Bis(catecholato)germane, [Ge(C6H4O2)2(H2O)2] (1) was synthesized by the reaction of catechol and germanium oxide in water according to a reported method. Complex 1 was characterized by FT-IR spectroscopy, NMR spectroscopy and...
This paper attempts to highlight the effect of change in load and irradiance on Photovoltaic integrated Power system network. The Power system network considered here is IEEE 14 bus system. The simulation is done on MATLAB platform and variation of Voltage, Power and Total Harmonic Distortion (THD) has been studied. The results indicates that how power quality of the power system is affected by the irradiance on Photovoltaic cell. The study is performed considering the other environmental factors such as wind velocity, ambient temperature and humidity have a negligible effect on the photovoltaic module. In a steady-state controlled environment, the simulation results show that the output voltage, current and its power decrease with time as the irradiance on the photovoltaic panel decreases.
Two tetranuclear Ni(II) complexes: [Ni 4 (HL 1 ) 4 ] • H 2 O (1) and [Ni 4 (HL 2 ) 4 ] • 1.5 dmf (2) where dmf = dimethylformamide, Hhave been prepared and characterized by single crystal X-Ray diffraction, elemental analysis and FT-IR spectroscopy. The solid-state structures reveal the formation of highly symmetric and asymmetric [Ni 4 O 4 ] cubane cores in complexes 1 and 2, respectively. Extensive magnetic studies show that both complexes present ferromagnetic exchange interactions between the Ni(II) ions within the cubane core with g = 2.113(3), J 1 = À 7.89(8) cm À 1 , J 2 = 13.3(1) cm À 1 and j D j = 11.3(4) cm À 1 (for 1) and g = 2.206(4), J 1 = 1.0(1) cm À 1 , J 2 = 7.8(1) cm À 1 and j D j = 8.7(2) cm À 1 (for 2). The large anisotropy, high ground spin state (arising from the ferromagnetic coupling) and the good isolation of the clusters provided by the Schiff base ligands, give rise to the first examples of field-induced single-molecule magnets (FIÀ SMM) in Ni 4 O 4 clusters and to the highest energy barrier reported to date in a Ni 4 O 4 cluster.
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