scholarly journals Spin triplet ground-state in the copper hexamer compounds A2Cu3O(SO4)3(A=Na,K)

2018 ◽  
Vol 98 (18) ◽  
Author(s):  
A. Furrer ◽  
A. Podlesnyak ◽  
E. Pomjakushina ◽  
V. Pomjakushin
Keyword(s):  
Ground State ◽  
Triplet Ground State ◽  
Spin Triplet

Be2B6 and Be2B7+: two double aromatic inverse sandwich complexes with spin-triplet ground state

2019 ◽  
Vol 43 (40) ◽  
pp. 15979-15982 ◽  
Author(s):  
Ying-Jin Wang ◽  
Chang-Qing Miao ◽  
Jing-Jing Xie ◽  
Ya-Ru Wei ◽  
Guang-Ming Ren
Keyword(s):  
Ground State ◽  
Sandwich Structures ◽  
Sandwich Complexes ◽  
Triplet Ground State ◽  
Spin Triplet ◽  
Ring Motif

Be2B6 and Be2B7+ clusters adopt interesting inverse sandwich structures with double σ/π aromaticity, and the former possesses the smallest monocyclic boron ring motif.

scholarly journals Notizen: Low-temperature Heat Capacity and Paramagnetic Susceptibility Measurements on some Tetragonal Nickel(II) Compounds

1972 ◽  
Vol 27 (10) ◽  
pp. 1532-1534 ◽  
Author(s):  
F. W. Klaaijsen ◽  
J . Reedijk
Keyword(s):  
Heat Capacity ◽  
Ground State ◽  
Paramagnetic Susceptibility ◽  
Zero Field ◽  
Spin Hamiltonian ◽  
Triplet Ground State ◽  
Temperature Heat ◽  
Spin Triplet ◽  
Low Temperature Heat Capacity ◽  
Heat Capacity Measurements

Abstract Zero-field splittings have been determined for the spin triplet ground state of Ni(II) in Ni (pyrazole) 4Cl2 and Ni(pyrazole) 4Br2, by means of heat capacity measurements in the 1-80 K region and by paramagnetic susceptibility measurements in the 2-80 K region. The results of both measurements can be fitted with theory using the spin Hamiltonian H=gßHS+D[Sz2-S(S+1)/3]+E(Sx2-Sy2) with the parameter D equal to 7.2 cm-1 for the chloride and 5.4 cm-1 for the bromide. The value of E appeared to be close to zero for both compounds, indicating nearly axial symmetry. The anisotropic g-values (calculated from the susceptibility) are g⊥ = 2.21 ± 0.03 and g||= 2.14 for the chloride and g⊥ =2.20, g|| =2.12 for the bromide.

scholarly journals A Class of Non-Kekulé Molecules with Low Excitation Energies

2007 ◽  
Vol 62 (11) ◽  
pp. 1433-1436
Author(s):  
Fritz Dietz ◽  
Nedko Drebov ◽  
Nikolai Tyutyulkov
Keyword(s):  
Molecular Orbital ◽  
Ground State ◽  
Excitation Energies ◽  
Triplet Ground State ◽  
Molecular Systems ◽  
Structural Principle

A class of non-Kekulé molecular systems with a new structural principle and low excitation energies or with a triplet ground state was investigated theoretically. The systems consist of a non-Kekulé monoradical, possessing a non-bonding molecular orbital linked in a specific way to another monoradical.

Paramagnetic resonance in the nickel Tutton salts

1952 ◽  
Vol 213 (1115) ◽  
pp. 459-473 ◽  
Keyword(s):  
Electric Field ◽  
Magnetic Anisotropy ◽  
Ground State ◽  
Absorption Lines ◽  
Crystalline Electric Field ◽  
Paramagnetic Resonance ◽  
Triplet Ground State ◽  
Tutton Salts ◽  
Splitting Factor ◽  
Rhombic Symmetry

The paramagnetic resonance spectra of five nickel Tutton salts have been analyzed at 290° K. The positions and intensities of the absorption lines are adequately explained by a crystalline electric field of rhombic symmetry. The triplet ground state is resolved into three singlets with an overall splitting of the order of 3 cm -1 , and the spectroscopic splitting factor g is found to be 2.25 ± 0.05. A comparison is made between the directly measured values of the magnetic anisotropy, and the values calculated using the resonance results.

scholarly journals A stable triplet diradical emitter

2021 ◽  
Author(s):  
Zhongtao Feng ◽  
Yuanyuan Chong ◽  
Shuxuan Tang ◽  
Yong Fang ◽  
Yue Zhao ◽  
...  
Keyword(s):  
Ground State ◽  
Triplet Ground State ◽  
Stable Molecule

Molecules with luminescence have been extensively investigated, but luminescence of a stable molecule with a triplet ground state has not been observed. Synthesis of boron-containing radicals have attracted lots of...

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