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Title
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Research On Problems Of Restricted Rotation Relevant To Inorganic Polymers
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Date
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1963
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Index Abstract
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Not Available
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Photo Quality
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Not Needed
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Report Number
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ASD TDR 62-942 Part 2
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Creator
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Lappert, Michael F.
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Corporate Author
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Manchester University
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Laboratory
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Air Force Materials Laboratory
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Extent
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48
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Identifier
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AD0426854
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Access Rights
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OTS
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Distribution Classification
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1
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Contract
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AF 61()52)-441
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DoD Project
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7340
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DoD Task
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734004
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DTIC Record Exists
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No
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Distribution Change Authority Correspondence
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None
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Distribution Conflict
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No
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Abstract
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Evidence from nuclear magnetic resonance (N.M.R.) studies for pi-bonding between B and N in the borazens is presented. That a similar situation might exist between P (III) and N in open chain compounds was indicated by IR studies. The energy barrier to rotation about the BN bond in dimeth ylaminophenylchloroborane was calculated, from observations upon three different parameters characterizing the shape of the N.M.R. signal, as 14 = 0.8 kcal/mole. The barrier in the cor responding bromo-compound was evaluated by analogous methods. The N.M.R. spectrum of the recently reported compound, 1,3-di-t-butyl-2,4 di-t-butylamino-1,3-diaza-2,4-boretane clearly demonstrated that the compound has more than one steric configuration presumably due to exocyclic pi-bonding.
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Report Availability
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Full text available
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Date Issued
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1963-11
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Provenance
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Agricultural Research Service Southern Region Research Center
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Bombardier/Aero
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Type
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report
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Format
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1 online resource
ASDTDR62-942part02.pdf