0000000001299113
AUTHOR
Jacob Overgaard
Magnetism and variable temperature and pressure crystal structures of a linear oligonuclear cobalt bis-semiquinonate
The crystal structure of the first oligomeric cobalt dioxolene complex, Co3(3,5-DBSQ)2((t)BuCOO)4(NEt3)2, 1, where DBSQ is 3,5-di-tert-butyl-semiquinonate, has been studied at various temperatures between 20 and 200 K. Despite cobalt-dioxolene complexes being generally known for their extensive ability to exhibit valence tautomerism (VT), we show here that the molecular geometry of compound 1 is essentially unchanged over the full temperature range, indicating the complete absence of electron transfer between ligand and metal. Magnetic susceptibility measurements clearly support the lack of VT between 8 and 300 K. The crystal structure is also determined at elevated pressures in the range f…
Structural and magnetic investigations of the mixed-valence Fe(II,III) two-dimensional layer complex, [Fe2(II) Fe2(III)(HCOO)10(C6H7N)6]n.
The structure of the complex, [Fe2(II)Fe2(III)(HCOO)10(C6H7N6)n, (1) exhibits a neutral two-dimensional layer network of alternating iron(II) and iron(III) ions, bridged equatorially by formate groups. All iron atoms are octahedrally coordinated, with iron(III) coordinating axially to one gamma-picoline and one formate group, while the iron(II) centers interact axially with two gamma-picoline groups, above and below the layer plane. The complex crystallizes in the triclinic space group P1 at all studied temperatures [at 120 K, the cell dimensions are: a = 10.228(1), b = 12.071(1), c = 12.072(1) A, alpha = 89.801(2), beta = 71.149(2), gamma = 73.371(2) degrees]. An intralayer antiferromagnet…
Studies of a molecular hourglass: synthesis and magnetic characterisation of a cyclic dodecanuclear {Cr10Cu2} complex.
The synthesis, structure, EPR, and magnetic studies of two dodecanuclear heterometallic cyclic clusters are reported. The compounds have the general formula [R(2)NH(2)](2)[Cr(10)Cu(2)F(14)(O(2)CCMe(3))(22)] (R=Me, 1 or iPr, 2). Both structures contain an array of metal centers which describe an approximate "hourglass", with an ammonium cation in the center of each half of the figure. The chromium sites are all six-coordinate, with the two copper sites five-coordinate. The majority of metal-metal edges are bridged by a single fluoride and two pivalate ligands, while two Cr--Cu edges are bridged by a single fluoride and a single pivalate. Magnetic studies show that 1 and 2 exhibit similar (bu…
A family of heterometallic wheels containing potentially fourteen hundred siblings
The synthesis and structure of new heterometallic wheels are reported, with preliminary studies of selected compounds.
Does the thermal evolution of molecular structures critically affect the magnetic anisotropy?
A dysprosium based single-ion magnet is synthesized and characterized by the angular dependence of the single-crystal magnetic susceptibility. Ab initio and effective electrostatic analyses are performed using the molecular structures determined from single crystal X-ray diffraction at 20 K, 100 K and 300 K. Contrary to the common assumption, the results reveal that the structural thermal effects that may affect the energy level scheme and magnetic anisotropy below 100 K are negligible.
CCDC 1045633: Experimental Crystal Structure Determination
Related Article: Kang Qian, José J. Baldoví, Shang-Da Jiang, Alejandro Gaita-Ariño, Yi-Quan Zhang, Jacob Overgaard, Bing-Wu Wang, Eugenio Coronado, Song Gao|2015|Chemical Science|6|4587|doi:10.1039/C5SC01245G
CCDC 1481090: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481097: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481096: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481098: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1488918: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481092: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481094: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1045632: Experimental Crystal Structure Determination
Related Article: Kang Qian, José J. Baldoví, Shang-Da Jiang, Alejandro Gaita-Ariño, Yi-Quan Zhang, Jacob Overgaard, Bing-Wu Wang, Eugenio Coronado, Song Gao|2015|Chemical Science|6|4587|doi:10.1039/C5SC01245G
CCDC 1045631: Experimental Crystal Structure Determination
Related Article: Kang Qian, José J. Baldoví, Shang-Da Jiang, Alejandro Gaita-Ariño, Yi-Quan Zhang, Jacob Overgaard, Bing-Wu Wang, Eugenio Coronado, Song Gao|2015|Chemical Science|6|4587|doi:10.1039/C5SC01245G
CCDC 1481084: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481089: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481088: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481086: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481085: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481093: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481095: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481083: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481087: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K
CCDC 1481091: Experimental Crystal Structure Determination
Related Article: Jacob Overgaard, Louise H. Møller, Mette A. Borup, Maxime Tricoire, James P. S. Walsh, Marcel Diehl, Eva Rentschler|2016|Dalton Trans.|45|12924|doi:10.1039/C6DT02024K