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2.2.2-Cryptand. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?) [2.2.2]Cryptand is the organic compound with the formula N (CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2) 3 N. This bicyclic molecule is the most studied member of the cryptand family of chelating agents. [2] It is a white solid.
[2.2.2]Propellane, formally tricyclo[2.2.2.0 1,4]octane is an organic compound, a member of the propellane family. It is a hydrocarbon with formula C 8 H 12 , or C 2 (C 2 H 4 ) 3 . Its molecule has three rings with four carbon atoms each, sharing one C–C bond.
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references. [2.2]Paracyclophane is a cyclophane that is applied in bio- and materials science. It was first synthesized by Brown and Farthing in 1949 by pyrolyzing para -xylene in the gas phase under low pressure.
Under the Whyte notation for the classification of steam locomotives, 2-2-2 represents the wheel arrangement of two leading wheels on one axle, two powered driving wheels on one axle, and two trailing wheels on one axle. The wheel arrangement both provided more stability and enabled a larger firebox than the earlier 0-2-2 and 2-2-0 types.
38,160.87 ha. Machu Picchu is a 15th-century Inca citadel located in the Eastern Cordillera of southern Peru on a 2,430-meter (7,970 ft) mountain ridge. [ 2][ 3] Often referred to as the "Lost City of the Incas", it is the most familiar icon of the Inca Empire. It is located in the Machupicchu District within Urubamba Province [ 4] above the ...
2,2,2-Trichloroethanol is the chemical compound with formula Cl 3 C−CH 2 OH. Its molecule can be described as that of ethanol , with the three hydrogen atoms at position 2 (the methyl group) replaced by chlorine atoms.
2. .._. _ _. 2 ( two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number . Because it forms the basis of a duality, it has religious and spiritual significance in many cultures .
The Dynamic two-phase commit (Dynamic two-phase commitment, D2PC) protocol [2] [6] is a variant of Tree 2PC with no predetermined coordinator. It subsumes several optimizations that have been proposed earlier. Agreement messages (Yes votes) start to propagate from all the leaves, each leaf when completing its tasks on behalf of the transaction ...