The phrase "particularly pivotal" is correct and usable in written English.
You can use it to emphasize the importance of something. For example: The decision made by the jury was particularly pivotal, as it determined the outcome of the case.
Macomb, once a stronghold of Reagan Democrats, was particularly pivotal.
By good fortune, Luhrmann happened to choose a particularly pivotal moment in the history of psychiatry.
It disappeared when the at-bat reached three balls or two strikes, a particularly pivotal state.
King Abdullah II of Jordan seems to have played a particularly pivotal role.
His houses are now cherished in the same way as Frank Lloyd Wright's -- as testaments to a uniquely original vision and a particularly pivotal moment in design history.
American officials had also been in close contact with Vice President Suleiman, who may be playing a particularly pivotal role in managing the transition of power.
There has long been concern about angry reaction in Afghanistan to the screen adaptation of the novel, particularly a pivotal scene in which a boy is raped.
These must address the fact that the conditions - and particularly the pivotal public interest criteria - are jeopardised by the law's structure.
The novel implicitly agrees with them: it shows the sisters only on their halting journeys to Hammarso, with long detours into their respective pasts in that bewitched place, particularly the pivotal summer of 1979, when sex, death and betrayal became inextricably intermingled.
The transcription factor NF- κB in particularly is pivotal in the regulation of inflammation.
Copper is an essential trace element to life and particularly plays a pivotal role in the physiology of aerobic organisms.
