Robinson had lined up a 10-day contract agreement with Brooklyn, sources told ESPN.com, but he failed to clear waivers as the Sixers claimed him shortly after 5 p.m. ET. Robinson tweeted Monday his excitement about the likelihood of joining the Nets.
By claiming the 23-year-old forward, the Sixers went from $3.03 million under the salary floor to over it. Robinson makes nearly $3.7 million.
The salary floor requires that all teams spend $56.759 million -- or 90 percent of the salary cap -- on the date of their last regular-season game.
According to ESPN salary cap expert Larry Coon, "Teams with a team salary below the minimum are surcharged for their shortfall, with the money distributed among the players on that team."
In fact, the Nets put a top-three protection on their 2012 first-rounder, which they sent to Portland in exchange for Gerald Wallace.
But the ping pong balls didn't fall their way. The Blazers got the pick -- which fell at No. 6 -- and took Damian Lillard.
Robinson went at No. 5 to Sacramento, and he has failed to live up to his draft status since. But he is still young, so this is a low-risk move for Philadelphia to make.
Robinson is averaging 4.6 points and 4.4 rebounds in 172 career games. To make room for him on their roster, the 76ers have released guard Tim Frazier from his second 10-day contract.
Information from ESPN.com's Marc Stein contributed to this report.