Catalysis

Discrete mathematics

Phosphine

Vertex (graph theory)

Carborane

Nuclear magnetic resonance spectroscopy

Computer science

Stereochemistry

Medicinal chemistry

Organic chemistry

Graph

Cluster (spacecraft)

Mathematics

Substituent

Combinatorics

Crystallography

Chemistry

Programming language

Chemical Communications

A phosphine containing a 10-vertex carborane anion substituent and its subsequent ligation to a Rh(I) carbonyl complex is reported. The complex is characterized by NMR spectroscopy and a single crystal X-ray diffraction study. In addition, the inductive effects of both 10 and 12 vertex C-functionalized closo-carborane anions are elucidated via I.R. analysis of the CO stretching frequencies of two Rh carbonyl complexes. Unlike C-functionalized neutral o-carborane the 10 and 12-vertex carborane anions are both strong electron donor substituents.

Inductive effects of 10 and 12-vertex closo-carborane anions: cluster size and charge make a difference