Designing bis(phosphaalkenyl)germylenes and their tungsten complexes - A theoretical study

► The s-t gaps for germylenes of the type Ge(CR2 = PR1)2 were calculated. ► An electropositive group such as SiMe3 on the carbon atom decreases the s-t gap. ► Different coordinations of the germylenes to W complexes were evaluated. ► Coordination through the Ge atom is preferred.