The embattled New York Times Co. is talking to Mexican billionaire Carlos Slim about making a sizable cash investment in the company. In September, Slim bought a 6.4% stake in the Times Co., owner of The New York Times and several other papers, for about $118 million. Now he is interested in gaining a larger share of the company. The 68-year-old telecommunications tycoon is discussing a large purchase of preferred shares. These shares would carry no voting rights, but pay a dividend. The move can be nixed by the Sulzberger family, including publisher Arthur Sulzberger.