Geometrical configuration of monomethyl–platinum(II) complexes driven by the size of entering nitrogen ligands

Carboxylic acid chlorides are useful substrates in organic chemistry. Many germanium analogues of carboxylic acid chloride have been synthesized so far. Nevertheless, all of the reported germathioacid chlorides use bidentate nitrogen ligands and contain germanium-nitrogen bonds. Our group synthesized germathioacid chloride, Ge(S)Cl{C6H3-2,6-Tip2}(Im-i-Pr2Me2), using N-heterocyclic carbene (Im-i-Pr2Me2). As a result of density functional theory (DFT) calculation, it was found that electrons are localized on sulfur, and the germanium-sulfur bond is a single bond with a slight double bond property.

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Geometrical configuration of interstitial oxygen in silicon and in germanium

Solid State Communications ◽

10.1016/0038-1098(94)90740-4 ◽

1994 ◽

Vol 89 (9) ◽

pp. 819-822 ◽

Cited By ~ 11

Author(s):

A. Lizón-Nordström ◽

Félix Yndurain

Keyword(s):

Interstitial Oxygen ◽

Geometrical Configuration

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The Third Bosporus Bridge — the Aerodynamic Stability of the Steel Segments During the Lifting

IABSE Congress, New York, New York 2019: The Evolving Metropolis ◽

10.2749/newyork.2019.2656 ◽

2019 ◽

Author(s):

Vincent de Ville de Goyet ◽

Yves Duchêne

Keyword(s):

Vertical Axis ◽

Longitudinal Axis ◽

The Black Sea ◽

Span Length ◽

Geometrical Configuration ◽

Aerodynamic Stability ◽

The Third ◽

The North ◽

Torsional Instability ◽

Main Cables

<p>The Third Bosporus Bridge is a suspendion bridge with a main span length of 1 408 m and a total length of 2 408 m located at the north of Istanbul near the Black Sea.</p><p>The main span is partially suspended at the pylons by stiffening cables and at the main cables with vertical hangers (Fig.1‐2). The deck is 58.8 m wide. But contrary to a classical arrangement, the transversal distance between the vertical hangers, in the suspended zone, is only 13.50 m. Due to this geometrical configuration of the vertical hangers, it was necessary to verify the risk of aeroelastic instabilities of steel segments of the deck during its lifting: risk of a torsional instability around the longitudinal axis but also around the vertical axis. Countermeasures have been proposed and adopted to suppress these risks.</p>

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Maintenance and Parts Fabrication by Reverse Engineering

Volume 2: 19th Computers and Information in Engineering Conference ◽

10.1115/detc99/cie-9134 ◽

1999 ◽

Author(s):

Sayed M. Metwalli ◽

M. Alaa E. Radwan ◽

Osama Abdel-Wehab ◽

Owaise Shalaby ◽

Youssria A. Moussa ◽

...

Keyword(s):

Reverse Engineering ◽

Spare Parts ◽

Geometrical Configuration ◽

Proof Of Concept ◽

Industrial Plants ◽

Industrial Base ◽

Skilled Manpower ◽

Casting Industry ◽

Major Industry ◽

Re Methods

Abstract With the collapse of the Eastern block, once Egypt’s major industry supplier for machinery and spare parts, and the lack of skilled manpower, the Egyptian industry is finding it difficult to maintain its machinery and industrial base and to compete with the much more sophisticated and coordinated industries abroad. The cutoff of supply of maintenance parts from the Eastern Block, prompt the use of modern reverse engineering (RE) methods in the capturing the geometrical configuration and fabrication of rare maintenance parts, in support of the Egyptian Industry. This paper demonstrates, as a proof of concept, the use of the technology of RE in the fabrication of parts. The success of the experiment initiated a much wider application to the technology, that of patterns making in support of the casting industry. This will provide an accurate and expeditious means to properly maintain industrial plants and produce compatible spare pails urgently needed.

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