5)
N40.1586(3)1.1878(3)0.30336(12)0.0265(5)
N50.4464(4)1.1986(3)0.19470(14)0.0354(6)
N60.4582(4)1.0539(3)0.34314(14)0.0352(6)
C10.4311(4)0.7878(4)0.21669(17)0.0329(7)
H10.50850.82550.26570.039*
C20.4702(5)0.6782(4)0.17319(19)0.0386(8)
H20.57080.64060.19240.046*
C30.3588(5)0.6258(4)0.10148(19)0.0386(8)
H30.38360.55240.07040.046*
C40.2101(5)0.6809(3)0.07506(17)0.0342(7)
H40.13320.64600.02580.041*
C50.1756(4)0.7882(3)0.12198(15)0.0247(6)
C60.0183(4)0.8536(3)0.10007(15)0.0249(6)
C7−0.1243(4)0.8011(3)0.03327(16)0.0328(7)
H7−0.12640.7186−0.00050.039*
C8−0.2625(5)0.8715(4)0.01733(17)0.0390(8)
H8−0.36060.8370−0.02730.047*
C9−0.2555(4)0.9929(4)0.06738(18)0.0368(8)
H9−0.34651.04420.05720.044*
C10−0.1117(4)1.0373(4)0.13284(16)0.0312(7)
H10−0.10811.11890.16750.037*
C11−0.0533(4)0.7047(4)0.30229(16)0.0310(7)
H11−0.01060.65070.26750.037*
C12−0.1900(4)0.6123(4)0.34668(17)0.0354(7)
H12−0.23960.49770.34200.043*
C13−0.2518(4)0.6906(4)0.39755(18)0.0376(8)
H13−0.34280.63010.42900.045*
C14−0.1799(4)0.8592(4)0.40253(16)0.0333(7)
H14−0.22240.91480.43660.040*
C15−0.0433(4)0.9448(3)0.35601(15)0.0253(6)
C160.0415(4)1.1244(3)0.35665(15)0.0255(6)
C170.0078(4)1.2244(4)0.40789(17)0.0336(7)
H17−0.07421.17860.44450.040*
C180.0948(5)1.3909(4)0.40488(18)0.0399(8)
H180.07351.46020.43950.048*
C190.2132(5)1.4547(4)0.35067(18)0.0383(8)
H190.27421.56810.34740.046*
C200.2405(4)1.3485(3)0.30112(17)0.0332(7)
H200.32141.39240.26390.040*
C210.5778(4)1.2876(3)0.16840(16)0.0284(7)
C220.5139(4)1.1320(4)0.40129(17)0.0294(7)

Source of material

To a solution of Ni(SCN)2⋅4H2O (0.8779 g, 3.555 mmol) in EtOH (30 mL)/ acetone (20 mL) was added 2,2′-bipyridine (bipy; 1.1883 g, 7.608 mmol) and stirred for 1 h at room temperature. The formed precipitate was separated by filtration, washed with EtOH and acetone and dried at 50 °C, to give a violet powder (1.5960 g). Crystals suitable for X-ray diffraction analysis were obtained by slow evaporation from an H2O solution at 60 °C.

Experimental details

Hydrogen atoms were positioned geometrically and allowed to ride on their parent atoms with d(C—H) = 0.94 Å and Uiso(H) = 1.2Ueq(C). The highest peak (0.49 e Å−3) and the deepest hole (−0.58 e Å−3) in the difference Fourier map are located 1.24 Å and 0.03 Å from the atoms N2 and Ni1, respectively.

Discussion

The X-ray crystal structure of the title complex cis-[Ni(NCS)2(bipy)2] was previously reported in the monoclinic space group P21/c [1]. The structure presented herein is essentially the same as the published structure and represents a triclinic polymorph with the space group P1̅. In the complex, the central Ni(II) ion is six-coordinated in a distorted octahedral environment defined by four N atoms derived from two chelating bipy ligands and two mutually cis-positioned N atoms from two SCN anionic ligands. The tight N—Ni—N chelating angles (N1—Ni1—N2 = 78.40(9)° and N3—Ni1—N4 = 78.56(9)°) cause the distortion of the octahedron. The apical N1—Ni1—N4, N2—Ni1—N6 and N3—Ni1—N5 bond angles are 173.63(9)°, 173.8(1)° and 173.4(1)°, respectively. The six Ni—N bond lengths are almost equal (2.061(2)–2.093(2) Å), but the Ni—N bonds trans to the NCS ligand (2.091(2) Å and 2.093(2) Å) are slightly longer than the Ni—N bonds trans to the bipy ligand (2.069(2) Å and 2.069(2) Å), because of the different trans effects of the ligands. The thiocyanato ligands are almost linear, displaying N—C—S bond angles of 179.2(3)° and 178.9(3)°, and the N atoms are bent coordinated to the Ni atom with the Ni—N—C(NCS) bond angles of 171.6(3)° and 135.8(2)°, characteristic of an N-bonded conformation. Both bipy ligands are nearly planar and the dihedral angle between the least-squares planes of the two ligands is 87.15(4)°. The dihedral angle between the pyridyl rings containing N1 and N2 is 6.9(2)°, and N3 and N4 5.5(2)°. In the crystal structure, the complexes are stacked in columns along [100], and display numerous inter- and intramolecular π-π interactions between the pyridyl rings. The centroid-centroid distance between Cg1 (the centroid of ring N2—C10) and Cg1i (symmetry code i: −x, 2−y, −z) is 3.680(2) Å, the ring planes are parallel and shifted by 1.602 Å.

Award Identifier / Grant number: 2009-0094055

Funding statement: This work was supported by Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0094055). The author thanks the KBSI, Seoul Center, for the X-ray data collection.

Acknowledgements

This work was supported by Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0094055). The author thanks the KBSI, Seoul Center, for the X-ray data collection.

References

1 Freire, E.; Baggio, S.; Suescun, L.; Baggio, R.: Comparative X-ray study of three nickel(II)-thiocyanate compounds. Acta Crystallogr. C57 (2001) 905–908.10.1107/S0108270101008460Search in Google Scholar

2 Bruker. APEX2, SAINT and SADABS. Brucker AXS Inc., Madison, Wisconsin, USA, 2009.Search in Google Scholar

3 Sheldrick, G. M.: Crystal structure refinement with SHELXL. Acta Crystallogr. C71 (2015) 3–8.10.1107/S2053229614024218Search in Google Scholar PubMed PubMed Central

4 Farrugia, L. J.: ORTEP-3 for Windows − a version of ORTEP-III with a Graphical User Interface (GUI). J. Appl. Crystallogr. 30 (1997) 565.10.1107/S0021889897003117Search in Google Scholar

5 Spek, A. L.: Single-crystal structure validation with the program PLATON. J. Appl. Crystallogr. 36 (2003) 7–13.10.1107/S0021889802022112Search in Google Scholar

Received: 2016-6-27
Accepted: 2016-10-11
Published Online: 2016-11-1
Published in Print: 2017-1-1

©2016 Kwang Ha, published by De Gruyter.

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

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