Many companies donated funds to support reconstruction in the disaster area.
Tips
usage
捐资 is more formal than 捐钱 and is typical in news and official writing. It strongly collocates with 助学 (aid education), 兴学 (build schools), and 救灾 (disaster relief) - e.g. 捐资助学 'donate funds for education'.
mistakes
捐资 takes either an amount (捐资一百万) or a purpose clause (捐资助学), but not a person as direct object. Use 捐给 + person/org for that: 他捐给学校一百万.
