Novel Double-Stranded Chains vs Two-Layer Interwoven Sheets. Subtle Coligand Effects and Related Properties for [Co(Py2S)2X2]n (Py2S = 4,4‘-Dipyridyl Sulfide; X = NCS, Cl)

Jung, Ok Sang; Park, Sung Ho; Kim, Dong Chan; Kim, Kwan Mook

doi:10.1021/ic971415x

Cited by 110 publications

(23 citation statements)

References 34 publications

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“…Dipyridyl ligands with the bent C-S-C fragment exhibit diverse coordination geometries in construction various transition metal complexes [6][7][8], and the coordination chemistry of these N-positional isomers has been extensively studied. In the present context, we report a new complex derived from 2-(pyridine-4-ylthio)pyrazine and cadmium(II)nitrate.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of diaqua-dinitrato-κ1O-bis(2-(pyridin-4-ylthio)- pyrazine-κ1N)cadmium(II), C18H18CdN8O8S2

Wang

2015

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialAll organic reagents and solvents purchased from commercial sources were used without further purification. Sodium pyridine-4-thiolate (0.66 g, 5 mmol) dissolved in methanol was added to 10 ml acetonictrile containing 2-chloro-pyrazine (0.58 g, 5 mmol) with stirring at room temperature. After 5 hours, the solvent were removed under vacuum. The products were then separated and purified by column chromatography on silica gel (eluent: dichloromethane/methanol = 95:5, v/v), and the di-[2-(pyridine-4-ylthio)pyrazine] was obtained in 33.1% yield. Di-[2-(pyridine-4-ylthio)pyrazine] (38 mg, 0.2 mmol) and Cd(NO 3 ) 2 ×6H 2 O (345 mg, 0.1 mmol) were dissolved and mixed in acetonitrile, the filtrate of which was then left to stand in air to let the solvent evaporate slowly. The colourless block-shaped crystals of the title compound were deposited, yield 20.1 mg (31% based on di-[2-(pyridine-4-ylthio)pyrazine]). Experimental detailsAll hydrogen atoms were added using riding models. The U iso values of the hydrogen atoms were set to 1.2U eq (C,N). DiscussionPyridyl-based ligands have been widely used to construct different transition complexes with fascinating structures and attractive properties [3][4][5]. Dipyridyl ligands with the bent C-S-C fragment exhibit diverse coordination geometries in construction various transition metal complexes [6][7][8], and the coordination chemistry of these N-positional isomers has been extensively studied. In the present context, we report a new complex derived from 2-(pyridine-4-ylthio)pyrazine and cadmium(II)nitrate. In the asymmetric unit of the title complex, there is one 2-(pyridine-4-ylthio)pyrazine, one water molecule, one nitrate anion and half of a Cd(II) ion. The Cd(II) lies in an inversion center and adopts an N 2 O 2 (H 2 O) 2 octahedral geometry with two 4-pyridyl N locating at the axial positions (Fig.). The Cd1-N1 bond length is 2.249(3) Å, and the Cd1-O1w equals 2.402(3) Å. The C3-S1-C6 angle is 106.85(18)°, comparable to that 104.27(7)°of C-S-C in di-pyrazinyl sulfide [8].

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Section: Discussionmentioning

confidence: 99%

Crystal structure of diaqua-dinitrato-κ1O-bis(2-(pyridin-4-ylthio)- pyrazine-κ1N)cadmium(II), C18H18CdN8O8S2

Wang

2015

Zeitschrift Für Kristallographie - New Crystal Structures

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“…Ligands based on the pyrazinyl group have been widely used in coordination chemistry owing to its linear linkage mode in construction metal complexes with different structures [2][3][4][5].The angular-shaped-S-fragment is widelyu sed as ar igid hinge to construct aseries of heterocyclic-based ligand in alarge number of transition metal complexes [6][7]. We recently reported the synthesisand charaterizationofaseriesofAg(I) complexes with di-2-pyrazinylsulfide [8], al igand with an angular-S-hinge group.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of bis(di(pyrazin-2-yl)sulfane-κN)tetrakis(μ2-acetato-κ2O:O')dicopper(II), C12H12CuN4O4S

Yan

Zhang

Wan

2014

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialAllreagentsand solvents obtained from commercial sources were used without further purification. Di-2-pyrazinylsulfide was synthesized following ap rocedure already reported [1].A tr oom temperature, di-2-pyrazinylsulfide (36 mg, 0.2 mmol) and Cu(CH 3 CO 2 ) 2 ×H 2 O(40 mg, 0.2 mmol) were dissolved in amixture of 3m la cetonitrile and 2m lm ethanol. The mixture was stirred at room temperature for 3hours. After filtration, the clear solution was left to stand in air for one week to give blue irregular crystals of the title compound suitable for X-ray diffraction (yield 19.3 mg, 52% based on ligand). Experimental detailsAll hydrogen atomswere identified in difference Fourier syntheses.The U iso values of the hydrogen atomsofmethyl groups were set to 1.5U eq (C) and the U iso values of all other hydrogen atoms were setto1.2U eq (C, N). DiscussionLigands based on the pyrazinyl group have been widely used in coordination chemistry owing to its linear linkage mode in construction metal complexes with different structures [2][3][4][5].The angular-shaped-S-fragment is widelyu sed as ar igid hinge to construct aseries of heterocyclic-based ligand in alarge number of transition metal complexes [6][7]. We recently reported the synthesisand charaterizationofaseriesofAg(I) complexes with di-2-pyrazinylsulfide [8], al igand with an angular-S-hinge group. Herein, we report the crystal structure of adinuclear Cu(II) complex with di(pyrazin-2-yl)sulfane. X-ray crystallographic analysis reveals that the asymmetric unit of the title complex is composed of one Cu(II), one di(pyrazin-2-yl)sulfane ligand and two acetate anions (Figure). The Cu(II) exhibits aO4N-coordination geometry, with the metal center surrounded by one 4-pyrazinyl Na nd four acetate Oa toms.T wo symmetry-related Cu(II) ions lyingonaninversioncenterexhibit Cu×××Cu weak interaction(Cu×××Cu 2.5914(7) Å) [9]toform adimeric Cu 2 ,which is stabilizedbytwo pairs of syn-h 1 :h 1 :m 2 -bridging acetate. Thus the di(pyrazin-2-yl)sulfane ligand acts as a h 1 -bonding mode and links to the Cu 2 units on both sides, forming amononuclear complex. Herein, the angle C4-S-C7 of 104.48(11)°is comparable to that C-S-C of 103.2(7)°in silver(I) pentafluoropropionate complex with an analogous angular ligand di-2-pyrimidyl sulfide [10].

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“…Different from the double chain structure of [Ag(pytz)(MeCN)]PF 6 [22] and the chains of equispaced loops/rings of [Ag 2 (bix) 3 ](NO 3 ) 2 [20,21] and a-[Co(dpe) 1.5 (NO 3 ) 2 ] [25,26], the infinite chain of 1 features a double-stranded fashion similar to the one-dimensional chain [Co(Py 2 S) 2 (NCS) 2 ] (Py 2 S ¼ 4,4 0 -dipyridyl sulfide) [35]. It is noteworthy that such double helix-like chains are rarely observed in the currently very active field of crystal engineering of solid state coordination polymers.…”

Section: Discussionmentioning

confidence: 99%

“…It is noteworthy that such double helix-like chains are rarely observed in the currently very active field of crystal engineering of solid state coordination polymers. The reason for the different structures between 1 and 2, which have the same empirical formula and very similar octahedral metal centers, is unclear; yet it may be mainly attributed to the metal ions together with the fact that solid state coordination polymers of the flexible V-shaped organic spacers may exhibit drastic topological differences [35]. These observations strongly suggest that the rational design and assembly of solid-state coordination polymers is yet a challenge and that solid state coordination polymers of the flexible organic spacers may exhibit interesting topological diversity.…”

Section: Discussionmentioning

confidence: 99%

Coordination Networks Self-assembled by Transition Metal Salts With 4,4′-oxydianiline (4,4′-oda). Syntheses and Structures of ∞ 1 [Ni(NCS) 2 (4,4′-oda) 2 ], ∞ 2 [Co(NCS) 2 (4,4′-oda) 2 ] and ∞ 2 [M(N 3 )(4,4′-oda) 2 ]NO 3 (M=Cd II or Co II )

Chen

Chen²,

Zhou

et al. 2002

Supramolecular Chemistry

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Four infinite complexes 1 1 [Ni(NCS) 2 (4,4 0 -oda) 2 ], 1 2 [Co(NCS) 2 (4,4 0 -oda) 2 ] and 1 2 [M(N 3 )(4,4 0 -oda) 2 ]NO 3 ½M 5 Cd II ð3Þ or Co II (4)] were obtained by reactions 4,4 0 -oxydianiline (4,4 0 -oda) with Ni(SCN) 2 , Co(SCN) 2 , Cd(N 3 ) 2 and Co(N 3 ) 2 , respectively which have been structurally established by single-crystal X-ray diffraction. Complex 1 contains one-dimensional doublestranded chains comprising 24-membered Ni 2 (4,4 0 -oda) 2 macrocycles, each formed by two 4,4 0 -oda ligands and two octahedral Ni II centers. Complex 2 exhibits twodimensional non-interpenetrating networks consisting of large 48-membered macrocycles each formed by four 4,4 0 -oda ligands and four octahedral Co II centers. The crystal structures of 3 and 4 are isomorphous and both contain one-dimensional double-stranded chains comprising 24-membered M 2 (4,4 0 -oda) 2 macrocycles, which are interlinked by m-1,3-azide groups to generate cationic two-dimensional sheets. These sheets are further connected by hydrogen bonds between the amine groups and nitrate ions to furnish three-dimensional networks. Crystal data: complex 1 crystallizes in the monoclinic space group P2 1 /c with a 5 11.990(4) Å , b 5 9.413(4) Å , c 5 12.827(4) Å , b 5 116.32(2)8, V 5 1297.6(8) Å 3 and Z 5 2; complex 2 crystallizes in the orthorhombic space group Pbca with a 5 9.583(2) Å , b 5 12.738(3) Å , c 5 21.039(4) Å , V 5 2568.2(9) Å 3 and Z 5 4; complex 3 crystallizes in the monoclinic space group C2/c with a 5 23.036(5) Å , b 5 5.920(1) Å , c 5 17.800(4) Å , b 5 92.67(3)8, V 5 2424.8(9) Å 3 and Z 5 4; complex 4 crystallizes in the monoclinic space group C2/c with a 5 22.861(5) Å , b 5 5.812(1) Å , c 5 17.720(4) Å , b 5 93.00(3)8, V 5 2351.2(8) Å 3 and Z 5 4.

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Novel Double-Stranded Chains vs Two-Layer Interwoven Sheets. Subtle Coligand Effects and Related Properties for [Co(Py₂S)₂X₂]_n (Py₂S = 4,4‘-Dipyridyl Sulfide; X = NCS, Cl)

Cited by 110 publications

References 34 publications

Crystal structure of diaqua-dinitrato-κ1O-bis(2-(pyridin-4-ylthio)- pyrazine-κ1N)cadmium(II), C18H18CdN8O8S2

Crystal structure of diaqua-dinitrato-κ1O-bis(2-(pyridin-4-ylthio)- pyrazine-κ1N)cadmium(II), C18H18CdN8O8S2

Crystal structure of bis(di(pyrazin-2-yl)sulfane-κN)tetrakis(μ2-acetato-κ2O:O')dicopper(II), C12H12CuN4O4S

Coordination Networks Self-assembled by Transition Metal Salts With 4,4′-oxydianiline (4,4′-oda). Syntheses and Structures of ∞ 1 [Ni(NCS) 2 (4,4′-oda) 2 ], ∞ 2 [Co(NCS) 2 (4,4′-oda) 2 ] and ∞ 2 [M(N 3 )(4,4′-oda) 2 ]NO 3 (M=Cd II or Co II )

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