The title compound I （C22H24MnN10S2, Mr = 547.57） has been synthesized and structurally characterized by single-crystal X-ray diffraction. The compound crystallizes in the monoclinic system, space group P2 1/c with ...The title compound I （C22H24MnN10S2, Mr = 547.57） has been synthesized and structurally characterized by single-crystal X-ray diffraction. The compound crystallizes in the monoclinic system, space group P2 1/c with a = 8.6010（17）, b = 9.0180（18）, c = 17.773（4）A, β = 101.79（3）°, V = 1349.5（5）A^3, Z = 2, Dc = 1.348 g/cm^3,/1 = 0.674 mm^-1, F（000） = 566, the final R = 0.0488 and wR = 0.1289. In the structure, each Mn atom is coordinated by four Vim （Vim = 1-vinylimidazole） ligands and a pair of monodentate isothioeyanic groups, affording a compressed oetahedral MnN6 core.展开更多
A practical synthetic method for 4-thiocyanato-1H-pyrazoles through the electrochemical cascade reaction of hydrazines, 1,3-diones and NH4SCN under metal-, chemical oxidant-and external electrolyte-free conditions was...A practical synthetic method for 4-thiocyanato-1H-pyrazoles through the electrochemical cascade reaction of hydrazines, 1,3-diones and NH4SCN under metal-, chemical oxidant-and external electrolyte-free conditions was established. Importantly, both a gram-scale synthesis of 4-thiocyanato-1H-pyrazoles and five one-pot sequential transformations starting from hydrazine were successfully accomplished.展开更多
In this study, we present a facile method to prepare thiocyanato-functionalized porous silica nanospheres. Thiocyanato functionalized silica shells were coated on positively charged cetyltrimethylammonium bromide （C...In this study, we present a facile method to prepare thiocyanato-functionalized porous silica nanospheres. Thiocyanato functionalized silica shells were coated on positively charged cetyltrimethylammonium bromide （CTAB） micelles via hydrolysis and condensation of （3-thiocyanatopropyl）triethoxysilane （TCPTES）, the CTAB cores were removed subsequently to form thiocyanato-functionalized porous sil- ica nanospheres. We demonstrate that the contents of the thiocyanato groups within the functionalized porous silica nanosphere frameworks gradually diminished as a function ofhydrothermal treatment time at 100~C until complete removal, confirmed by TGA and FTIR spectra. The data indicate that extended operation at relatively elevated temperatures may lead to the decomposition of the thiocyanato functional groups. In addition, at a lower CTAB concentration （0.0009 M）, non-porous thiocyanato functionalized sil- ica nanospheres were formed. However, increasing the CrAB concentration to 0.01 M resulted in porous nanospheres inferring that a CTAB concentration threshold is needed to form thiocyanato-functionalized porous silica nanospheres.展开更多
A new one-dimensional compound [Cd(dafo)(SCN)2]n (dafo=4,5-diazafluoren-9-one) has been synthesized and characterized by single crystal X-ray diffraction. It crystallizes in the orthorhombic system; space group Pbca w...A new one-dimensional compound [Cd(dafo)(SCN)2]n (dafo=4,5-diazafluoren-9-one) has been synthesized and characterized by single crystal X-ray diffraction. It crystallizes in the orthorhombic system; space group Pbca with a=1.708 6(5), b=1.303 6(4), c=2.592 6(8) nm, V=5.775(3) nm3, and Z=16. The crystal structure revealed that the structure of [Cd(dafo)(SCN)2]n features μ-1,3-thiocyante bridges and 1D chains. It consists of octahedrally coordinated Cd atoms. Both Cd(1) and Cd(2) are surrounded by two nitrogen atoms from dafo, two S atoms and two N atoms from two di-μ-1,3 thiocyanato bridges. CCDC: 251185.展开更多
A complex [Mn(NCS)2(Eim)4](where Eim=1-ethylimidazole)has been synthesized and structurally cha-racterized by X-ray diffraction single-crystal structure analysis.The compound crystallizes in the Orthorhombic space gro...A complex [Mn(NCS)2(Eim)4](where Eim=1-ethylimidazole)has been synthesized and structurally cha-racterized by X-ray diffraction single-crystal structure analysis.The compound crystallizes in the Orthorhombic space group Pbca with the cell parameters:a=1.618 9(3)nm,b=1.787 4(4)nm,c=1.999 4(4)nm,and V=5.786(2)nm3,Z=8.In the structure,each Mn atom is coordinated by four Eim ligands and a pair of monodentate isothiocyanic groups,affording a compressed octahedral MnN6 core.The NCS-anions are trans and four N atoms from the Eim ligands define the equatorial plane.The C-H…π supramolecular interactions between C-H and imidazole rings of Eim link the molecules into independent chains running along the c-axis.The thermal gravity(TG)data indicates that thermal decomposition of the title complex takes place in two steps,the residue is Fe.CCDC:646113.展开更多
A complex [Cd(NCS)2(Vim)4] (where Vim=1-vinylimidazole) was synthesized and it's crystal structure was determined by X-ray diffraction technique. The compound crystallizes in the Monoclinic space group P21/c with ...A complex [Cd(NCS)2(Vim)4] (where Vim=1-vinylimidazole) was synthesized and it's crystal structure was determined by X-ray diffraction technique. The compound crystallizes in the Monoclinic space group P21/c with the parameters: a=0.858 50(17) nm, b=0.909 90(18) nm, c=1.782 3(4) nm, β=100.14(3)°, V=1.370 5(5) nm3, Z=2. In the structure, each Cd atom is coordinated by four 1-vinylimidazole ligands and a pair of monodentate isothiocyanic groups, affording a compressed octahedral CdN6 core. The NCS-anions are trans and four N atoms from the 1-vinylimidazole ligands define the equatorial plane. From the cyclic voltammogram measurement in H2O, we know that the electrode reaction was展开更多
基金the National Natural Science Foundation of China (20601015)Natural science Foundation of Shandong Province (Y2006B12)
文摘The title compound I （C22H24MnN10S2, Mr = 547.57） has been synthesized and structurally characterized by single-crystal X-ray diffraction. The compound crystallizes in the monoclinic system, space group P2 1/c with a = 8.6010（17）, b = 9.0180（18）, c = 17.773（4）A, β = 101.79（3）°, V = 1349.5（5）A^3, Z = 2, Dc = 1.348 g/cm^3,/1 = 0.674 mm^-1, F（000） = 566, the final R = 0.0488 and wR = 0.1289. In the structure, each Mn atom is coordinated by four Vim （Vim = 1-vinylimidazole） ligands and a pair of monodentate isothioeyanic groups, affording a compressed oetahedral MnN6 core.
基金financial support from the National Natural Science Foundation of China (No. 21902014)Hunan Provincial Natural Science Foundation of China (No. 2021JJ40429)。
文摘A practical synthetic method for 4-thiocyanato-1H-pyrazoles through the electrochemical cascade reaction of hydrazines, 1,3-diones and NH4SCN under metal-, chemical oxidant-and external electrolyte-free conditions was established. Importantly, both a gram-scale synthesis of 4-thiocyanato-1H-pyrazoles and five one-pot sequential transformations starting from hydrazine were successfully accomplished.
文摘In this study, we present a facile method to prepare thiocyanato-functionalized porous silica nanospheres. Thiocyanato functionalized silica shells were coated on positively charged cetyltrimethylammonium bromide （CTAB） micelles via hydrolysis and condensation of （3-thiocyanatopropyl）triethoxysilane （TCPTES）, the CTAB cores were removed subsequently to form thiocyanato-functionalized porous sil- ica nanospheres. We demonstrate that the contents of the thiocyanato groups within the functionalized porous silica nanosphere frameworks gradually diminished as a function ofhydrothermal treatment time at 100~C until complete removal, confirmed by TGA and FTIR spectra. The data indicate that extended operation at relatively elevated temperatures may lead to the decomposition of the thiocyanato functional groups. In addition, at a lower CTAB concentration （0.0009 M）, non-porous thiocyanato functionalized sil- ica nanospheres were formed. However, increasing the CrAB concentration to 0.01 M resulted in porous nanospheres inferring that a CTAB concentration threshold is needed to form thiocyanato-functionalized porous silica nanospheres.
文摘A new one-dimensional compound [Cd(dafo)(SCN)2]n (dafo=4,5-diazafluoren-9-one) has been synthesized and characterized by single crystal X-ray diffraction. It crystallizes in the orthorhombic system; space group Pbca with a=1.708 6(5), b=1.303 6(4), c=2.592 6(8) nm, V=5.775(3) nm3, and Z=16. The crystal structure revealed that the structure of [Cd(dafo)(SCN)2]n features μ-1,3-thiocyante bridges and 1D chains. It consists of octahedrally coordinated Cd atoms. Both Cd(1) and Cd(2) are surrounded by two nitrogen atoms from dafo, two S atoms and two N atoms from two di-μ-1,3 thiocyanato bridges. CCDC: 251185.
文摘A complex [Mn(NCS)2(Eim)4](where Eim=1-ethylimidazole)has been synthesized and structurally cha-racterized by X-ray diffraction single-crystal structure analysis.The compound crystallizes in the Orthorhombic space group Pbca with the cell parameters:a=1.618 9(3)nm,b=1.787 4(4)nm,c=1.999 4(4)nm,and V=5.786(2)nm3,Z=8.In the structure,each Mn atom is coordinated by four Eim ligands and a pair of monodentate isothiocyanic groups,affording a compressed octahedral MnN6 core.The NCS-anions are trans and four N atoms from the Eim ligands define the equatorial plane.The C-H…π supramolecular interactions between C-H and imidazole rings of Eim link the molecules into independent chains running along the c-axis.The thermal gravity(TG)data indicates that thermal decomposition of the title complex takes place in two steps,the residue is Fe.CCDC:646113.
文摘A complex [Cd(NCS)2(Vim)4] (where Vim=1-vinylimidazole) was synthesized and it's crystal structure was determined by X-ray diffraction technique. The compound crystallizes in the Monoclinic space group P21/c with the parameters: a=0.858 50(17) nm, b=0.909 90(18) nm, c=1.782 3(4) nm, β=100.14(3)°, V=1.370 5(5) nm3, Z=2. In the structure, each Cd atom is coordinated by four 1-vinylimidazole ligands and a pair of monodentate isothiocyanic groups, affording a compressed octahedral CdN6 core. The NCS-anions are trans and four N atoms from the 1-vinylimidazole ligands define the equatorial plane. From the cyclic voltammogram measurement in H2O, we know that the electrode reaction was
