In:
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr), Vol. 74, No. 3 ( 2018-06-01), p. 255-263
Abstract:
The interactions between phosphines and boranes in crystal structures have been investigated by analyzing data from the Cambridge Structural Database (CSD). The interactions between phosphines and boranes were classified into three types; two types depend on groups on the boron atom, whereas the third one involves frustrated Lewis pairs (FLPs). The data enabled geometric parameters in structures to be compared with phosphine–borane FLPs with classical Lewis pairs. Most of the crystal structures (78.1%) contain BH 3 as the borane group. In these systems, the boron–phosphorus distance is shorter than systems where the boron atom is surrounded by groups other than hydrogen atoms. The analysis of the CSD data has shown that FLPs have a tendency for the longest boron–phosphorus distance among all phosphine–borane pairs, as well as different other geometrical parameters. The results show that most of the frustrated phosphine–borane pairs found in crystal structures are bridged ones. The minority of non-bridged FLP structures contain, beside phosphorus and boron atoms, other heteroatoms (O, N, S for instance).
Type of Medium:
Online Resource
ISSN:
2052-5206
DOI:
10.1107/S2052520618003736
DOI:
10.1107/S2052520618003736/aw5005sup1.pdf
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2018
detail.hit.zdb_id:
2020841-8
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