Molecular wheel type structure

This reaction followed the highly fascinating molecular wheel type structure exhibited (260) by [Fe(OMe)2(OOC,CH2Cl)] 0, which was crystallized... 

At the time of discovery and publication, the M0154 Giant-Wheel-type cluster represented the largest cluster to be structurally characterized by single crystal X-ray diffraction. In itself, the synthesis of this giant cluster generated enormous interest, even in the popular scientific media. This is because the cluster is of nanoscopic dimensions, and as such, demonstrates potential to bridge the gap between the molecular world, characterized by small molecules or ions, and a world of macroscopic bulk compounds. 

Some systems support various structure formats and need to convert the structures from one format to another from time to time. Although this may not be required by a registration system, it could be very useful in other types of chemical information systems such as molecular modeling. The good news is that some tools from the major chemical informatics software vendors can do the conversions. In this situation, commercial solutions make sense because you do not want to reinvent the wheel. 

Products intermediate to the flexible and rigid foams may be obtained from castor oil (a trihydroxyl molecule), synthetic triols of moderate molecular weight and polyesters with a moderate amount of trifunctional hydroxyl compound in the structure. Current practice, however, is to use tipped polyols of the type used for flexible foams with MDI. Semi-rigid foams are used for such purposes as crash pads, car steering wheels and packaging equipment. 

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