The phrase "acted as mediators between" is correct and usable in written English.
It can be used when describing a role where someone facilitates communication or negotiation between two or more parties.
Example: "The diplomats acted as mediators between the conflicting nations to reach a peaceful resolution."
Alternatives: "served as intermediaries between" or "functioned as go-betweens for".
At best these unions acted as mediators between management and workers rather than as champions of workers' interests.
Whereas priests had once acted as mediators between God and men through sacramental rites, Reformed theology declared the priesthood of all believers.
But since the war began, they have also acted as mediators between the viewer and the journalists posted with the troops who have become the voices of their units, sharing and expressing the soldiers' thirst, fatigue and danger.
Then there was Colonel Qaddafi's second wife, Safiya Farqash, who was born in Bayda and whose family, from the city's largest tribe, Birasa, acted as mediators between the city and the colonel himself.
In England, Lord Chancellors acted as mediators between rulers and subjects.
Those key persons acted as mediators between investigators and immigrants in order to increase feelings of trust and comfortability.
In many cases Irenaeus acted as mediator between various contending factions.
To this end he acted as mediator between Louis XII of France and Pope Julius II, who were at war in northern Italy.
Internationally, he acted as mediator between Libya and the United Kingdom in the Pan Am Flight 103 bombing trial, and oversaw military intervention in Lesotho.
Thus situational awareness acted as mediator between team climate and integrated care delivery among professionals delivering care to older hospitalized patients.
The same procedure was followed to determine if unmet needs acted as mediator between social networks and self-rated quality of life.
