A novel zero-dimensional dinuclear zinc complex, di-μ-acetato-1:2κ4
O:O′-(μ-2-acetyl-6-{[(Z)-2-bromo-3-oxoprop-1-en-1-yl]azanidyl}phenolato-1κ2
O
1,O
2:2κ3
O
1,N,O
6)(N,N-dimethylacetamide-1κO)dizinc(II), [Zn2(C11H8BrNO3)(CH3COO)2(C4H9NO)] or [Zn2(L)(CH3COO)2(DMA)], 1, was synthesized using (Z)-3-[(3-acetyl-2-hydroxyphenyl)amino]-2-bromoprop-2-enal (H2
L), which was synthesized from 1-(3-amino-2-hydroxyphenyl)ethanone and 2-bromomalonaldehyde. H2
L and 1 were characterized by single-crystal X-ray diffraction, FT–IR spectroscopy and elemental analysis. Theoretical calculations of the bond orders and excited state of H2
L confirmed that there is extensive electron delocalization in the H2
L molecules. Single-crystal X-ray diffraction shows that the two Zn atoms are pentacoordinated in distorted trigonal bipyramidal configurations in the crystals of 1. The thermogravimetric analysis of 1 shows that the main frame of the complex remains stable to about 190 °C. Powder X-ray diffraction (PXRD) analysis shows that 1 possesses high purity and acid and alkali resistance. The intermolecular interactions of H2
L and 1 were analyzed using Hirshfeld surface analysis and the results indicate that the H...H and O...H interactions of H2
L and 1 play a considerable role in stabilizing the self-assembly process.
Based on the core of knowledge acquisition for acquiring or providing knowledge services, remote collaborative product design system provides a virtual enterprise collaborative design patterns. The paper analyzes the open design system for the remote collaborative design, and studies the decision-making flow and its strategy for the distributed collaborative complexity product design. Take multi-degree of freedom manipulator systems design as object, the management and its implementation process methods of the remote collaborative design system for the complex product collaborative design is discussed.
A vehicle Cruise Control System(CCS) was designed based on Finite State Machine(FSM) theory and variable universe fuzzy logical theory. The system can control throttle angle and brake pressure coordinately by modeling vehicle powertrain. The simulation results show that vehicle under the proposed system controlled can be drived along the state switch curve, so as to make the vehicle follow the desired acceleration command accurately. And this control system provides satisfactory tracking performances and suitability insinuations such as traction, vehicle tracking and braking.
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